Fertilizer applying method for reducing dry land planting pollution discharge by using mixed application of organic fertilizer and chemical fertilizer

A fertilization method and organic fertilizer technology, applied in fertilization methods, fertilization devices, fertilizer mixtures, etc., can solve the problems of excess soil salinity, accumulation, affecting the normal absorption and utilization of crops, and achieve the effect of improving fertilizer utilization and reducing environmental pollution.

Inactive Publication Date: 2014-11-19
HUNAN AGRICULTURAL UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

3. Because we only pay attention to the application of quick-acting nitrogen fertilizers, the supply of nutrients is unbalanced, affecting the normal absorption and utilization of crops, resulting in excess soil salt and accumulation
[0003] On the one hand, the pollution of the environment caused by the extensive use of chemical fertilizers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] At Liujia Station, Yujiang County, Yingtan City, Jiangxi Province, a plot with a certain slope was selected for plowing, and the area of ​​each experimental plot was 10×10m 2 , Dig a runoff collection pool with a length, width and depth of 150cm×100cm×80cm in a corner of the community. The runoff generated by the rain enters the runoff collection pond, and water samples are collected for analysis and determination. The crop grown is wheat. According to different fertilization methods, three different treatment groups were set up, which were 1 test group, 1 control group, and 1 blank group. The fertilization method of the experimental group is that organic fertilizers provide nitrogen, which accounts for 100% of the total fertilization amount, and the insufficient part of phosphorus and potassium provided by organic fertilizers is supplemented by chemical fertilizers; the fertilization method of the control group is all chemical fertilizers; the blank group does not app...

Embodiment 2

[0045] At Liujia Station, Yujiang County, Yingtan City, Jiangxi Province, a plot with a certain slope was selected for plowing, and the area of ​​each experimental plot was 10×10m 2 , Dig a runoff collection pool with a length, width and depth of 150cm×100cm×80cm in a corner of the community. The runoff generated by the rain enters the runoff collection pond, and water samples are collected for analysis and determination. The crop is corn. According to different fertilization methods, three different treatment groups were set up, which were 1 test group, 1 control group, and 1 blank group. The fertilization method of the experimental group is that organic fertilizers provide nitrogen, which accounts for 100% of the total fertilization amount, and the insufficient part of phosphorus and potassium provided by organic fertilizers is supplemented by chemical fertilizers; the fertilization method of the control group is all chemical fertilizers; the blank group does not apply any ...

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PUM

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Abstract

The invention belongs to the field of agricultural pollution control and discloses a high-benefit and low-pollution fertilizer applying method for reducing dry land planting pollution discharge by using mixed application of organic fertilizer and chemical fertilizer and an application of the method. The method comprises the following concrete steps: determining an optimum fertilizer applying amount; and applying base fertilizer and additional fertilizer alternately, wherein in the applied base fertilizer, the applied nitrogen is 100% of the total amount of nitrogen, the applied phosphorus is 85%-95% of the total amount of phosphorus, the applied potassium is 90%-95% of the total amount of potassium, the nitrogen is completely provided by the organic fertilizer, phosphorus and potassium which are insufficiently provided by the organic fertilizer are supplemented by phosphate fertilizer and potassium fertilizer, and the base fertilizer is applied in a manner of deep placement coverage; in the applied additional fertilizer, the rest of phosphate fertilizer and potassium fertilizer as the additional fertilizer are applied once in a manner of foliage spray. The method is capable of reducing the runoff loss of nitrogen by 60%-80%, the loss of phosphorus by 65%-85% and the loss of potassium by 35%-55% on the premise of not influencing the crop yield.

Description

technical field [0001] The invention belongs to the field of agricultural pollution control, and particularly relates to a high-efficiency, low-pollution fertilization method for reducing dryland planting sewage discharge by mixed application of organic fertilizer and chemical fertilizer and its application. Background technique [0002] As an important modern chemical input element, chemical fertilizer has played a great role in my country's agricultural production. At present, China has become the world's largest producer of chemical fertilizers, but also the world's largest consumer of chemical fertilizers. In the past 20 years, the amount of chemical fertilizers used in the country has increased from 25.9 million tons in 1990 to 51.08 million tons in 2007, accounting for 1 / 3 of the world's average consumption, and the amount is close to 400kg / hm 2 . However, the part of farmland nutrients used by plants in our country is very little every year. The utilization rate of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00C05G1/00
CPCY02P60/21
Inventor 吴根义佘磊龙雯琪李巧巧易湘琳
Owner HUNAN AGRICULTURAL UNIV
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