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Method and system for controlling salt of saline-alkali soil

A technology of saline-alkali land and mulch, applied in land preparation methods, plant protection covers, agricultural machinery and implements, etc., can solve the problems of strong soil evaporation, low crop emergence rate, return of salt on the soil surface, etc., to achieve a good soil ecological environment, improve crops Yield, the effect of accelerated downward rinsing

Active Publication Date: 2012-07-11
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI +2
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Problems solved by technology

[0011] Although the above two technologies have a certain effect on improving saline-alkali land, the mulching film technology often has salt accumulation in the bare area between the film hole and the film, which affects the emergence and growth of crops, making the emergence rate of crops lower and slower growth. Slow; due to the lack of surface covering and subsurface interlayer treatment in deep tillage technology, the soil evaporates strongly, and the soil surface obviously returns to salt, which also seriously inhibits the emergence rate and growth rate of crops, resulting in low crop yields

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[0038] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] It can be seen from the above that the formation of saline-alkali soil is due to the movement of water and salt. The mineralized groundwater rises along the soil capillary, and evaporates the soil surface and soil above its critical depth, so that the salt originally dissolved in the groundwater evaporates with the water on the surface. And gradually accumulate.

[0040] Straw deep burial, as a technology for soil fertilization, has gradually been recognized by experts and farmers. Therefore, in this invention, in view of the characteristics of salt accumulation caused by mineralized groundwater rising and evaporating along the soil capillary, it is proposed to use plastic film to improve the surface interface to suppress evaporatio...

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Abstract

The invention discloses a method and system for controlling salt of saline-alkali soil. The method comprises partitioning an area to be planted to a crop root system dense layer, a spacer layer for controlling salt, and a subsoil layer; filling the spacer layer for controlling salt, forming the area to be planted, and irrigating the formed area to be planted; fertilizing a base fertilizer, and laying a plastic ground film on the ground before sowing corps; and holing the ground film and sowing the crops. The method provided by the invention can improve emergency rate and yield of the crops.

Description

technical field [0001] The invention relates to soil cultivation technology, in particular to a method for controlling and suppressing salt in saline-alkali soil and a system for controlling and suppressing salt in saline-alkali soil. Background technique [0002] Saline-alkali soil is a type of soil where crops are difficult to grow when the concentration of soluble salts or substitutable sodium ions in the soil reaches a certain level. Water and salt movement is an important factor in the formation of saline-alkali soil, that is, salt comes with water and goes away with water. That is to say, because the soil parent material and groundwater in saline-alkaline areas often contain a certain amount of salt, when the groundwater level is close to the surface and the surface area is relatively dry, the groundwater that rises to the surface under the capillary action of the soil evaporates and remains The salt dissolved in the groundwater accumulates over time, which gradually i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01G13/02
Inventor 逄焕成李玉义任天志靳存旺李二珍杨柳青魏由庆严慧峻王婧李华赵永敢
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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