Method for quickly modifying severe soda alkali-saline soil

A technology of soda saline-alkali land and saline-alkali soil, which is applied in the fields of soil preparation, agriculture, application, etc. It can solve the problems of difficult infiltration of soil moisture, restriction of soil improvement, and reduction of improvement effect, so as to promote soil moisture infiltration, facilitate field operation, The effect of less investment

Inactive Publication Date: 2013-05-01
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention aims to solve the problem that soil clay particles disperse with water, block soil pores, make it difficult for soil moisture to infiltrate into the de-plowed layer, limit soil improvement and lead to a decrease in improvement effect, and provide a rapid improvement method for severe soda saline-alkali soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0010] Specific implementation mode one: a kind of severe soda saline-alkaline soil rapid improvement method of the present implementation mode is realized according to the following steps:

[0011] One, select soil chisel type subsoiler and subsoiling shovel to carry out grid subsoiling to severe soda saline-alkali land, form the soil condition that is conducive to water and salt infiltration downward after subsoiling; Wherein, described grid subsoiling method is: First carry out subsoiling longitudinally along the heavy soda saline-alkali land, and then carry out subsoiling horizontally to form an equidistant grid, wherein the depth of subsoiling is 60cm-80cm, and the side length of the grid is 65cm;

[0012] 2. In the autumn of the year before reclamation or in the spring of the current year, determine the application amount of gypsum modifier according to the pH value of the plow layer soil in severe soda saline-alkali land, and then spread the gypsum modifier evenly on the...

specific Embodiment approach 2

[0014] Embodiment 2: This embodiment is different from Embodiment 1 in that: the number of subsoiling shovels in step 1 is 3. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0015] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: in step one, the subsoiling shovel is 9cm wide, and the subsoiling shovel is 65cm apart. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a method for quickly modifying severe soda alkali-saline soil. The invention provides the method for quickly modifying the severe soda alkali-saline soil in order to solve the problem that the modifying effect is lowered as soil clay particles are scattered when the soil clay particles encounter water, soil water cannot permeate below the tillage layer and be separated from the tillage layer due to the blockage of soil pores, and soil modification is limited. The method for quickly improving the severe soda alkali-saline soil comprises the following steps of: 1, deeply loosening severe soda alkali-saline land in a grid way so as to form deeply loosened soil conditions which are favorable to the downward infiltration of soil water and salt; 2, determining the use quantity of a gypsum modifier according to the pH value of the soil in the tillage layer of the severe soda alkali-saline land, and then uniformly scattering the gypsum modifier on the surface of the deeply loosened severe soda alkali-saline soil; and 3, mixing the gypsum modifier within the 20 cm soil layer of the severe soda alkali-saline land by mechanical rotary tillage. The method belongs to the technical field of severe soil modification.

Description

technical field [0001] The invention relates to a rapid improvement method for severe soda saline-alkali soil, and belongs to the technical field of poor-quality soil improvement. Background technique [0002] Soda saline-alkali soil is a typical agricultural barrier soil, the soil salinity is mainly sodium carbonate and sodium bicarbonate, the soil alkalization degree is greater than 15%, and the alkalization degree is more than 30% is defined as severe soda saline-alkali soil. Due to the excessive sodium ions, the physical and chemical properties of the soil deteriorate, affect water infiltration, and affect the growth and development of crops through ion toxicity, osmotic stress, and limited nutrient availability. The emergence of crops in severe soda saline-alkali soil is difficult, the growth is inhibited, and it is difficult to obtain normal yield without improvement. Therefore, how to improve soda saline-alkali soil is the first problem to be solved in agricultural p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/00
Inventor 王志春杨帆迟春明赵长巍徐璐安丰华王云贺
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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