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Soil improvement agent for promoting sandy soil to form granular structures and using method thereof

A technology of soil improver and aggregate structure, which is applied in the field of soil improver to promote the formation of aggregate structure in sandy soil. Implement, improve soil physical properties, increase water retention effect

Active Publication Date: 2017-04-05
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low fertility level and poor water and fertilizer retention are the main reasons for the low productivity of arable sandy land
To control the low fertility of sandy land and solve the problem of water and fertilizer retention, the main problem is how to improve the soil structure and increase the content of soil aggregates

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Application method: Add 20kg of attapulgite, 1kg of polyacrylamide, 2kg of straw, and 0.15kg of urea to 1 ton of soil to determine the amount of addition. Spread the attapulgite evenly on the surface. In addition, crush the crops when they are harvested in the early stage , spread evenly on the surface, and then sprinkle some nitrogen fertilizer (such as urea, etc.), dissolve the required polyacrylamide in water, and then irrigate it into the field, and finally make it fully mixed with the cultivated soil through a rotary tiller, and control irrigation Control the soil moisture content at 80% of the field water capacity. Anionic polyacrylamide has a molecular weight of 3-6 million and a degree of hydrolysis of 10-30%. Apply 200-300kg / mu of straw, and add nitrogen fertilizers such as urea and ammonium bicarbonate according to the C / N ratio of 20-25:1. Attapulgite is ultra-fine 400 mesh.

[0014] The present invention mainly uses attapulgite and anionic polyacrylamide t...

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Abstract

The invention belongs to sandy soil improvement techniques, and particularly relates to a soil improvement agent for promoting sandy soil to form granular structures and a using method thereof. The using method of the soil improvement agent for promoting the sandy soil to form the granular structures comprises the steps that the mixture of attapulgite and anionic polyacrylamide is added into the sandy soil and fully mixed with the plough layer, and then certain straw and a small amount of nitrogen fertilizer are added. According to the soil improvement agent for promoting the sandy soil to form the granular structures and the using method thereof, soil structures in the sandy soil can be improved, formation of soil aggregates is mainly promoted, the physical property of the soil is improved, the water retention capacity, the fertilizer retaining capacity and the ventilation capacity of the soil are improved, and the soil is more beneficial to growth of crops.

Description

technical field [0001] The invention belongs to sandy soil improvement technology, and specifically refers to a soil conditioner for promoting the formation of aggregate structure in sandy soil and its application method. Background technique [0002] For a long time, my country's desertification has been very serious, and there are a large number of deserts and sandy lands distributed throughout the country. Soil desertification reduces the area of ​​cultivated land and seriously affects land productivity, which leads to the reduction of agricultural and animal husbandry output and causes huge losses. With the development of urbanization, the pressure on my country's cultivated land has risen sharply, and food security is the basis for sustainable development. It is of great practical significance to improve low- and medium-yield soils and develop reserve cultivated land resources. [0003] The soil in the vast sandy area is mainly sandy soil, which is characterized by poo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K101/00
CPCC09K17/40C09K2101/00
Inventor 吕贻忠陈亚军闫旭东张宏飞吴晓光李丽君宋明元郝思铭
Owner CHINA AGRI UNIV
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