CN111222099A - Estimation method for nitrogen basic fertilizer supply amount of cotton field soil by drip irrigation under film - Google Patents
Estimation method for nitrogen basic fertilizer supply amount of cotton field soil by drip irrigation under film Download PDFInfo
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- CN111222099A CN111222099A CN202010099858.3A CN202010099858A CN111222099A CN 111222099 A CN111222099 A CN 111222099A CN 202010099858 A CN202010099858 A CN 202010099858A CN 111222099 A CN111222099 A CN 111222099A
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- 239000002689 soil Substances 0.000 title claims abstract description 57
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000003337 fertilizer Substances 0.000 title claims abstract description 33
- 229920000742 Cotton Polymers 0.000 title claims abstract description 30
- 238000003973 irrigation Methods 0.000 title claims abstract description 26
- 230000002262 irrigation Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 235000015097 nutrients Nutrition 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims description 9
- 238000007605 air drying Methods 0.000 claims description 3
- 239000002362 mulch Substances 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 241000219146 Gossypium Species 0.000 description 21
- 238000002474 experimental method Methods 0.000 description 5
- DARPYRSDRJYGIF-PTNGSMBKSA-N (Z)-3-ethoxy-2-naphthalen-2-ylsulfonylprop-2-enenitrile Chemical compound C1=CC=CC2=CC(S(=O)(=O)C(\C#N)=C/OCC)=CC=C21 DARPYRSDRJYGIF-PTNGSMBKSA-N 0.000 description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 4
- 238000009331 sowing Methods 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 235000012343 cottonseed oil Nutrition 0.000 description 2
- 230000004720 fertilization Effects 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000618 nitrogen fertilizer Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/18—Complex mathematical operations for evaluating statistical data, e.g. average values, frequency distributions, probability functions, regression analysis
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- 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
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- Fertilizing (AREA)
Abstract
An estimation method of the nitrogen basic fertilizer supply amount of cotton field soil by drip irrigation under a film relates to an estimation method of the nitrogen basic fertilizer supply amount of the soil. The invention aims to solve the technical problem that the existing method for obtaining the basic fertilizer supply amount of soil is long in time-consuming period. The method comprises the following steps: firstly, measuring and calculating 1hm2The total amount of nutrients in a soil layer with the area of 0.1-40 cm; secondly, calculating the water fracture amount w of the soil capillaryRC(ii) a Thirdly, calculating a quick-acting moisture interval coefficient k: fourthly, irrigation is needed in the growth period of the cotton field drip irrigation under the film, the irrigation frequency in the growth period is determined and is expressed by N, and then the soil foundation fertilizer supply amount B is calculated according to the formula:
Description
Technical Field
The invention relates to an estimation method of soil nitrogen basic fertilizer supply amount.
Background
The soil base fertilizer supply is one of important parameters for calculating the fertilizer utilization rate, and refers to the amount of nutrients which the soil supplies to the crops to absorb in the season without fertilization or the amount of nutrients which the crops absorb from the soil in the season without fertilization. In the process of obtaining the soil basic fertilizer supply amount by the traditional method, a field test is needed, crops are planted, and after a complete growing season, the amount of nutrients absorbed from the soil after the crops are harvested is measured, namely the soil basic fertilizer supply amount. The traditional method has the defect of long time consumption because the traditional method needs to go through a complete crop growing season.
Disclosure of Invention
The invention aims to solve the technical problem that the conventional method for obtaining the soil basic fertilizer supply amount is long in time-consuming period, and provides a method for estimating the soil nitrogen basic fertilizer supply amount of cotton fields by drip irrigation under a film.
The method for estimating the nitrogen basic fertilizer supply amount of the cotton field soil by drip irrigation under the mulch is carried out according to the following steps:
firstly, sampling cotton field soil sample with a sampling depth of 0.1-40cm, air-drying after sampling, sieving with a 1mm sieve, and measuring the content of nutrient nitrogen in the soil, wherein the unit is mg kg, and is expressed by f-1Calculate 1hm2The total amount of nutrients in soil layer of 0.1-40cm in area is expressed by F and the unit is kg hm–2The calculation formula is as follows:
secondly, measuring the field water capacity and the saturated water content of the cotton field soil with the depth of 0.1-40cm, and respectively using wFCAnd wsThen calculating the water fracture amount w of the soil capillaryRCThe calculation formula is as follows:
thirdly, calculating a quick-acting moisture interval coefficient k:
fourthly, irrigation is needed in the growth period of the cotton field by drip irrigation under the film, the irrigation frequency in the growth period is determined and is expressed by N, and the soil base fertilizer supply amount B is expressed in kg hm-1The calculation formula is as follows:
Compared with the traditional method, the method for estimating the N element basic fertilizer supply amount of the cotton field soil by drip irrigation under the film has the characteristics of short period and high efficiency. The error rate is 3.56% -4.16%.
Detailed Description
The technical solution of the present invention is not limited to the following specific embodiments, but includes any combination of the specific embodiments.
The first embodiment is as follows: in the embodiment, the method for estimating the nitrogen basic fertilizer supply amount of the cotton field soil by drip irrigation under the mulch is carried out according to the following steps:
firstly, sampling cotton field soil sample with a sampling depth of 0.1-40cm, air-drying after sampling, sieving with a 1mm sieve, and measuring the content of nutrient nitrogen in the soil, wherein the unit is mg kg, and is expressed by f-1Calculate 1hm2The total amount of nutrients in soil layer of 0.1-40cm in area is expressed by F and the unit is kg hm–2The calculation formula is as follows:
secondly, measuring the field water capacity and the saturated water content of the cotton field soil with the depth of 0.1-40cm, and respectively using wFCAnd wsThen calculating the water fracture amount w of the soil capillaryRCThe calculation formula is as follows:
thirdly, calculating a quick-acting moisture interval coefficient k:
fourthly, irrigation is needed in the growth period of the cotton field by drip irrigation under the film, the irrigation frequency in the growth period is determined and is expressed by N, and the soil base fertilizer supply amount B is expressed in kg hm-1The calculation formula is as follows:
The following experiments are adopted to verify the effect of the invention:
experiment one:
the soil texture is loam, the surface layer 40cm soil volume weight is 1.35g cm-315.42g kg of organic matter content in soil-15.2g kg of total nitrogen-160.3mg kg of alkaline hydrolyzable nitrogen-1Quick-acting phosphorus 15.6mg kg-1Quick-acting potassium 167.9mg kg-1Field capacity (w)FC) 251.08g kg-1Saturated water content (w)s) 336.9g kg-1. Irrigating for 8 times all year.
The method for estimating the nitrogen basic fertilizer supply amount of the cotton field soil by drip irrigation under the film comprises the following steps:
the traditional method for obtaining the nitrogen fertilizer supply amount of the soil comprises the following steps:
firstly, soil preparation, namely deeply ploughing and deeply loosening with the depth of 40 cm;
selecting plump and excellent cotton seeds;
thirdly, sowing, namely a film 6-row, 66cm +10cm machine cotton picking mode, wherein the sowing density is 24 thousand-plant hm-2。
④, field management, namely irrigating 8 times after the cotton seedlings emerge in the whole growth period, irrigating head water in the middle ten days of 6 months, irrigating second water at the bottom of 6 months, irrigating 6 water in 7-8 months, irrigating once every 7-8 days, and irrigating with the fixed amount of 450m3hm-2. The fertilizer dosage is as follows: p2O515 kg/mu, K2O8.5kg/mu; 30% of base application, and the rest is applied with water drops. Two times of chemical regulation and control are expected in the whole province, and the mepiquat chloride is sprayed at the initial flowering stage by 27ghm-2Spraying mepiquat chloride 75.0g hm 1 week after topping-2。
fifthly, harvesting, wherein the yield of the seed cotton is 4896kg hm-2，
sixthly, the nitrogen absorption is measured to be 244.8kg hm-2Namely the soil nitrogen supply.
The N element base fertilizer supply amount quickly estimated by the experimental method is 253.5kg hm-2The actual base fertilizer supply is 244.8kg hm-2The difference between the two is 8.7kg hm-2The error rate was 3.56%.
Experiment two:
the soil texture is sandy loam, the surface layer 40cm soil volume weight is 1.40g cm-3The organic matter content of the soil is 10.26g kg-13.9g kg of total nitrogen-142.6mg kg of alkaline hydrolyzable nitrogen-1Quick-acting phosphorus 12.8mg kg-1103.3mg/kg of quick-acting potassium and 235.55g kg of field water capacity-1Saturated water content (w)s) 336.4g kg-1. Irrigating for 8 times all year.
The method for estimating the nitrogen basic fertilizer supply amount of the cotton field soil by drip irrigation under the film comprises the following steps:
the traditional method for obtaining the nitrogen fertilizer supply amount of the soil comprises the following steps:
firstly, soil preparation, namely deeply ploughing and deeply loosening with the depth of 40 cm;
selecting plump and excellent cotton seeds;
thirdly, sowing, namely a film 6-row, 66cm +10cm machine cotton picking mode, wherein the sowing density is 24 thousand-plant hm-2。
④, field management, namely irrigating 8 times after the cotton seedlings emerge in the whole growth period, irrigating head water in the middle ten days of 6 months, irrigating second water at the bottom of 6 months, irrigating 6 water in 7-8 months, irrigating once every 7-8 days, and irrigating with the fixed amount of 450m3hm-2. The fertilizer dosage is as follows: p2O515 kg/mu, K2O8.5kg/mu; 30% of base application, and the rest is applied with water drops. Two times of chemical regulation and control are expected in the whole province, and the mepiquat chloride is sprayed at the initial flowering stage by 27ghm-2Spraying mepiquat chloride 75.0g hm 1 week after topping-2。
harvesting with seed cotton yield of 4165.5kg hm-2，
sixthly, the nitrogen absorption is measured to be 170.8kg hm-2Namely the soil nitrogen supply.
The N element base fertilizer supply amount quickly estimated by the experimental method is 177.9kg hm-2The actual base fertilizer supply is 170.8kg hm-2The difference between the two is 7.1kg hm-2The error rate was 4.16%.
Claims (1)
1. The method for estimating the nitrogen base fertilizer supply amount of the cotton field soil by drip irrigation under the mulch is characterized by comprising the following steps of:
firstly, sampling cotton field soil sample with a sampling depth of 0.1-40cm, air-drying after sampling, sieving with a 1mm sieve, and measuring the content of nutrient nitrogen in the soil, wherein the unit is mg kg, and is expressed by f-1Calculate 1hm2The total amount of nutrients in soil layer of 0.1-40cm in area is expressed by F and the unit is kg hm–2The calculation formula is as follows:
secondly, measuring the field water capacity and the saturated water content of the cotton field soil with the depth of 0.1-40cm, and respectively using wFCAnd wsThen calculating the water fracture amount w of the soil capillaryRCThe calculation formula is as follows:
thirdly, calculating a quick-acting moisture interval coefficient k:
fourthly, irrigation is needed in the growth period of the cotton field by drip irrigation under the film, the irrigation frequency in the growth period is determined and is expressed by N, and the soil base fertilizer supply amount B is expressed in kg hm-1The calculation formula is as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010099858.3A CN111222099A (en) | 2020-02-18 | 2020-02-18 | Estimation method for nitrogen basic fertilizer supply amount of cotton field soil by drip irrigation under film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010099858.3A CN111222099A (en) | 2020-02-18 | 2020-02-18 | Estimation method for nitrogen basic fertilizer supply amount of cotton field soil by drip irrigation under film |
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| CN111222099A true CN111222099A (en) | 2020-06-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113040015A (en) * | 2021-04-15 | 2021-06-29 | 塔里木大学 | Method for estimating relative yield of cotton drip irrigation under film based on field water capacity |
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2020
- 2020-02-18 CN CN202010099858.3A patent/CN111222099A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113040015A (en) * | 2021-04-15 | 2021-06-29 | 塔里木大学 | Method for estimating relative yield of cotton drip irrigation under film based on field water capacity |
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Application publication date: 20200602 |