CN104145585A - Fertilizer applying method and application for reducing rice planting pollution discharge - Google Patents
Fertilizer applying method and application for reducing rice planting pollution discharge Download PDFInfo
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Abstract
The invention belongs to the field of agricultural pollution system control and discloses a high-benefit, low-emission and low-pollution fertilizer applying method for reducing rice planting pollution discharge. The method comprises the following steps: determining an optimum fertilizer applying amount; applying organic fertilizer and chemical fertilizer as base fertilizer in a mixed manner, wherein the applied nitrogen is 35%-45% of the total amount of nitrogen, the applied phosphorus is 90%-95% of the total amount of phosphorus, the applied potassium is 25%-35% of the total amount of potassium, the organic fertilizer and the chemical fertilizer are uniformly applied into a rice field, and the base fertilizer is applied into a land in a manner of deep ploughing; applying tillering fertilizer twice in a manner of field scattering, wherein in the first applying step, the applied nitrogen is 30%-40% of the total amount of nitrogen, and in the second applying step, the applied nitrogen is 10%-20% of the total amount of nitrogen and the applied potassium is 35%-45% of the total amount of potassium; and applying earing fertilizer in a manner of foliage spray, wherein the applied nitrogen is 5%-10% of the total amount of nitrogen, the applied phosphorus is 5%-10% of the total amount of phosphorus and the applied potassium is 20%-30% of the total amount of potassium. By using the fertilizer applying method, the optimum effects of the maximization of the utilization rate of fertilizers and the minimization of environmental pollution can be realized.
Description
Technical field
The invention belongs to agricultural pollution system control field, particularly the fertilizing method of the minimizing Rice Cropping blowdown of a kind of high benefit, low emission, of low pollution.
Background technology
In Rice Cropping process, with fertilizer application amount, increase, rice yield really improve to a certain extent, farmers' income is increase thereupon also; But owing to blindly using and excessive input, to ecotope, serious impact and destruction have been brought simultaneously.Particularly, in China, improper China's environment that is administered to of chemical fertilizer has brought immense pressure, and major embodiment is three aspects: the one, and nitrogen enters atmospheric environment, has increased " greenhouse gases ", causes global air temperature warming; The 2nd, nitrogen P elements enters water body system with runoff, causes water body " eutrophication "; The 3rd, in soil, single nutritive element is superfluous, causes soil to reduce the absorption efficiency of other nutritive elements, has destroyed the inherent balance of soil.
Trace it to its cause, there are the following problems for China's Rice Cropping fertilizing method: the one, too rely on chemical fertilizer, and do not focus on using of fertilizer, a large amount of like this chemical fertilizer loss of elements has not only affected rice field fertility and also environment has been caused serious harm.The 2nd, still continue out-of-date fertilising theory, by experience, blindly apply fertilizer, be careless about Application Ratio, pursue the maximization of fertilizing amount etc.The imbalance of Application Ratio has caused the most of rice fields of China " the few phosphorus potassium deficiency of many nitrogen ", for environmental pollution hides some dangers for.Most peasants still adopts Traditional Man to spread fertilizer over the fields the way then plowing when topdressing to crop in addition, although save labor, very easily causes volatilization and the loss of chemical fertilizer.
Summary of the invention
In order to overcome the shortcoming and deficiency of above-mentioned prior art, primary and foremost purpose of the present invention is to provide the fertilizing method of the minimizing Rice Cropping blowdown of a kind of high benefit, low emission, of low pollution, and the method can reach the minimized optimum efficiency of maximization and the environmental pollution of utilization rate of fertilizer simultaneously.
The application of the fertilizing method of minimizing Rice Cropping blowdown that another object of the present invention is to provide above-mentioned high benefit, low emission, of low pollution in controlling agricultural pollution.
Object of the present invention realizes by following proposal:
A fertilizing method for the minimizing Rice Cropping blowdown of high benefit, low emission, of low pollution, comprises following operating procedure:
(1) determine optimum fertilizing amount;
(2) apply base fertilizer: adopt fertilizer and chemical fertilizer to mix and use, applying nitrogen is 35~45% of nitrogen total amount, apply phosphorus element for 90~95% of phosphorus element total amount, apply potassium element for 25~35% of potassium element total amount, wherein nitrogen is all provided by fertilizer, fertilizer provides not enough phosphorus element, potassium is plain is supplemented by phosphate fertilizer, potash fertilizer, and described fertilizer and chemical fertilizer evenly impose on rice field, then the tillage method that adopts fertilizer deep ploughing to bury;
(3) fetilizer for tillering: fetilizer for tillering applies nitrogenous fertilizer for the first time, applying nitrogen is 30~40% of nitrogen total amount; Fetilizer for tillering applies nitrogenous fertilizer and potash fertilizer for the second time, apply nitrogen and be nitrogen total amount 10~20%, apply potassium element for 35~45% of potassium element total amount, the mode that described nitrogenous fertilizer, potash fertilizer adopt field to shed;
(4) ear manuer: apply nitrogenous fertilizer, potash fertilizer and phosphate fertilizer, applying nitrogen is 5~10% of nitrogen total amount; Apply phosphorus element for 5~10% of phosphorus element total amount; Apply potassium element for 20~30% of potassium element total amount, described nitrogenous fertilizer, potash fertilizer and phosphate fertilizer adopt the mode of foliage-spray.
The described fertilizer of step (2) refers to the farmyard manure of composting by fermentation;
Described nitrogenous fertilizer is any one in the conventional nitrogenous fertilizer in this area, is preferably urea or carbon ammonium;
Described phosphate fertilizer is any one in the conventional phosphate fertilizer in this area, is preferably fused calcium magnesium phosphate;
Described potash fertilizer is any one in the conventional potash fertilizer in this area, is preferably potassium chloride.
The described fertilization depth that applies base fertilizer is apart from soil surface 15~20cm.
The sowing amount of described fertilizer be take and applied nitrogen as 35~45% of nitrogen total amount.
Preferably, using for the first time fetilizer for tillering period described in step (3) is that rice shoot enters 5~7d behind field, for the second time fetilizer for tillering use period for fetilizer for tillering for the first time use after 9~11d.Fetilizer for tillering topdresses in soil surface or field face water.
The described nitrogenous fertilizer of step (3) is any one in the conventional nitrogenous fertilizer in this area, is preferably urea or carbon ammonium;
Described potash fertilizer is any one in the conventional potash fertilizer in this area, is preferably the quick-acting fertilizers such as potassium chloride.
The described application stage of panicle fertilizer of step (4) generally starts differentiation to the time of heading from young fringe, and early rice is 27~30 days, and semilate rice is 35~40 days, and late rice is 42~47 days.
Described nitrogenous fertilizer is any one in the conventional nitrogenous fertilizer in this area, is preferably urea or carbon ammonium;
Described phosphate fertilizer is any one in the conventional phosphate fertilizer in this area, is preferably the quick-acting fertilizers such as potassium dihydrogen phosphate;
Described potash fertilizer is any one in the conventional potash fertilizer in this area, is preferably the quick-acting fertilizers such as potassium chloride.
In order to guarantee to spray evenly, the mode of described foliage-spray sprays in blade face after referring to nitrogenous fertilizer, potash fertilizer and phosphate fertilizer to be watered, and spray concentration is 0.8~1%.
The described definite optimum fertilizing amount of step (1) refers to calculate nutritive element demand by local paddy rice average yield combining target units of production, determines thus optimum fertilizing amount.
The sowing amount of phosphate fertilizer, potash fertilizer according in fertilizer, provide when quaternary phosphonium element and potassium element and this stage phosphorus, potassium apply between ratio, difference is big or small to be determined.
Said method is mainly applicable in Rice Cropping.
The application of the fertilizing method of above-mentioned minimizing Rice Cropping blowdown in controlling agricultural pollution.
Mechanism of the present invention is:
The whole growing process of paddy rice is divided into vegetative growth phase and reproductive stage.Be mainly the growth of trophosome root, stem, leaf vegetative growth phase, with the vigorous absorption of nitrogen phosphorus and assimilation, take as the leading factor, the absorptive amount of potassium has also reached peak in tillering stage simultaneously, and during this, using of fetilizer for tillering is to promote to tiller, form strong sprout, guarantee that unit are has enough spike numbers.Reproductive stage be mainly reproductive organs formation, grow up and blossom and bear fruit, during this, ear manuer uses object centered by promoting that fringe is large, grain is many, grain is satisfied.Therefore, grasp the growth of each growing stage of paddy rice and nutritional characteristic and and environment between correlation, then the rational application of fertilizer stage by stage, reduces fertilizer loss amount when could obtain high yield; Simultaneously in conjunction with application of organic fertilizers, when improving soil property, utilize the spacetabs type of element in fertilizer can reduce the number of dropouts of nitrogen phosphorus potassium.
The present invention, with respect to prior art, has following advantage and beneficial effect:
Fertilizing method of the present invention is simple to operate, can reach the optimum efficiency that promotes utilization rate of fertilizer and reduce environmental pollution simultaneously; By experimental results demonstrate, this fertilizing method can make nitrogen loss reduce 65~70%, and phosphorus element runs off and reduces 40~50%, and potassium element runs off and reduces by 30~35% left and right.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
The concrete computational process of optimum fertilizing amount with reference in < < vegetable nutrient and fertilizer practice > > about the basic principle of method of fertilization for target yield:
Optimum fertilizing amount=[(the Nutrient Absorption amount of target output * specific yield)-soil nurtient supply quantity]/(nutrient content * fertilizer this season availability of institute's fertilise) (formula 1)
Soil nurtient supply quantity=soil nutrien measuring value * 0.15 (conversion coefficients of every 667 square metres) * soil nutrient correction coefficient (formula 2)
Soil nutrient correction coefficient=(not fertilization area per mu yield * specific yield Nutrient Absorption amount)/(soil nutrien measuring value * 0.15) (formula 3)
Target output: be to determine according to local temperature conditions, cultivar, managerial skills and grower's re-set target;
The Nutrient Absorption amount of specific yield: according to interrelated data, the every formation of paddy rice 100kg paddy needs absorbed nitrogen (N) 1.7~2.0kg, phosphorus (P) 0.7~1.2kg, potassium (K) 1.8~3.6kg;
Soil nutrien measuring value gets by sampling analysis.
Fertilizer this season availability: this season availability of general nitrogen phosphorus potassium is between 20~30% in the fertilizer of stack retting, the this season availability of urea is 40~50%, the this season availability of carbon ammonium is 40~55%, the this season availability of fused calcium magnesium phosphate is 20~25%, and this season availability of potassium chloride is 50~60%.
The sowing amount of phosphate fertilizer, potash fertilizer according in fertilizer, provide when quaternary phosphonium element and potassium element and this stage phosphorus, potassium apply between ratio, difference is big or small to be determined.
In fertilizer, nitrogen, phosphorus, potassium content data get after being analyzed by sampling experimental.
Embodiment 1
In Jin Shan town, Wenchang City, Hainan Province, choose and have the plot of certain slope cultivated whole, every experimental plot area is 10 * 10m
2, in community one jiao dig a length and width, be the runoff collecting pit of 200cm * 100cm * 90cm deeply; Raining, the runoff producing enters runoff collecting pit, collection water sample is analyzed mensuration;
3 processed group are set altogether, are respectively 1 experimental group, 1 control group, 1 blank group.Experimental group fertilization mode accounts for 35% of total fertilizing amount for fertilizer provides nitrogen, and the phosphorus element, the plain insufficient section of potassium that in fertilizer, provide are supplemented by chemical fertilizer; Control group fertilization mode is for all using chemical fertilizer; Blank group is not used any fertilizer, its objective is and measures soil nutrient correction coefficient.
In conjunction with local conditions, every 100m is set
2output is 60kg, utilize formula 1,2 to calculate respectively the fertilizing amount in each stage of paddy rice, base fertilizer is used the fertilizer of 258.7kg stack retting, wherein, fertilizer provide phosphorus element be phosphorus element total amount 55.8%, provide potassium element for 13.9% of potassium element total amount, it is plain that 4.08kg fused calcium magnesium phosphate and 1.0kg potassium chloride supplement not enough phosphorus element and potassium, after fertilizer, fused calcium magnesium phosphate and potassium chloride are evenly used, horse back covers buried, and fertilizer deep ploughing is 15~20cm; At rice plant of tillering stage and heading stage, divide three times with fertilizer top dressing, front twice in tillering stage, for the third time at heading stage.The fetilizer for tillering urea amount of application that topdresses is 1.7kg for the first time, and fetilizer for tillering topdresses as urea 0.6kg and potassium chloride 1.2kg for the second time, and fertilizing type plows for spreading fertilizer over the fields, after fertilising, irrigate; Ear manuer topdresses as urea 0.28kg, and potassium dihydrogen phosphate 0.05kg and potassium chloride 2.2kg are watered the mode that adopts foliage-spray after 16kg.
Contrast be treated to the fertilising of whole employing single-element fertilizers, i.e. urea 5.5kg, superphosphate 11.1kg, potassium chloride 6.2kg; Wherein 70% of chemical fertilizer total amount make base fertilizer, 30% remaining disposable topdressing applies, and fertilization mode all plows for spreading fertilizer over the fields, and after fertilising, irrigates at once;
The inapplicable any fertilizer of blank group, it is 0.71,0.51,0.55 that the soil nutrient correction coefficient that can obtain nitrogen phosphorus potassium by formula 3 is respectively.
By mensuration irrigate and rainfall after nitrogen, phosphorus, potassium element in runoff, found that: adopt the nitrogen phosphorus potassium loss of the experimental field that reduces discharging fertilising to be respectively: 0.7kg, 1.2kg and 0.8kg, and the loss of the nutritive element of contrast is nitrogen 2.18kg, phosphorus element is 2.3kg, potassium element is 1.2kg, the nitrogen of fertilizing method of the present invention, phosphorus, potassium reduce discharging 68%, 46% and 33.3% respectively relatively, have reached desirable effect.
Embodiment 2
In Jin Shan town, Wenchang City, Hainan Province, choose and have the plot of certain slope cultivated whole, every experimental plot area is 10 * 10m
2, in community one jiao dig a length and width, be the runoff collecting pit of 200cm * 100cm * 90cm deeply; Raining, the runoff producing enters runoff collecting pit, collection water sample is analyzed mensuration;
3 processed group are set altogether, are respectively 1 experimental group, 1 control group, 1 blank group.Experimental group fertilization mode accounts for 40% of total fertilizing amount for fertilizer provides nitrogen, and the phosphorus element, the plain insufficient section of potassium that in fertilizer, provide are supplemented by chemical fertilizer; Control group fertilization mode is for all using chemical fertilizer; Blank group is not used any fertilizer, its objective is and measures soil nutrient correction coefficient.
In conjunction with local conditions, every 100m is set
2output is 60kg, utilize formula 1,2 to calculate respectively the fertilizing amount in each stage of paddy rice, the agricultural machinery that base fertilizer is used 295.6kg stack retting is fertile, wherein, fertilizer provide phosphorus element be phosphorus element total amount 63.7%, potassium element is provided is potash fertilizer total amount 15.9%, it is plain that 3.5kg fused calcium magnesium phosphate and 0.9kg potassium chloride supplement not enough phosphorus element and potassium, after fertilizer, fused calcium magnesium phosphate and potassium chloride are evenly used, horse back covers buried, and fertilizer deep ploughing is 15~20cm; At rice plant of tillering stage and heading stage, divide three times with fertilizer top dressing, front twice in tillering stage, for the third time at heading stage.The fetilizer for tillering urea amount of application that topdresses is 1.9kg for the first time, and fetilizer for tillering topdresses as urea 0.8kg and potassium chloride 1.5kg for the second time, and fertilizing type plows for spreading fertilizer over the fields, after fertilising, irrigate; Ear manuer topdresses as urea 0.38kg, and potassium dihydrogen phosphate 0.07kg and potassium chloride 2.5kg are watered the mode that adopts foliage-spray after 17kg.
Contrast be treated to the fertilising of whole employing single-element fertilizers, i.e. urea 5.5kg, superphosphate 11.1kg, potassium chloride 6.2kg; Wherein 70% of chemical fertilizer total amount make base fertilizer, 30% remaining disposable topdressing applies, and fertilization mode all plows for spreading fertilizer over the fields, and after fertilising, irrigates at once;
The inapplicable any fertilizer of blank group, it is 0.70,0.49,0.56 that the soil nutrient correction coefficient that can obtain nitrogen phosphorus potassium by formula 3 is respectively.
By mensuration irrigate and rainfall after nitrogen, phosphorus, potassium element in runoff, found that: adopt the nitrogen phosphorus potassium loss of the experimental field that reduces discharging fertilising to be respectively: 1.2kg, 1.5kg and 0.6kg, and the loss of the nutritive element of contrast is nitrogen 3.9kg, phosphorus element is 2.7kg, potassium element is 0.7kg, the nitrogen of fertilizing method of the present invention, phosphorus, potassium reduce discharging 69%, 44% and 30% respectively relatively, have reached desirable effect.
Embodiment 3
In Luo Dou town, ChangSha, Hunan Province county, choose and have the plot of certain slope cultivated whole, every experimental plot area is 10 * 10m
2, in community one jiao dig a length and width, be the runoff collecting pit of 200cm * 100cm * 90cm deeply; Raining, the runoff producing enters runoff collecting pit, collection water sample is analyzed mensuration;
3 processed group are set altogether, are respectively 1 experimental group, 1 control group, 1 blank group.Experimental group fertilization mode accounts for 45% of total fertilizing amount for fertilizer provides nitrogen, and the phosphorus element, the plain insufficient section of potassium that in fertilizer, provide are supplemented by chemical fertilizer; Control group fertilization mode is for all using chemical fertilizer; Blank group is not used any fertilizer, its objective is and measures soil nutrient correction coefficient.
In conjunction with local conditions, every 100m is set
2output is 62kg, utilize formula 1,2 to calculate respectively the fertilizing amount in each stage of paddy rice, the agricultural machinery that base fertilizer is used 33.3kg stack retting is fertile, wherein, fertilizer provide phosphorus element be phosphorus element total amount 71.7%, provide potassium element for 17.9% of potassium element total amount, 2.8kg fused calcium magnesium phosphate and 0.8kg potassium chloride supplement not enough phosphate fertilizer and potash fertilizer, after fertilizer, fused calcium magnesium phosphate and potassium chloride are evenly used, horse back covers buried, and fertilizer deep ploughing is 15~20cm; At rice plant of tillering stage and heading stage, divide three times with fertilizer top dressing, front twice in tillering stage, for the third time at heading stage.The fetilizer for tillering urea amount of application that topdresses is 2.2kg for the first time, and fetilizer for tillering topdresses as urea 1.1kg and potassium chloride 1.9kg for the second time, and fertilizing type plows for spreading fertilizer over the fields, after fertilising, irrigate; Ear manuer topdresses as urea 0.55kg, and potassium dihydrogen phosphate 0.09kg and potassium chloride 2.8kg are watered the mode that adopts foliage-spray after 18kg.
Contrast be treated to the fertilising of whole employing single-element fertilizers, i.e. urea 5.6kg, superphosphate 11.3kg, potassium chloride 6.3kg; Wherein 70% of chemical fertilizer total amount make base fertilizer, 30% remaining disposable topdressing applies, and fertilization mode all plows for spreading fertilizer over the fields, and after fertilising, irrigates at once;
The inapplicable any fertilizer of blank group, it is 0.74,0.53,0.58 that the soil nutrient correction coefficient that can obtain nitrogen phosphorus potassium by formula 3 is respectively.
By mensuration irrigate and rainfall after nitrogen, phosphorus, potassium element in runoff, found that: adopt the nitrogen phosphorus potassium loss of the experimental field that reduces discharging fertilising to be respectively: 0.78kg, 1.3kg and 0.7kg, and the loss of the nutritive element of contrast is nitrogen 2.5kg, phosphorus element is 2.0kg, potassium element is 1.1kg, the nitrogen of fertilizing method of the present invention, phosphorus, potassium reduce discharging 68.4%, 36.5% and 32.7% respectively relatively, have reached desirable effect.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (9)
1. reduce a fertilizing method for Rice Cropping blowdown, it is characterized in that comprising following operating procedure:
(1) determine optimum fertilizing amount;
(2) apply base fertilizer: adopt fertilizer and chemical fertilizer to mix and use, applying nitrogen is 35~45% of nitrogen total amount, apply phosphorus element for 90~95% of phosphorus element total amount, apply potassium element for 25~35% of potassium element total amount, wherein nitrogen is all provided by fertilizer, fertilizer provides not enough phosphorus element, potassium is plain is supplemented by phosphate fertilizer, potash fertilizer, and described fertilizer and chemical fertilizer evenly impose on rice field, then the tillage method that adopts fertilizer deep ploughing to bury;
(3) fetilizer for tillering: fetilizer for tillering applies nitrogenous fertilizer for the first time, applying nitrogen is 30~40% of nitrogen total amount; Fetilizer for tillering applies nitrogenous fertilizer and potash fertilizer for the second time, apply nitrogen and be nitrogen total amount 10~20%, apply potassium element for 35~45% of potassium element total amount, the mode that described nitrogenous fertilizer, potash fertilizer adopt field to shed;
(4) ear manuer: apply nitrogenous fertilizer, potash fertilizer and phosphate fertilizer, applying nitrogen is 5~10% of nitrogen total amount; Apply phosphorus element for 5~10% of phosphorus element total amount; Apply potassium element for 20~30% of potassium element total amount, described nitrogenous fertilizer, potash fertilizer and phosphate fertilizer adopt the mode of foliage-spray.
2. the fertilizing method of minimizing Rice Cropping according to claim 1 blowdown, is characterized in that: the described fertilizer of step (2) refers to the farmyard manure of composting by fermentation; Described nitrogenous fertilizer is urea or carbon ammonium; Described phosphate fertilizer is fused calcium magnesium phosphate; Described potash fertilizer is potassium chloride.
3. the fertilizing method of minimizing Rice Cropping according to claim 1 blowdown, is characterized in that: the fertilization depth that applies base fertilizer described in step (2) is apart from soil surface 15~20cm.
4. the fertilizing method of minimizing Rice Cropping according to claim 1 blowdown, is characterized in that: the sowing amount of the described fertilizer of step (2) be take and applied nitrogen as 35~45% of nitrogen total amount.
5. the fertilizing method of minimizing Rice Cropping according to claim 1 blowdown, is characterized in that: described in step (3), using for the first time fetilizer for tillering period is that rice shoot enters 5~7d behind field, for the second time fetilizer for tillering use period for fetilizer for tillering for the first time use after 9~11d; Fetilizer for tillering topdresses in soil surface or field face water.
6. the fertilizing method of minimizing Rice Cropping according to claim 1 blowdown, it is characterized in that: the described application stage of panicle fertilizer of step (4) starts differentiation to the time of heading from young fringe, early rice is 27~30 days, and semilate rice is 35~40 days, and late rice is 42~47 days.
7. the fertilizing method of minimizing Rice Cropping according to claim 1 blowdown, is characterized in that: the described nitrogenous fertilizer of step (4) is urea or carbon ammonium; Described phosphate fertilizer is potassium dihydrogen phosphate; Described potash fertilizer is potassium chloride.
8. the fertilizing method of minimizing Rice Cropping according to claim 1 blowdown, is characterized in that: after the mode of the foliage-spray that step (4) is described refers to nitrogenous fertilizer, potash fertilizer and phosphate fertilizer to be watered, spray in blade face, spray concentration is 0.8~1%.
9. the application in controlling agricultural pollution according to the fertilizing method of the minimizing Rice Cropping blowdown described in claim 1~8 any one.
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CN109076762A (en) * | 2018-08-16 | 2018-12-25 | 吉林省农业科学院 | The method of the fertilizing method and rice cultivation of cold ground total straw returning to the field |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105409418A (en) * | 2015-11-30 | 2016-03-23 | 中国科学院亚热带农业生态研究所 | Amount-decreased chemical fertilizer deep application method based on reducing rice field nitrogen and phosphor non-point source pollution |
CN105409418B (en) * | 2015-11-30 | 2018-04-10 | 中国科学院亚热带农业生态研究所 | A kind of Reducing amount of chemical fertilizer applied deep fertilizing method based on reduction rice field nitrogen, phosphorus pollution of area source |
CN106797745A (en) * | 2017-01-11 | 2017-06-06 | 四川邡牌种业有限公司 | A kind of paddy rice intelligence precisely fertilizing method high |
CN109076762A (en) * | 2018-08-16 | 2018-12-25 | 吉林省农业科学院 | The method of the fertilizing method and rice cultivation of cold ground total straw returning to the field |
CN109076762B (en) * | 2018-08-16 | 2021-05-28 | 吉林省农业科学院 | Fertilizing method for returning total straws to field in cold region and method for planting rice |
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Application publication date: 20141119 |