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Method for balanced fertilizer application through wheat-corn crop rotation straw returning to field

A technology of balanced fertilization and corn stalks, applied in fertilization methods, fertilization devices, grain cultivation, etc., can solve problems such as ambiguity of soil barrier factors, inability to scientifically manage fertilizer and water, etc., to reduce excess fertilization waste, reduce fertilization waste, and mix than reasonable effect

Active Publication Date: 2019-08-06
INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there are problems in the management technology of wheat and corn rotation planting in low- and medium-yield fields or hilly areas: the obstacle factors in the soil are unclear, and it is impossible to start with straw returning to the field to improve soil fertility. We can only follow the experience and cannot manage scientifically. fat water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for balanced fertilization by returning wheat-corn crop stalks to the field, comprising the following steps:

[0031] (1) After the corn is harvested, use the straw returning machine to crush the corn stalks into 1~10cm fragments and return them to the field. Wet soil is evenly sprinkled on the corn stalks, and the amount of decomposing agent and urea added is: decomposing agent 1kg / mu, urea 10kg / mu. Then spread 200kg of commercial organic fertilizer per mu, and return to the field after deep plowing. The commercial organic fertilizer is a commercial organic fertilizer that meets the requirements of the NY 525-2012 organic fertilizer standard.

[0032] (2) Use a rotary tiller to plow 25 to 30 cm deep to make the organic fertilizer more evenly decomposed. After deep plowing, level the ground, sow wheat with the seeder, and the wheat seeding rate is 10kg / mu. Measure the nitrogen, phosphorus and potassium fertilizer content of cultivated land soil, apply 15-15-...

Embodiment 2

[0037] A method for balanced fertilization by returning wheat-corn crop stalks to the field, comprising the following steps:

[0038](1) After the corn is harvested, use the straw returning machine to crush the corn stalks into 1~10cm fragments and return them to the field. Wet soil is evenly sprinkled on the corn stalks, and the amount of decomposing agent and urea added is: decomposing agent 1.5kg / mu, urea 12.5kg / mu. Then spread 200kg of commercial organic fertilizer per mu, and return to the field after deep plowing. The commercial organic fertilizer is a commercial organic fertilizer that meets the requirements of the NY 525-2012 organic fertilizer standard.

[0039] (2) Use a rotary tiller to plow 25 to 30 cm deep to make the organic fertilizer more evenly decomposed. After deep plowing, level the ground, sow wheat with a seeder at a rate of 12.5kg / mu. Measure the nitrogen, phosphorus and potassium fertilizer content of cultivated land soil, apply 15-15-15 compound fer...

Embodiment 3

[0044] A method for balanced fertilization by returning wheat-corn crop stalks to the field, comprising the following steps:

[0045] (1) After the corn is harvested, use the straw returning machine to crush the corn stalks into 1~10cm fragments and return them to the field. Wet soil is evenly sprinkled on the corn stalks, and the amount of decomposing agent and urea added is: decomposing agent 2kg / mu, urea 15kg / mu. Then spread 200kg of commercial organic fertilizer per mu, and return to the field after deep plowing. The commercial organic fertilizer is a commercial organic fertilizer that meets the requirements of the NY 525-2012 organic fertilizer standard.

[0046] (2) Use a rotary tiller to plow 25 to 30 cm deep to make the organic fertilizer more evenly decomposed. After deep plowing, level the ground, sow wheat with the seeder, and the wheat seeding rate is 15kg / mu. Measure the nitrogen, phosphorus and potassium fertilizer content of cultivated land soil, apply 15-15-...

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Abstract

The invention relates to a method for balanced fertilizer application through wheat-corn crop rotation straw returning to field, and belongs to the technical field of agricultural plantation and fertilizer application. Winter wheat-summer corn straw in the annual crop rotation period is all returned to field, the fertility of a cultivated land can be improved by decomposed part of the straw, the water holding capacity of the cultivated land can be improved by undecomposed part of the straw, and the fertilizer-water ratio is kept. By measuring soil, applying a fertilizer and sowing wheat seeds,the nutrient ratio is reasonable, unnecessary excessive fertilizer application waste is reduced, meanwhile the soil fertility is effectively improved, and the wheat yield is guaranteed. Urea topdressing is conducted in the elongation stage after wheat revives, and the soil carbon-nitrogen ratio of the straw and an organic fertilizer is balanced. By measuring soil, applying a fertilizer and sowingcorn seeds, a solid corn compound fertilizer is applied, and the corn yield is guaranteed. The organic fertilizer is additionally applied during straw turning to field, the soil physical structure can be greatly improved, and the reproduction capacity of the soil is improved. The fertilizer application total amount control and multi-stage management are realized and are effectively combined withcultivation and tillage measures, and the water-fertilizer balance, organic fertilizer-inorganic fertilizer balance and sustainable soil utilization of a soil-crop system are ensured.

Description

technical field [0001] The present invention relates to a method for balanced fertilization of wheat-corn rotation crop stalks returning to the field, in particular to a method for annual fertilization of water and fertilizer balance and organic fertilizer-inorganic fertilizer balance under the condition of returning all winter wheat-summer corn stalks to the field in medium and low-yield fields or hilly areas. It belongs to the technical field of agricultural planting and fertilization. Background technique [0002] Food security is a major issue for national development. The economic development and social stability of any country are based on food security. In my country, food safety is not only an economic problem, but also a social problem, and ensuring food safety is the basis and guarantee for realizing national security. With the development of the national economy and the improvement of the level of urbanization, the per capita food demand continues to increase. I...

Claims

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Application Information

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IPC IPC(8): A01G22/20A01C21/00
CPCA01C21/005A01C21/007A01G22/20
Inventor 郑福丽谭德水刘萍张柏松马征王学君
Owner INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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