Method for reducing nitrogen fertilizer in wheat-corn rotation system

A nitrogen fertilizer and corn technology, applied in the field of soil nitrogen nutrient management, can solve the problems of waste of resources, environment, damage, etc., and achieve the effects of alleviating pollution, reducing the amount of nitrogen fertilizer application, and making materials extremely easy.

Active Publication Date: 2014-04-30
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims at the practical problems of excessive application of nitrogen fertilizer in the production process of the current wheat-corn rotation system, thereby causing waste of resources and e...

Method used

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  • Method for reducing nitrogen fertilizer in wheat-corn rotation system
  • Method for reducing nitrogen fertilizer in wheat-corn rotation system
  • Method for reducing nitrogen fertilizer in wheat-corn rotation system

Examples

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Embodiment 1

[0025] Step 1 Manganese-zinc trace element fertilizer seed dressing: Dissolve zinc sulfate and manganese sulfate in water to make a dilute solution, combine with seed disinfection and spray on the surface of the seeds, stir while spraying, so that each seed is evenly covered with the solution, and the spraying amount is 100mL / kg seeds, the amount of zinc sulfate used is 2.5g / kg seeds, the amount of manganese sulfate used is 1.0g / kg seeds, and finally the seeds can be sown after being spread out to dry;

[0026] Step 2 Nitrogen fertilizer is applied once, and the application amount is 13.3kg / 667m2 in terms of pure nitrogen 2 / season, add dicyandiamide and coated controlled-release nitrogen fertilizer at the same time, the addition of dicyandiamide is 1.5wt% of the pure nitrogen amount of nitrogen fertilizer applied, and the added amount of coated controlled-release nitrogen fertilizer is 1% of the pure nitrogen amount of applied nitrogen fertilizer 20wt%, the release period o...

Embodiment 2

[0031] Step 1 Manganese-zinc trace element fertilizer seed dressing: Dissolve zinc sulfate and manganese sulfate in water to make a dilute solution, combine with seed disinfection and spray on the surface of the seeds, stir while spraying, so that each seed is evenly covered with the solution, and the spraying amount is 100mL / kg seeds, the amount of zinc sulfate used is 3.0g / kg seeds, the amount of manganese sulfate used is 1.5g / kg seeds, and finally the seeds are spread out and dried to sow;

[0032] Step 2 Nitrogen fertilizer is applied once, and the application amount is 13.3kg / 667m2 in terms of pure nitrogen 2 / season, add dicyandiamide and coated controlled-release nitrogen fertilizer at the same time, the addition of dicyandiamide is 1.0wt% of the pure nitrogen amount of nitrogen fertilizer applied, and the added amount of coated controlled-release nitrogen fertilizer is 1% of the pure nitrogen amount of applied nitrogen fertilizer 30wt%, the release period of coated con...

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Abstract

The invention discloses a method for reducing a nitrogen fertilizer in a wheat-corn rotation system, belonging to the technical field of management of soil nitrogen nutrients. The method comprises the following steps: carrying out seed dressing on a Mn-Zn micronutrient fertilizer; adding a nitrification inhibitor and a coated controlled release nitrogen fertilizer when the nitrogen fertilizer is applied, and carrying out foliar topdressing of a boron fertilizer. By adopting the method, once fertilization of the nitrogen fertilizer in a wheat-corn planting system is achieved, the labor force is saved, materials are easily available, the operation process is simple, the fertilization method is simple and convenient, the cost is low, popularization is facilitated, and the application prospect is good. The application rate of the nitrogen fertilizer is obviously reduced, compared with the traditional fertilization in wheat and corn planting, the method has the advantage that the dosage of the nitrogen fertilizer is reduced by over 20%, loss of the nitrogen nutrients is obviously reduced, the pollution to water and an atmospheric environment is relieved, the environment risk is reduced, and the needs of agricultural sustainable development are satisfied.

Description

technical field [0001] The invention belongs to the technical field of soil nitrogen nutrient management, and in particular relates to a method for effectively reducing nitrogen fertilizer application in a wheat-corn rotation system. Background technique [0002] (1) Excessive application of nitrogen fertilizer in the wheat-corn rotation system not only wastes nitrogen fertilizer resources but also threatens the surrounding water environment [0003] Chemical fertilizers play an irreplaceable role in the high and stable yield of crops. The Food and Agriculture Organization of the United Nations (FAO) has statistically analyzed the results of long-term experiments in many countries, showing that chemical fertilizers account for more than 60% of crop yields. The effect of chemical fertilizers on crop production in my country is as high as 40%. At present, the intensity of chemical fertilizer use in my country's agricultural production process ranks first in the world, especia...

Claims

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Application Information

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IPC IPC(8): A01C1/06A01C21/00
Inventor 梁林洲沈仁芳董晓英
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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