CN110140501B - Late rice potash fertilizer usage amount recommendation method and device - Google Patents
Late rice potash fertilizer usage amount recommendation method and device Download PDFInfo
- Publication number
- CN110140501B CN110140501B CN201910461235.3A CN201910461235A CN110140501B CN 110140501 B CN110140501 B CN 110140501B CN 201910461235 A CN201910461235 A CN 201910461235A CN 110140501 B CN110140501 B CN 110140501B
- Authority
- CN
- China
- Prior art keywords
- potassium
- target
- amount
- yield
- target plot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 196
- 235000009566 rice Nutrition 0.000 title claims abstract description 196
- 239000003337 fertilizer Substances 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 59
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 title claims description 58
- 229940072033 potash Drugs 0.000 title claims description 58
- 235000015320 potassium carbonate Nutrition 0.000 title claims description 58
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 title claims description 58
- 240000007594 Oryza sativa Species 0.000 title 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 421
- 239000011591 potassium Substances 0.000 claims abstract description 420
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 420
- 241000209094 Oryza Species 0.000 claims abstract description 196
- 239000010902 straw Substances 0.000 claims abstract description 95
- 235000013339 cereals Nutrition 0.000 claims abstract description 64
- 238000006243 chemical reaction Methods 0.000 claims abstract description 59
- 239000002689 soil Substances 0.000 claims abstract description 59
- 238000010521 absorption reaction Methods 0.000 claims abstract description 47
- 230000004044 response Effects 0.000 claims description 27
- 238000003306 harvesting Methods 0.000 claims description 26
- 238000011282 treatment Methods 0.000 claims description 24
- 238000004891 communication Methods 0.000 claims description 11
- 230000004720 fertilization Effects 0.000 claims description 10
- 238000011084 recovery Methods 0.000 claims description 6
- 230000001932 seasonal effect Effects 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- 239000003895 organic fertilizer Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 34
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 22
- 230000035558 fertility Effects 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 230000008901 benefit Effects 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 235000016709 nutrition Nutrition 0.000 description 3
- 230000035764 nutrition Effects 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000003967 crop rotation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000009355 double cropping Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009336 multiple cropping Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 229940070017 potassium supplement Drugs 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 238000009356 triple cropping Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/007—Determining fertilization requirements
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/02—Agriculture; Fishing; Forestry; Mining
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Strategic Management (AREA)
- Human Resources & Organizations (AREA)
- Economics (AREA)
- General Business, Economics & Management (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Tourism & Hospitality (AREA)
- Marketing (AREA)
- Mining & Mineral Resources (AREA)
- Agronomy & Crop Science (AREA)
- Animal Husbandry (AREA)
- General Health & Medical Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Health & Medical Sciences (AREA)
- Primary Health Care (AREA)
- Development Economics (AREA)
- Game Theory and Decision Science (AREA)
- Entrepreneurship & Innovation (AREA)
- Operations Research (AREA)
- Quality & Reliability (AREA)
- Fertilizers (AREA)
Abstract
The embodiment of the invention provides a method and a device for recommending the use amount of a potassium fertilizer of late rice. And obtaining the potassium content required by the yield reaction according to the yield reaction of applying the potassium fertilizer to the target land and the absorption of potassium in the rice of the late rice per ton. And acquiring the returning amount of potassium removed by the target plot grains and the returning amount of potassium removed by the straws. And obtaining the residual effect of the potassium fertilizer in the previous season of the target land. And predicting the potassium fertilizer consumption required by the target plot late rice in the current season according to the potassium demand corresponding to the yield reaction, the potassium return amount removed by the target plot seeds, the potassium return amount removed by the target plot straws and the residual effect of the last season potassium. The embodiment of the invention comprehensively considers the amount of potassium needed by the yield reaction of the late rice, returning seeds, removing the potassium amount by straws and the potassium fertilizer residue in the last season, and adjusts by referring to the potassium balance condition of soil, thereby promoting the virtuous cycle and utilization of potassium and ensuring the high yield and high efficiency of the late rice production.
Description
Technical Field
The invention relates to the field of agricultural resource environments, in particular to a method and a device for recommending the use amount of a late rice potash fertilizer.
Background
Rice is one of the most important grain crops in China, and can be divided into one-season rice, middle rice, early rice and late rice according to planting seasons and crop rotation systems. Wherein the early rice-late rice rotation is a main crop planting system in south China and middle and lower reaches of Yangtze river, and has high multiple cropping index, and double cropping or triple cropping in one year. The growth period of late rice is generally from the beginning of july at the end of June to the beginning of November at the end of November. The potassium has important significance for the growth and development of rice, can promote photosynthesis and enhance the stress resistance of the rice. However, the research on potassium nutrition of rice is late, and the equal high recognition with nitrogen nutrition cannot be achieved. And because the potassium fertilizer is deficient in Chinese resources and highly depends on import, the price of the potassium fertilizer is high, and the enthusiasm of farmers for applying potassium is influenced.
In view of the fact that the straw burning is strictly prohibited nationwide, the ratio of straw returning to fields in the late rice field is gradually increasing. More than 80% of potassium contained in rice plants is distributed in rice straws, and how to efficiently utilize the potassium becomes a hotspot of current research. Researchers at home and abroad have carried out a great deal of research aiming at the reasonable amount and the application method of the potassium fertilizer for rice, and also put forward a plurality of recommended fertilization methods, such as soil testing recommended fertilization, leaf nutrition diagnosis, fertilizer effect functions and the like, so as to lay a solid foundation for the efficient utilization of the potassium fertilizer. However, if the whole amount of the straws are returned to the field or part of the straws are returned to the field, the potassium element brought into the soil by the part of the straws is ignored, and the deviation of the recommended use amount of the potassium fertilizer is caused. However, the substitution effect and proportion of the straw potassium to the potassium fertilizer are not reached to a unified recognition and recognized method.
Therefore, in consideration of the potassium supplement effect of returning to the field, when the potassium fertilizer is recommended for late rice production in China, a recommendation method which gives consideration to both potassium fertilizer optimized fertilization and straw returning is urgently needed.
Disclosure of Invention
The embodiment of the invention provides a method and a device for recommending the use amount of a potash fertilizer for late rice, which are used for solving the defect that the recommended use amount of the potash fertilizer is deviated when potassium brought into soil by straws is ignored in the conventional method for recommending the potash fertilizer.
In a first aspect, an embodiment of the present invention provides a method for recommending late rice potassium fertilizer usage, including:
s1, collecting basic information of the target plot; wherein the basic information at least comprises the average yield of the rice of the target plot over the years, the yield response of the target plot, the potassium absorption of the late rice of the target plot per ton of grain and the potassium harvest index;
the basic information of the target plot also comprises the pre-straw returning proportion of the current late rice, the yield of crops in the previous season, the input amount of potassium in the previous season and the straw returning proportion in the previous season.
S2, obtaining the target yield of the late rice in the target plot according to the average yield of the rice in the target plot over the years;
s3, obtaining the potassium content required by the yield reaction according to the yield reaction of the potassium fertilizer applied to the target plot and the absorption of potassium of the rice per ton;
s4, acquiring the returning amount of potassium removed by the target plot grains and the returning amount of potassium removed by the straws according to the target yield of the target plot late rice, the potassium absorption per ton grain of the target plot late rice, the potassium harvesting index and the estimated potassium balance coefficient of the soil in the season;
wherein the returned amount of potassium removed from the target plot grains represents the amount of potassium contained in the grains in the current season of the target plot, and the returned amount of potassium removed from the target plot straws represents the amount of potassium contained in the straws;
s5, obtaining the residual effect of the last-season potash fertilizer of the target plot, wherein the residual effect of the last-season potash fertilizer is the residual potash element amount of the last season of the target plot;
s6, predicting the potassium fertilizer consumption required by the target plot late rice in the current season according to the potassium demand corresponding to the yield reaction, the potassium return amount removed by the target plot grains, the potassium return amount removed by the target plot straws and the residual effect of the last season potassium; the method specifically comprises the following steps:
K＝A+B+C-D
in the formula, K represents the amount of the potash fertilizer in the current season of the target plot, A represents the amount of potassium needed corresponding to the yield reaction, B represents the return amount of potassium removed by grains of the target plot, C represents the return amount of potassium removed by straws of the target plot, and D represents the residual effect of potassium in the previous season.
In step S2, the determining the target yield of the late rice in the target plot according to the average yield of the rice over the years in the target plot specifically includes:
Q＝q×y
wherein Q represents the target yield of the late rice in the target plot, Q represents the average yield of the rice in the historical time period of the target plot, and y represents the target yield coefficient.
In step S3, determining the amount of potassium needed for the yield reaction according to the yield reaction of applying potassium fertilizer to the target plot and the absorption of potassium by the rice per ton, specifically includes:
A＝ΔA×RIEk/REk，
wherein A represents the amount of potassium required corresponding to the yield response, Δ A represents the yield response of the target plot, and RIEkIndicating potassium absorption of rice per ton, REkIndicates the target recovery rate of the potash fertilizer
Wherein Δ a ═ M1-M2，
In the formula, M1Represents the yield of late rice after potassium application, M2Represents the yield of late rice after no potassium treatment.
In step S4, the obtained return amount of potassium removed from the target parcel of grains is obtained by the following formula:
B＝Q×RIEk×HIk
in the formula, B represents the return amount of potassium removed from target plot grains; q represents the target yield of the target plot, RIEkIndicating potassium absorption, HI, of late rice per ton of grainkIndicating the potassium harvest index.
In step S4, the return amount of potassium removed from the target parcel of straw is calculated by the following formula:
C＝Q×RIEk×(1-HIk)×(1-P1)×P2，
in the formula, C represents the return amount of potassium removed from the straws of the target land; q represents the target yield of the target plot, RIEkIndicating potassium absorption, HI, of late rice per ton of grainkDenotes the potassium harvest index, P1Indicates the straw returning ratio, P2And (3) representing the potassium balance coefficient of the soil in season.
In step S5, the quaternary potassium residual effect is calculated by the following formula:
D＝(H1-H2)×P3，
in the formula, D represents the residual effect of quaternary potassium, H1Expressing the input amount of organic fertilizer and fertilizer nutrients of the crops on the target farmland, H2Represents the nutrient removal amount, P, of the crops on the target farmland3Representing a preset ratio.
In a second aspect, an embodiment of the present invention provides a late rice potassium fertilizer usage amount recommendation device, including:
the acquisition module is used for acquiring basic information of the target plot; wherein the basic information at least comprises the average yield of the rice of the target plot over the years, the yield response of the target plot, the potassium absorption of the target plot late rice per ton grain, the potassium harvest index, the proportion of the late rice in the season to be returned to the field in advance, the yield of the crops in the season, the input amount of the potassium in the season and the proportion of the straw to be returned to the field in the season;
the first acquisition module is used for acquiring the target yield of the late rice in the target plot according to the average yield of the rice in the target plot over the years;
the second acquisition module is used for acquiring the potassium content required by the yield reaction according to the yield reaction of the potassium fertilizer applied to the target plot and the potassium absorption of the rice per ton;
a third obtaining module, configured to obtain a potassium return amount removed by the target plot grains and a potassium return amount removed by the straws according to a target yield of the target plot late rice, a ton-grain potassium absorption of the target plot late rice, a potassium harvesting index, and an estimated current-season soil potassium balance coefficient;
wherein the returned amount of potassium removed from the target plot grains represents the amount of potassium contained in the target plot seasonal grains, and the returned amount of potassium removed from the target plot straws represents the amount of potassium contained in the target plot straws removed in season;
a fourth obtaining module, configured to obtain residual effect of last-season potash fertilizer of a target plot, where the residual effect of last-season potash fertilizer is the residual amount of last-season potash fertilizer of the target plot;
the prediction module is used for predicting the potassium fertilizer consumption required by the target plot late rice in the current season according to the potassium demand corresponding to the yield reaction, the potassium return amount removed by the target plot grains, the potassium return amount removed by the target plot straws and the residual effect of the last-season potassium; the method specifically comprises the following steps:
K＝A+B+C-D
in the formula, K represents the amount of the potash fertilizer in the current season of the target plot, A represents the amount of potassium needed corresponding to the yield reaction, B represents the return amount of potassium removed by grains of the target plot, C represents the return amount of potassium removed by straws of the target plot, and D represents the residual effect of potassium in the previous season.
The third obtaining module is specifically configured to:
and (3) calculating to obtain the return amount of potassium removed by the straws of the target land by the following formula:
C＝Q×RIEk×(1-HIk)×(1-P1)×P2，
in the formula, C represents the return amount of potassium removed from the straws of the target land; q represents the target yield of the target plot, RIEkIndicating potassium absorption, HI, of late rice per ton of grainkDenotes the potassium harvest index, P1Indicates the straw returning ratio, P2And (3) expressing the soil potassium balance coefficient.
In a third aspect, an embodiment of the present invention provides an electronic device, including:
at least one processor, at least one memory, a communication interface, and a bus; wherein the content of the first and second substances,
the processor, the memory and the communication interface complete mutual communication through the bus;
the memory stores program instructions executable by the processor, and the processor calls the program instructions to execute the method for recommending the amount of the late rice potash fertilizer provided by any one of the various possible implementation manners of the first aspect.
In a fourth aspect, embodiments of the present invention provide a non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the method for recommending late rice potash fertilizer usage provided in any one of the various possible implementations of the first aspect.
The method and the device for recommending the late rice potash fertilizer use amount comprehensively consider the amount of potassium needed by the late rice yield reaction, the returning amount of potassium removed by target plot grains, the returning amount of potassium removed by target plot straws and the residual of the last-season potash fertilizer, adjust by referring to the soil potassium balance condition, and promote the virtuous cycle and utilization of potassium, thereby ensuring the high yield and high efficiency of late rice production. In addition, the method not only efficiently utilizes a large amount of potassium resources brought into the soil by the straws, but also can correspondingly adjust the using amount of the potassium fertilizer according to the field straw returning proportion, realize accurate estimation of the using amount of the potassium fertilizer required by the high yield of the late rice, and maintain the sustainable supply capacity of the soil potassium by adjusting the potassium balance of the soil.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments or the technical solutions in the prior art are briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a method for recommending the amount of potassium fertilizer used in late rice according to an embodiment of the invention;
fig. 2 is a block diagram of a late rice potassium fertilizer usage amount recommendation device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that in the description of the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Fig. 1 is a schematic flow chart of a method for recommending the dosage of potassium fertilizer for late rice according to an embodiment of the invention, and referring to fig. 1, the method comprises the following steps:
s1, collecting basic information of the target plot; wherein the basic information at least comprises the average yield of the rice of the target plot over the years, the yield response of the target plot, the potassium absorption of the late rice of the target plot per ton of grain and the potassium harvest index.
And collecting the basic information of the target plot, and providing data support for the late rice potassium fertilizer dosage recommendation method. The basic information of the target plot also comprises the pre-straw returning proportion of the current late rice, the yield of crops in the previous season, the input amount of potassium in the previous season and the straw returning proportion in the previous season.
Wherein the yield reaction is obtained by the following formula:
ΔA＝M1-M2，
in the formula, M1Represents the yield of late rice after potassium application, M2Represents the yield of late rice after no potassium treatment.
In the specific implementation process, if no potassium test is carried out, the yield response cannot be directly calculated, and the yield response coefficients corresponding to the high, medium and low levels of the land level can be estimated according to the yield response coefficients respectively: yield response-target yield × potassium yield response coefficient, where table 1 represents a table of potassium yield response coefficients for different stress levels, as shown in table 1:
TABLE 1
| Grade of soil fertility | Reaction coefficient of potassium yield |
| Soil with low fertility | 0.15 |
| Medium fertility soil | 0.09 |
| High fertility soil | 0.05 |
As can be seen from table 1, different potassium yield response coefficients can be obtained according to soil fertility grades, the potassium yield response coefficient corresponding to low fertility soil is 0.15, the potassium yield response coefficient corresponding to medium fertility soil is 0.09, and the potassium yield response coefficient corresponding to high fertility soil is 0.05. The yield reaction can be obtained by multiplying the potassium yield reaction coefficient by the target yield. The data are the yield of potassium reduction treatment and the potassium application yield data obtained by the late rice field fertilizer test developed in China (2000-2017), wherein the potassium yield reaction coefficient is obtained by summarizing the data.
The high, medium and low grade of the ground force level can be evaluated by two methods:
the first method comprises the following steps: and determining the yield reaction according to the measurement grades of the organic matters, the quick-acting nitrogen, the quick-acting phosphorus and the quick-acting potassium of the target plot. Table 2 shows the critical value indexes of nitrogen, phosphorus and potassium in soil test. If the quick-acting nitrogen > is 180mg/kg, upgrading the grade into a grade of middle or high according to the low or middle grade of the organic matter test value; if the rapid-acting nitrogen is <100mg/kg, the "high" rating is degraded to a "medium" rating according to the organic matter test value.
TABLE 2
If there is no soil test result, a second soil fertility rating assessment method is used. Table 3 presents the evaluation method for the second soil fertility grade: and judging the organic matter content according to the texture and the color of the soil, thereby evaluating the soil fertility grade.
TABLE 3
According to the soil fertility grades obtained in the table 2 or the table 3, the potassium yield reaction coefficient can be obtained by combining the soil fertility grade obtained in the table 1.
S2, obtaining the target yield of the late rice in the target plot according to the average yield of the rice in the target plot over the years;
s3, obtaining the potassium content required by the yield reaction according to the yield reaction of the potassium fertilizer applied to the target plot and the absorption of potassium of the rice per ton;
s4, acquiring the returning amount of potassium removed by the target plot grains and the returning amount of potassium removed by the straws according to the target yield of the target plot late rice, the potassium absorption per ton of the target plot late rice, the potassium harvesting index and the estimated soil potassium balance coefficient;
wherein the returned amount of potassium removed from the grains of the target plot represents the amount of potassium contained in the grains of the current season of the target plot, and the returned amount of potassium removed from the straws of the target plot represents the amount of potassium contained in the removed straws.
S5, obtaining residual effect of the last-season potash fertilizer of the target plot, wherein the residual effect of the last-season potash fertilizer is the residual potash fertilizer in the last season of the target plot;
s6, predicting the potassium fertilizer consumption required by the target plot late rice in the current season according to the potassium demand corresponding to the yield reaction, the potassium return amount removed by the target plot grains, the potassium return amount removed by the target plot straws and the residual effect of the last season potassium; the method specifically comprises the following steps:
K＝A+B+C-D
in the formula, K represents the amount of the potash fertilizer in the current season of the target plot, A represents the amount of potassium needed corresponding to the yield reaction, B represents the return amount of potassium removed by grains of the target plot, C represents the return amount of potassium removed by straws of the target plot, and D represents the residual effect of potassium in the previous season.
According to the method for recommending the late rice potash fertilizer dosage, provided by the embodiment of the invention, the potassium amount required by the late rice yield reaction, the potassium returning amount removed by the target plot grains, the potassium returning amount removed by the target plot straws and the last-season potash fertilizer residue are comprehensively considered, and adjustment is carried out by referring to the soil potassium balance condition, so that the virtuous cycle and utilization of potassium are promoted, and the high yield and high efficiency of late rice production are ensured. In addition, the method not only efficiently utilizes a large amount of potassium resources brought into the soil by the straws, but also can correspondingly adjust the using amount of the potassium fertilizer according to the field straw returning proportion, realize accurate estimation of the using amount of the potassium fertilizer required by the high yield of the late rice, and maintain the sustainable supply capacity of the soil potassium by adjusting the potassium balance of the soil.
On the basis of the foregoing embodiment, in step S2, the determining the target yield of the late rice in the target plot according to the average yield of the rice over the years in the target plot specifically includes:
Q＝q×y
wherein Q represents the target yield of the late rice in the target plot, Q represents the average yield of the rice in the historical time period of the target plot, and y represents the target yield coefficient.
In the embodiment of the invention, the average rice yield of the last 3-5 years is selected as the average rice yield of the rice in the past year, and the value of y is 1.1. Determining the target yield Q of the rice according to the average yield of the rice without biological adversity stress in the last 3-5 years of the target plot: the target yield is the average yield of the past × 1.1.
On the basis of the foregoing embodiments, in step S3, determining the amount of potassium needed for the yield reaction according to the yield reaction of applying the potassium fertilizer to the target plot and the potassium absorption of the rice of late rice per ton includes:
A＝ΔA×RIEk/REk，
wherein A represents the amount of potassium required corresponding to the yield response, Δ A represents the yield response of the target plot, and RIEkIndicating potassium element of rice of late rice tonAbsorption, REkRepresenting the target recovery of the potash fertilizer.
Wherein Δ a ═ M1-M2，
Wherein Δ A represents the yield response of the target plot, M1Represents the yield of late rice after potassium application, M2Represents the yield of late rice after no potassium treatment.
Specifically, in this example, the amount of potassium required for the yield reaction can be calculated by the above formula, and the unit of the amount of potassium required for the yield reaction is kg · K2O/ha, the unit of potassium absorption of rice per ton is kg.K2O/t, the recovery rate of the potash fertilizer is percentage.
It should be noted that, in the examples of the present invention, the potassium absorption parameter RIE of rice per ton of rice was usedkIs 25.1 kg. K2O/t,RIEkBased on the multi-year multi-point field test data of late rice, including rice yield and potassium absorption of overground part, the optimal potassium absorption amount of the late rice unit yield is calculated by utilizing a QUEFTS model.
Target recovery rate RE of potash fertilizerkThe method is estimated according to the current potassium utilization rate in the season under the conditions of optimized fertilization and optimal field management, and the reference value of the late rice given by the method is 50%. Potassium harvest index HIkIs the ratio of potassium absorption of grains to overground part, and is also based on years of multipoint field test data, namely Hi of late ricekIs 0.17.
On the basis of the above embodiments, in step S4, the return amount of potassium removed from the target parcel of grains is obtained by the following formula:
B＝Q×RIEk×HIk
in the formula, B represents the return amount of potassium removed from target plot grains; q represents the target yield of the target plot, RIEkIndicating potassium absorption, HI, of late rice per ton of grainkIndicating the potassium harvest index.
On the basis of the above embodiments, in step S4, the returning amount of potassium removed from the target parcel straw is calculated by the following formula:
C＝Q×RIEk×(1-HIk)×(1-P1)×P2，
in the formula, C represents the return amount of potassium removed from the straws of the target land; q represents the target yield of the target plot, RIEkIndicating potassium absorption, HI, of late rice per ton of grainkDenotes the potassium harvest index, P1Indicates the straw returning ratio, P2And (3) expressing the soil potassium balance coefficient.
The input amount of potassium fertilizer of the top season rice crop is obtained according to actual survey data, and the seed removal amount of the top season crop is equal to the top season yield RIEk*HIkTop season crop straw removal (top season yield) RIEk*(1-HIk) (1-returning to field ratio).
P2The optimal value of the potassium element balance coefficient is 0.3, the soil potassium element balance coefficient is a parameter which is provided by taking account of the straw returning proportion of the main production area of late rice and the apparent balance result of soil potassium element, and is used for correcting the straw returning and removing potassium element so as to maintain the potassium element absorption of the overground part within the range of plus or minus 10 percent of the potassium element profit and loss of soil.
In step S5, the quaternary potassium residual effect is calculated by the following formula:
D＝(H1-H2)×P3，
in the formula, D represents the residual effect of quaternary potassium, H1Expressing the input amount of organic fertilizer and potassium fertilizer of the crops on the target farmland, H2Representing the potassium removal amount, P, of the quaternary crop on the target field3Representing a preset ratio.
Compared with the prior art, the embodiment of the invention has the following positive effects:
1. the method for recommending the potassium fertilizer dosage of the late rice provided by the embodiment of the invention caters to the big trend of straw returning in China, not only efficiently utilizes a large amount of potassium resources brought into soil by straws, but also can correspondingly adjust the potassium fertilizer dosage according to the field straw returning proportion, thereby realizing the purpose of accurately applying the potassium fertilizer.
2. The method for recommending the late rice potash fertilizer dosage provided by the embodiment of the invention comprehensively considers the potassium amount required by late rice yield reaction, the potassium amount removed by returning seeds and straws and the last-season potash fertilizer residue, and adjusts by referring to the soil potassium balance condition to promote the good cycle and utilization of potassium, thereby ensuring the high yield and high efficiency of late rice production.
3. The method for recommending the use amount of the potassium fertilizer of the late rice provided by the embodiment of the invention carries out targeted recommendation according to yield reactions of potassium fertilizers in different plots, overcomes the blindness of habit fertilization of farmers, and can make one formula of one family accord with the operation mode of China with small farmers as main bodies; according to the method, only scientific researchers or farmers need to obtain a plurality of items of basic information on the land parcels to which the potash fertilizer is pre-applied, and then the proper amount of the potash fertilizer can be obtained through calculation according to the formula.
4. The field verification test shows that the method is adopted to recommend potassium application to the late rice, the potassium fertilizer dosage required by the late rice with high yield and high efficiency can be accurately estimated, and the soil potassium balance is adjusted to maintain the sustainable supply capacity of the soil potassium.
In order to verify the effectiveness of the scheme, a field verification test needs to be carried out, the field test is carried out in 2017 in 2 main production areas of late rice in Hunan province and Jiangxi province, and verification is carried out aiming at a recommended potassium application method under the condition of returning the late rice straws to the field, so that 12 test points (7 in Jiangxi province and 5 in Hunan province) are calculated in total.
The fertilizing amount ratio of different treatment in each test point of Hunan province and Jiangxi province is shown in Table 4. The recommended amount range of OPT (oriented strand thermal treatment) potassium fertilizer treatment at each test point in Hunan province is 78-111 kg K2O/ha in an average amount of 96kg K2O/ha, generally higher than FP treatment (average 76kg K)2O/ha) and ST treatment (average 78kg K)2O/ha). The average potassium application amount of OPT treatment of each test point in Jiangxi province is (60kg K)2O/ha) was significantly lower than ST treatment (average 78kg K)2O/ha), which is based primarily on local straw mass return considerations at each test site, especially compared to FP treatment (231kg K)2O/ha) greatly reduces the application of potash fertilizer, and the application reduction ratio is up to 74.0%.
Table 4 is a graph showing the results of predicting the amount of fertilizer applied using three different methods, as shown in table 4, where OPT represents the optimized recommended amount of fertilizer applied based on this method; ST represents the recommended amount of fertilizer to be applied based on soil testing; FP represents the amount of fertilizer applied by farmers.
TABLE 4
Table 5 shows the average yield, potassium utilization rate, soil potassium balance and economic benefit comparison of different treated late rice, as shown in table 5, from the results of soil apparent potassium balance profit and loss, although the amount of potassium fertilizer recommended by OPT treatment in hunan province is improved compared with FP and ST treatments, the potassium balance values of the three treatments are basically the same (table 5), indicating that the potassium fertilizer treated by OPT is more effectively utilized. In addition, the yield of the OPT-treated late rice is increased obviously, the yield reaches 7914kg/ha, and the yield is increased by 16.0 percent compared with the FP treatment (6821 kg/ha). The economic benefit of the OPT treatment is higher than that of the farmer habit fertilization and the local soil testing formula fertilization, and the income is increased by 0.2 ten thousand yuan/ha and 0.27 ten thousand yuan/ha respectively compared with the FP treatment and the ST treatment.
TABLE 5
Although the average dosage of the potassium fertilizer in the OPT treatment of each test point in Jiangxi province is obviously lower than the dosage of farmer habit and soil testing formula fertilization, the yield of the late rice is still as high as 6729kg/ha, the economic benefit is 1.53 ten thousand yuan/ha, and the dosage is higher than the other two treatments, which indicates that the rice yield is not influenced and the final benefit is improved by reasonably optimizing the dosage of the potassium fertilizer. The results of the balance of apparent potassium in soil show that the potassium balance of OPT treatment is-15.3 kg K2O/ha, although slightly deficient, meets the criterion that the profit-deficit does not exceed 10% of the potassium uptake in the overground (only 4.2%). For FP and ST treatment, because factors such as a return effect of potassium in straw returning are ignored, the application amount of the potassium fertilizer is too high, the surplus of potassium seriously exceeds the standard, particularly under the condition of local habit potassium application amount, the surplus of potassium reaches 159.5kg/ha, the burden of fertilizer input is increased, and the risk of potassium loss is increased.
According to multipoint field tests in the main late rice production area, the potassium fertilizer recommendation method is proved, the demand of late rice potassium in the season can be accurately estimated, and the purpose of increasing the yield and income of rice is achieved.
Fig. 2 is a block diagram of a device for recommending late rice potash fertilizer usage according to an embodiment of the present invention, as shown in fig. 2, the device includes an acquisition module 201, a first acquisition module 202, a second acquisition module 203, a third acquisition module 204, a fourth acquisition module 205, and a prediction module 206; wherein:
the acquisition module 201 is used for acquiring basic information of a target plot; wherein the basic information at least comprises the average yield of the rice of the target plot over the years, the yield response of the target plot, the potassium absorption of the late rice of the target plot per ton of grain and the potassium harvest index. The first obtaining module 202 is configured to obtain a target yield of late rice in a target plot according to the average yield of rice over the years in the target plot. The second obtaining module 203 is used for obtaining the potassium content required by the yield reaction according to the yield reaction of the potassium fertilizer applied to the target plot and the potassium absorption of the late rice per ton grain. The third obtaining module 204 is configured to obtain a potassium return amount removed by the target plot grains and a potassium return amount removed by the straws according to the target yield of the target plot late rice, the potassium absorption per ton grain of the target plot late rice, the potassium harvesting index and the estimated current-season soil potassium balance coefficient; and the return amount of potassium removed from the target plot grains represents the amount of potassium contained in the target plot seasonal grains, and the return amount of potassium removed from the target plot straws represents the amount of potassium contained in the current season straws. The fourth obtaining module 205 is configured to obtain the residual effect of the last-season potash fertilizer of the target plot, where the residual effect of the last-season potash fertilizer is the residual potassium amount of the last-season potash fertilizer of the target plot. The prediction module 206 is configured to predict the amount of potassium fertilizer required by the target plot late rice in the current season according to the amount of potassium required corresponding to the yield response, the amount of returned potassium removed from the target plot grains, the amount of returned potassium removed from the target plot straws, and the residual effect of potassium in the last season.
The prediction module 206 is specifically configured to predict the amount of potash fertilizer in the current season of the target plot according to the following formula:
K＝A+B+C-D
in the formula, K represents the amount of the potash fertilizer in the current season of the target plot, A represents the amount of potassium needed corresponding to the yield reaction, B represents the return amount of potassium removed by grains of the target plot, C represents the return amount of potassium removed by straws of the target plot, and D represents the residual effect of potassium in the previous season.
On the basis of the foregoing embodiments, the third obtaining module 204 is specifically configured to:
and (3) calculating to obtain the return amount of potassium removed by the straws of the target land by the following formula:
C＝Q×RIEk×(1-HIk)×(1-P1)×P2，
in the formula, C represents the return amount of potassium removed from the straws of the target land; q represents the target yield of the target plot, RIEkIndicating potassium absorption, HI, of late rice per ton of grainkDenotes the potassium harvest index, P1Indicates the straw returning ratio, P2And (3) representing the potassium balance coefficient of the soil in season.
The device for recommending the amount of the late rice potash fertilizer provided by the embodiment of the invention comprehensively considers the amount of potassium required by the late rice yield reaction, the returning amount of potassium removed by target plot grains, the returning amount of potassium removed by target plot straws and the residual of the last-season potash fertilizer, and refers to the soil potassium balance condition for adjustment, so that the virtuous cycle and utilization of potassium are promoted, and the high yield and high efficiency of late rice production are ensured. In addition, the method not only efficiently utilizes a large amount of potassium resources brought into the soil by the straws, but also can correspondingly adjust the using amount of the potassium fertilizer according to the field straw returning proportion, realize accurate estimation of the using amount of the potassium fertilizer required by the high yield of the late rice, and maintain the sustainable supply capacity of the soil potassium by adjusting the potassium balance of the soil.
Because the late rice potash fertilizer usage recommending device and the late rice potash fertilizer usage recommending method are in one-to-one correspondence, detailed description of an embodiment of the late rice potash fertilizer usage recommending device is omitted.
An embodiment of the present invention provides an electronic device, and fig. 3 is a schematic structural diagram of the electronic device according to the embodiment of the present invention, and as shown in fig. 3, the electronic device includes:
at least one processor (processor)301, a communication Interface (Communications Interface)304, at least one memory (memory)302 and a communication bus 303, wherein the at least one processor 301, the communication Interface 304 and the at least one memory 302 are configured to communicate with each other via the communication bus 303. The at least one processor 301 may invoke logic instructions in the at least one memory 302 to perform the following late rice potash fertilizer usage recommendation method, for example, including: collecting basic information of a target land block; wherein the basic information at least comprises the average yield of the rice of the target plot over the years, the yield response of the target plot, the potassium absorption of the late rice of the target plot per ton of grain and the potassium harvest index;
obtaining the target yield of the late rice in the target plot according to the average yield of the rice in the target plot over the years;
obtaining the potassium content required by the yield reaction according to the yield reaction of applying the potassium fertilizer to the target land and the absorption of potassium of the rice per ton;
acquiring the returning amount of potassium removed by the target plot grains and the returning amount of potassium removed by the straws according to the target yield of the target plot late rice, the potassium absorption per ton grain of the target plot late rice, the potassium harvesting index and the estimated potassium balance coefficient of the soil in the season; and the return amount of potassium removed from the target plot grains represents the amount of potassium contained in the target plot seasonal grains, and the return amount of potassium removed from the target plot straws represents the amount of potassium contained in the current season straws.
Obtaining the residual effect of the last-season potash fertilizer of a target plot, wherein the residual effect of the last-season potash fertilizer is the residual potassium amount of the last season of the target plot;
predicting the potassium fertilizer consumption required by the target plot late rice in the current season according to the potassium demand corresponding to the yield reaction, the potassium return amount removed by the target plot seeds, the potassium return amount removed by the target plot straws and the residual effect of the last season potassium; the method specifically comprises the following steps:
K＝A+B+C-D
in the formula, K represents the amount of the potash fertilizer in the current season of the target plot, A represents the amount of potassium needed corresponding to the yield reaction, B represents the return amount of potassium removed by grains of the target plot, C represents the return amount of potassium removed by straws of the target plot, and D represents the residual effect of potassium in the previous season.
An embodiment of the present invention further provides a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions enable a computer to execute the method for recommending late rice potash fertilizer usage provided in the corresponding embodiment, for example, the method includes: collecting basic information of a target land block; wherein the basic information at least comprises the average yield of the rice of the target plot over the years, the yield response of the target plot, the potassium absorption of the target plot late rice per ton grain, the potassium harvest index, the proportion of the late rice in the season to be returned to the field in advance, the yield of the crops in the season, the input amount of the potassium in the season and the proportion of the straw to be returned to the field in the season;
obtaining the target yield of the late rice in the target plot according to the average yield of the rice in the target plot over the years;
obtaining the potassium content required by the yield reaction according to the yield reaction of applying the potassium fertilizer to the target land and the absorption of potassium of the rice per ton;
acquiring the returning amount of potassium removed by the target plot grains and the returning amount of potassium removed by the straws according to the target yield of the target plot late rice, the potassium absorption per ton grain of the target plot late rice, the potassium harvesting index and the estimated potassium balance coefficient of the soil in the season; and the return amount of potassium removed from the target plot grains represents the amount of potassium contained in the target plot seasonal grains, and the return amount of potassium removed from the target plot straws represents the amount of potassium contained in the current season straws.
Obtaining the residual effect of the last-season potash fertilizer of a target plot, wherein the residual effect of the last-season potash fertilizer is the residual potassium amount of the last season of the target plot;
predicting the potassium fertilizer consumption required by the target plot late rice in the current season according to the potassium demand corresponding to the yield reaction, the potassium return amount removed by the target plot seeds, the potassium return amount removed by the target plot straws and the residual effect of the last season potassium; the method specifically comprises the following steps:
K＝A+B+C-D
in the formula, K represents the amount of the potash fertilizer in the current season of the target plot, A represents the amount of potassium needed corresponding to the yield reaction, B represents the return amount of potassium removed by grains of the target plot, C represents the return amount of potassium removed by straws of the target plot, and D represents the residual effect of potassium in the previous season.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The method for recommending the using amount of the late rice potash fertilizer is characterized by comprising the following steps of:
collecting basic information of a target land block; wherein the basic information at least comprises the average yield of the rice of the target plot over the years, the yield response of the target plot, the potassium absorption of the late rice of the target plot per ton of grain and the potassium harvest index;
obtaining the target yield of the late rice in the target plot according to the average yield of the rice in the target plot over the years;
obtaining the potassium content required by the yield reaction according to the yield reaction of applying the potassium fertilizer to the target land and the absorption of potassium of the rice per ton;
acquiring the returning amount of potassium removed by the target plot grains and the returning amount of potassium removed by the straws according to the target yield of the target plot late rice, the potassium absorption per ton grain of the target plot late rice, the potassium harvesting index and the estimated potassium balance coefficient of the soil in the season;
wherein the returned potassium amount removed from the target plot grains represents the potassium amount contained in the current season grains of the target plot, and the returned potassium amount removed from the target plot straws represents the potassium amount contained in the current season straws;
obtaining the last-season potassium residual quantity of a target plot, wherein the last-season potassium residual quantity is the last-season residual potassium quantity of the target plot;
predicting the potassium fertilizer dosage required by the target plot late rice in the current season according to the potassium demand corresponding to the yield reaction, the potassium return amount removed by the target plot grains, the potassium return amount removed by the target plot straws and the residual potassium amount in the previous season; the method specifically comprises the following steps:
K＝A+B+C-D
in the formula, K represents the amount of potash fertilizer in the current season of the target plot, A represents the amount of potassium needed corresponding to the yield reaction, B represents the return amount of potassium removed from grains of the target plot, C represents the return amount of potassium removed from straws of the target plot, and D represents the residual amount of potassium in the previous season;
determining the potassium content required by the yield reaction according to the yield reaction of applying the potassium fertilizer to the target plot and the potassium absorption of the rice per ton, wherein the potassium content required by the yield reaction specifically comprises the following steps:
A＝ΔA×RIEk/REk，
wherein A represents the amount of potassium required corresponding to the yield response, Δ A represents the yield response of the target plot, and RIEkIndicating potassium absorption of rice per ton, REkRepresents the target recovery rate of the potash fertilizer;
wherein Δ a ═ M1-M2，
In the formula, M1Represents the yield of late rice after potassium application, M2Represents the yield of late rice after no potassium treatment;
obtaining the return amount of potassium removed from the target plot grains by the following formula:
B＝Q×RIEk×HIk
in the formula, B represents the return amount of potassium removed from target plot grains; q represents the target yield of the target plot, RIEkIndicating potassium absorption, HI, of late rice per ton of grainkRepresents a potassium harvest index;
the return amount of potassium removed by the straws of the target land is calculated by the following formula:
C＝Q×RIEk×(1-HIk)×(1-P1)×P2，
in the formula, C represents the return amount of potassium removed from the straws of the target land; q represents the target yield of the target plot, RIEkIndicating potassium absorption, HI, of late rice per ton of grainkDenotes the potassium harvest index, P1Indicates the straw returning ratio, P2Represents the soil potassium balance coefficient, P2The value of (A) is 0.3.
2. The late rice potassium fertilizer usage recommendation method according to claim 1, wherein the determining the target yield of the late rice in the target plot based on the average yield of the rice over the years in the target plot specifically comprises:
Q＝q×y
wherein Q represents the target yield of the late rice in the target plot, Q represents the average yield of the rice in the historical time period of the target plot, and y represents the target yield coefficient.
3. The late rice potassium fertilizer usage recommendation method according to claim 1, wherein the quaternary potassium residue amount is calculated by the following formula:
D＝(H1-H2)×P3，
wherein D represents the residual amount of the quaternary potassium, H1Presentation instrumentThe input amount of organic fertilizer and potassium fertilizer for the seasonal crops of the target land, H2Representing the amount of potassium removed from the quaternary crop in the target plot, P3Representing a preset ratio.
4. The utility model provides a device is recommended to late rice potash fertilizer quantity which characterized in that includes:
the acquisition module is used for acquiring basic information of the target plot; wherein the basic information at least comprises the average yield of the rice of the target plot over the years, the yield response of the target plot, the potassium absorption of the late rice of the target plot per ton of grain and the potassium harvest index;
the first acquisition module is used for acquiring the target yield of the late rice in the target plot according to the average yield of the rice in the target plot over the years;
the second acquisition module is used for acquiring the potassium content required by the yield reaction according to the yield reaction of the potassium fertilizer applied to the target plot and the potassium absorption of the rice per ton; determining the potassium content required by the yield reaction according to the yield reaction of applying the potassium fertilizer to the target plot and the potassium absorption of the rice per ton, wherein the potassium content required by the yield reaction specifically comprises the following steps:
A＝ΔA×RIEk/REk，
wherein A represents the amount of potassium required corresponding to the yield response, Δ A represents the yield response of the target plot, and RIEkIndicating potassium absorption of rice per ton, REkRepresents the target recovery rate of the potash fertilizer;
wherein Δ a ═ M1-M2，
In the formula, M1Represents the yield of late rice after potassium application, M2Represents the yield of late rice after no potassium treatment;
a third obtaining module, configured to obtain a potassium return amount removed by the target plot grains and a potassium return amount removed by the straws according to a target yield of the target plot late rice, a ton-grain potassium absorption of the target plot late rice, a potassium harvesting index, and an estimated current-season soil potassium balance coefficient;
wherein the returned potassium amount removed from the target plot grains represents the potassium amount contained in the current season grains of the target plot, and the returned potassium amount removed from the target plot straws represents the potassium amount contained in the current season straws;
a fourth obtaining module, configured to obtain an upper-season residual potassium amount of the target plot, where the upper-season residual potassium amount is the upper-season residual potassium amount of the target plot;
the prediction module is used for predicting the potassium fertilizer usage amount required by the target plot late rice in the current season according to the potassium demand amount corresponding to the yield reaction, the potassium return amount removed by the target plot grains, the potassium return amount removed by the target plot straws and the residual quaternary potassium amount; the method specifically comprises the following steps:
K＝A+B+C-D
in the formula, K represents the amount of potash fertilizer in the current season of the target plot, A represents the amount of potassium needed corresponding to the yield reaction, B represents the return amount of potassium removed from grains of the target plot, C represents the return amount of potassium removed from straws of the target plot, and D represents the residual amount of potassium in the previous season;
the return amount of potassium removed by the straws of the target land is calculated by the following formula:
C＝Q×RIEk×(1-HIk)×(1-P1)×P2，
in the formula, C represents the return amount of potassium removed from the straws of the target land; q represents the target yield of the target plot, RIEkIndicating potassium absorption, HI, of late rice per ton of grainkDenotes the potassium harvest index, P1Indicates the straw returning ratio, P2Expressing the soil potassium balance coefficient; the P is2The value of (A) is 0.3.
5. An electronic device, comprising:
at least one processor, at least one memory, a communication interface, and a bus; wherein the content of the first and second substances,
the processor, the memory and the communication interface complete mutual communication through the bus;
the memory stores program instructions executable by the processor, the processor calling the program instructions to perform the late rice potassium fertilization recommendation method of any one of claims 1 to 3.
6. A non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the late rice potassium fertilization recommendation method of any one of claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910461235.3A CN110140501B (en) | 2019-05-30 | 2019-05-30 | Late rice potash fertilizer usage amount recommendation method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910461235.3A CN110140501B (en) | 2019-05-30 | 2019-05-30 | Late rice potash fertilizer usage amount recommendation method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110140501A CN110140501A (en) | 2019-08-20 |
| CN110140501B true CN110140501B (en) | 2021-09-03 |
Family
ID=67592158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910461235.3A Active CN110140501B (en) | 2019-05-30 | 2019-05-30 | Late rice potash fertilizer usage amount recommendation method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110140501B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105165215A (en) * | 2015-08-06 | 2015-12-23 | 中国农业科学院农业资源与农业区划研究所 | Optimized recommended fertilization method for soybeans |
| CN108575240A (en) * | 2018-03-30 | 2018-09-28 | 中国农业科学院农业资源与农业区划研究所 | A kind of Nonirrigated Potato optimization fertilization recommendation method based on model |
| CN108934355A (en) * | 2018-06-21 | 2018-12-07 | 北京市农林科学院 | A kind of method of quick determining Chinese cabbage dose |
| CN109197342A (en) * | 2018-10-22 | 2019-01-15 | 浙江大学 | A kind of tea place potash fertilizer fertilization recommendation method |
| CN109729806A (en) * | 2019-03-15 | 2019-05-10 | 西南大学 | A kind of fertilizing systems method for growth of watermelon |
-
2019
- 2019-05-30 CN CN201910461235.3A patent/CN110140501B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105165215A (en) * | 2015-08-06 | 2015-12-23 | 中国农业科学院农业资源与农业区划研究所 | Optimized recommended fertilization method for soybeans |
| CN108575240A (en) * | 2018-03-30 | 2018-09-28 | 中国农业科学院农业资源与农业区划研究所 | A kind of Nonirrigated Potato optimization fertilization recommendation method based on model |
| CN108934355A (en) * | 2018-06-21 | 2018-12-07 | 北京市农林科学院 | A kind of method of quick determining Chinese cabbage dose |
| CN109197342A (en) * | 2018-10-22 | 2019-01-15 | 浙江大学 | A kind of tea place potash fertilizer fertilization recommendation method |
| CN109729806A (en) * | 2019-03-15 | 2019-05-10 | 西南大学 | A kind of fertilizing systems method for growth of watermelon |
Non-Patent Citations (1)
| Title |
|---|
| 基于产量反应和农学效率的水稻和玉米推荐施肥方法研究;徐新朋;《中国博士学位论文全文数据库》;20160115(第1期);第D047-17页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110140501A (en) | 2019-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Monzon et al. | Precision agriculture based on crop physiological principles improves whole-farm yield and profit: A case study | |
| Godard et al. | Use of available information at a European level to construct crop nitrogen response curves for the regions of the EU | |
| Cui et al. | Current nitrogen management status and measures to improve the intensive wheat–maize system in China | |
| CN110073789B (en) | Radish recommended fertilization method | |
| Zhang et al. | Analyzing and modelling the effect of long-term fertilizer management on crop yield and soil organic carbon in China | |
| Rurinda et al. | Managing soil fertility to adapt to rainfall variability in smallholder cropping systems in Zimbabwe | |
| CN105165215A (en) | Optimized recommended fertilization method for soybeans | |
| Guvele | Gains from crop diversification in the Sudan Gezira scheme | |
| Uchino et al. | Effects of nitrogen application on sweet sorghum (Sorghum bicolor (L.) Moench) in the semi-arid tropical zone of India | |
| Schönhart et al. | Integrated analysis of climate change impacts and adaptation measures in Austrian agriculture | |
| Wortmann et al. | Fertilizer use optimization in sub-Saharan Africa | |
| Saseendran et al. | Simulated yield and profitability of five potential crops for intensifying the dryland wheat-fallow production system | |
| Kurai et al. | Efficient rates of nitrogenous fertiliser for irrigated sweet sorghum cultivation during the post-rainy season in the semi-arid tropics | |
| Fradj et al. | Optimal management of perennial energy crops by farming systems in France: A supply-side economic analysis | |
| Huang et al. | Sweetpotato in China: economic aspects and utilization in pig production | |
| Sapkota et al. | An economic analysis of rice production in Rautahat district of Nepal | |
| Saldukaitė et al. | Predicting energy efficiency and greenhouse gases reduction potential under different tillage management and farm size scenarios for winter wheat production | |
| Dhillon et al. | Influence of staggered sown Spring sunflower (Helianthus annuus L.) at varying intra–row spacing and applied–N on pre–and post–anthesis N dynamics and dry matter partitioning in Indo–Gangetic Plains Region | |
| Madamombe et al. | Climate change awareness and adaptation strategies by smallholder farmers in semi-arid areas of Zimbabwe | |
| CN110036738B (en) | Method and system for predicting use amount of potassium fertilizer of middle rice based on straw returning | |
| CN110140501B (en) | Late rice potash fertilizer usage amount recommendation method and device | |
| Rawal et al. | Accumulation of nitrogen, phosphorus, and potassium in various stages of hybrid maize (Zea mays l.) as affected by different levels of NPK in silty clay loam soil of Nepal | |
| Huang et al. | Evaluation of production capacity for rice-rapeseed cropping system in China | |
| Pahlmann et al. | Possible impact of the Renewable Energy Directive on N fertilization intensity and yield of winter oilseed rape in different cropping systems | |
| Tsujimoto et al. | An application of digital imagery analysis to understand the effect of N application on light interception, radiation use efficiency, and grain yield of maize under various agro-environments in Northern Mozambique |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |