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Method for improving saline alkali soil by utilizing crushed crop straws

A saline-alkali soil and crop straw technology, applied in the restoration of polluted soil, soil preparation methods, soil conditioning materials, etc., can solve the risk of increasing the input of other foreign elements, accelerate the evaporation of soil water, and aggravate the problem of water loss, etc. Achieve the effects of saving labor and economic costs, increasing soil porosity and microbial activity, and saving manpower

Pending Publication Date: 2021-07-13
SHIHEZI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] (1) The existing method of improving saline-alkali soil by using crop straw not only has a huge workload but also increases the risk of inputting other foreign elements;
[0012] (2) Cut the straw directly to a length of 4-10cm, and return it to the field with a rotary tiller, which will exacerbate the problem of water loss in the original soil and accelerate the evaporation of soil water
For example, shortening the depth of returning to the field with straw interlayers or not binding the straw may cause rapid evaporation of water in the straw layer and the accumulation of salt in the straw layer; or straw as a modifier reduces the input of a certain element, which has an impact on the ion exchange in the soil

Method used

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  • Method for improving saline alkali soil by utilizing crushed crop straws
  • Method for improving saline alkali soil by utilizing crushed crop straws
  • Method for improving saline alkali soil by utilizing crushed crop straws

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The method for improving saline-alkali soil by crushing crop stalks provided by the embodiments of the present invention specifically includes the following steps:

[0057] 1. Collect the cotton stalks after the crops mature.

[0058] 2. The straw is crushed, and the crushed length is 1mm.

[0059] 3. Determination of the background value of soil samples: Collect soil samples in the saline-alkali land (wasteland) of the 147 regiment in Shihezi City, Xinjiang, air-dry the brought back soil samples, sieve, and measure the basic physical and chemical properties of the soil.

[0060] 4. Return the crushed straw to the saline-alkali land, and mix the straw with the 0-20cm soil layer of the saline-alkali land.

[0061] 5. Sampling the test site every 7 days to measure the soil index.

[0062] 6. The saline-alkali land of 147 groups tested is light loam, and the physical and chemical properties of the soil foundation are shown in Table 1.

[0063] Table 1 Basic physical and...

Embodiment 2

[0072] The method for improving saline-alkali soil by crushing crop stalks provided by the embodiments of the present invention specifically includes the following steps:

[0073] 1. Collect the mature corn stalks.

[0074] 2. The straw is crushed, and the crushed length is 1mm.

[0075] 3. Determination of the background value of soil samples: Collect soil samples in the saline-alkali land (wasteland) of the 147 regiment in Shihezi City, Xinjiang, and air-dry the brought back soil samples, sieve, and measure the basic physical and chemical properties of the soil (Table 1).

[0076] 4. Return the crushed straw to the saline-alkali land, and mix the straw with the 0-20cm soil layer of the saline-alkali land.

[0077] 5. Sampling the test site every 7 days to measure the soil index.

[0078] 6. Determination

[0079] (1) Soil conductivity: Measured with a conductivity meter.

[0080] (2) Soil pH value: measured with a pH meter.

[0081] (3) Soil aggregates: measured by dry ...

Embodiment 3

[0085] The method for improving saline-alkali soil by crushing crop stalks provided by the embodiments of the present invention specifically includes the following steps:

[0086] 1. Collect the rapeseed stalks after the crops mature, and spread them in the field for air-drying.

[0087] 2. The air-dried straw is crushed, and the crushed length is 1 mm.

[0088] 3. Determination of the background value of soil samples: Collect soil samples in the saline-alkali land (wasteland) of the 147 regiment in Shihezi City, Xinjiang, and air-dry the brought back soil samples, sieve, and measure the basic physical and chemical properties of the soil (Table 1).

[0089] 4. Return the crushed straw to the saline-alkali land, and mix the straw with the 0-20cm soil layer of the saline-alkali land.

[0090] 5. Sampling the test site every 7 days to measure the soil index.

[0091] 6. Determination

[0092] (1) Soil conductivity: Measured with a conductivity meter.

[0093] (2) Soil pH valu...

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Abstract

The invention belongs to the technical field of soil improvement, and discloses a method for improving saline-alkali soil by utilizing crushed crop straws. The method for improving saline-alkali soil by utilizing crushed crop straws comprises the following steps: crushing straws to obtain crushed straws; carrying out straw returning treatment; after the straws are returned to the field, sampling in different periods during the straw returning period, and determining soil indexes. Compared with the prior art, the method for improving the saline alkali soil by utilizing the crushed crop straws has the advantages that under the condition of saving manpower and material resources, and the crushed crop straws can be utilized to change the physical structure of the soil, increase the porosity and microbial activity of the soil and accelerate the migration of soil moisture and salt in the soil, so that the pH and salt content of the soil are reduced, the water content of the soil is improved, the purpose of improving the saline-alkali soil is achieved, and a technical method is provided for improving the saline-alkali soil in fields.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, in particular to a method for improving saline-alkali soil by crushing crop stalks. Background technique [0002] At present, soil salinization is still on the rise. Salinity is the main bottleneck restricting the economic development and improvement of people's livelihood in Xinjiang's rural areas, and it is also the difficulty and focus of ecological environment improvement. Therefore, it is of great significance to control and improve salinized soil to improve the productivity of cultivated land in arid areas, increase the area of ​​cultivated land, ensure national food security, and stick to the red line of 1.8 billion mu of cultivated land. [0003] In arid areas, saline-alkali soil is widely distributed, and the area of ​​saline-alkali soil in Xinjiang is 21.8×10 6 hm 2 , accounting for 22.1% of the total saline-alkali soil area in the country; in Xinjiang, 4.1×10 6 hm 2 Among ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08C09K17/32A01B79/00C09K109/00C09K101/00
CPCB09C1/08C09K17/32A01B79/00C09K2109/00C09K2101/00
Inventor 杨海昌张曼玉张凤华陈伟业
Owner SHIHEZI UNIVERSITY
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