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Crop special-purposed composite fertilizer application method

A technology of compound fertilizer and application method, which is applied in the field of agriculture, can solve problems such as insufficient potassium fertilizer usage and low fertilizer utilization rate, and achieve the effects of saving costs, realizing high-efficiency utilization, and maintaining the continuous supply capacity of soil

Inactive Publication Date: 2017-02-15
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, with the sharp increase in the amount of chemical fertilizers in my country, a large amount of soil phosphorus has accumulated, and the problem of insufficient potassium fertilizers is gradually being alleviated. The traditional compound fertilizer formula will inevitably lead to low fertilizer utilization.

Method used

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  • Crop special-purposed composite fertilizer application method
  • Crop special-purposed composite fertilizer application method
  • Crop special-purposed composite fertilizer application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In this example, winter wheat in the Huang-Huai-Hai Plain and the Loess Plateau are taken as examples. According to the local environmental conditions and the statistical data of local winter wheat production in 2005-2010, the target yields of winter wheat in the Huang-Huai-Hai Plain and the Loess Plateau are 7355kg / hm respectively. 2 and 5614kg / hm 2 , the potassium requirements of 100kg grain are 2.69kg and 2.63kg respectively.

[0042] The straw yields of winter wheat in the Huang-Huai-Hai Plain and the actual field survey of the Loess Plateau were 7804kg / hm 2 and 7121kg / hm 2 , the straw returning rates were 71.5% and 100%, respectively, and the mass of potassium in 100kg straw was 1.92kg and 1.71kg respectively.

[0043] The available potassium content in the Huang-Huai-Hai Plain and the Loess Plateau is 104 mg / kg and 167 mg / kg. Based on the 100 mg / kg soil available potassium, the correction coefficients for potassium fertilizer application in the Huang-Huai-Hai wi...

Embodiment 2

[0085] In this embodiment, taking spring sown corn in Northeast China and summer sown corn in Huanghuaihai Plain as examples, according to the local environmental conditions and the statistical data of local corn production in 2005-2010, the target yields of spring sown corn in Northeast China and summer sown corn in Huanghuaihai Plain are respectively 9772kg / hm 2 and 9426kg / hm 2 , the potassium requirements of 100kg grain are 1.69kg and 1.80kg respectively.

[0086] The straw yields of spring-sown corn in Northeast China and summer-sown corn in Huanghuai-Hai Plain are 9401kg / hm 2 and 9068kg / hm 2 . The straw return rates were 36.7% and 85.0%. The masses of potassium in 100kg of straw are 1.60kg and 1.68kg respectively.

[0087] The content of available potassium in spring-sown corn in Northeast China and summer-sown corn in Huang-Huai-Hai Plain is 133 mg / kg and 104 mg / kg. Based on soil available potassium 100 mg / kg, the correction coefficients of potassium fertilizer app...

Embodiment 3

[0130] In this example, the late rice in the double-single-cropping rice area in the Jiangnan hilly plain is taken as an example. According to the local environmental conditions and the statistical data of local rice production in 2005-2010, the target output of late rice in the double-single-cropping rice area in the Jiangnan hilly plain is 7790kg / hm 2 , The potassium requirement of 100kg grain is 2.66kg.

[0131] The straw yield of the late rice investigation in the double-single cropping rice area in the Jiangnan hilly plain is 7194kg / hm 2 , the rate of straw returning to the field is 68.7%, and the mass of potassium in 100kg of straw is 2.66kg.

[0132] The content of available potassium in the double-single rice-cropping area of ​​the Jiangnan hilly plain is 77.0 mg / kg. Based on the soil available potassium 100 mg / kg, the correction coefficient of potassium fertilizer application in the double-single rice-growing area of ​​the Jiangnan hilly plain is 1.30.

[0133] The m...

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Abstract

The invention relates to a crop special-purposed composite fertilizer application method. The method comprises the step that a composite fertilizer is applied in a field in a crop growth period. The composite fertilizer comprises a nitrogen fertilizer, a phosphorus fertilizer and a potassium fertilizer. The method is characterized in that a potassium fertilizer application amount in unit area of field is as shown in the formula. In the formula, CorpK-out is the mass of potassium brought out of the field when the crop in the unit area of field is harvested. EnvK-in is the mass of potassium entering the unit area of field from the environment. RatK-out is potassium loss rate of the unit area of field. alpha is a potassium fertilizer application correction coefficient, wherein alpha=standard available potassium content / field soil available potassium content. With the above technical scheme, the fertilization amount recommended by the invention assists in providing supplementation in nutrient absorption during a crop growth period, and assists in providing supplementation for soil nutrient loss during the crop growth period. Therefore, soil nutrient balance can be maintained, soil continuously supplying capacity is maintained, and crop high and stable yield can be ensured.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a method for applying a crop-specific compound fertilizer. Background technique [0002] Crop-specific compound fertilizers are fertilizers containing at least two macroelements, which are developed according to agronomic factors such as crop nutrient requirements and soil nutrient supply capacity, and are processed and produced through appropriate chemical processes. Compared with simple fertilizers, it has the advantages of high nutrient content, reasonable NPK ratio, less auxiliary components, good physical properties, special fertilizer, and strong pertinence. Stable, high-yield, and high-quality crops play a very important role. The development of compound fertilizer formula is the core technology in the circular chain of crop-specific compound fertilizer industry. In addition to considering the industrial production process, it also considers meeting the needs of agricultural pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00
CPCA01C21/005
Inventor 赵秉强车升国沈兵林治安袁亮李燕婷李伟杨相东李娟
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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