Carclazyte soil improvement method

A soil and clay technology, applied in the direction of soil lifting machinery, soil preparation methods, agricultural machinery and implements, etc., can solve the problems of single measures, the integration and comprehensive application of multiple improvement measures have not been reported, and achieve the improvement of soil structure , Increase the yield of rice per unit area, and improve the effect of soil fertility

Inactive Publication Date: 2014-11-19
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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Problems solved by technology

Straw returning to the field is an important measure for improving white soil. Currently, the existing improvement methods for white soil are only limited to

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  • Carclazyte soil improvement method

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Embodiment Construction

[0028] A method for improving white clay soil, the specific method is:

[0029] 1) Rice straw returning or wheat straw returning to the field. There are two ways to return rice straw to the field: the first method: return the rice straw to the field with high stubble. It refers to the use of high-stubble harvesting when the rice is directly harvested by machinery, the stubble is 30-40cm high, and then the rice stubble is turned into the ground 10-20cm; the second method: the straw is crushed and returned to the field. When the rice is directly harvested by machinery, the straw is directly crushed by 5-10cm, and then turned into the ground by 10-20cm. The method of returning wheat straw to the field is as follows: after the wheat matures from late May to early June each year, use a combine harvester with a cutting device to harvest wheat, and at the same time cut the wheat straw to a length of 5-10 cm, and the height of the remaining wheat stubble should not exceed 12cm; it i...

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Abstract

The invention discloses a whitish soil improvement method. The method includes the steps that (1) rice straw returning or wheat straw returning is conducted on carclazyte soil; (2) after straw returning is conducted, organic fertilizer is applied in a combined mode, and nitrogenous fertilizer is added to adjust the C/N ratio of straw to range from 20:1 to 30:1; (3) deep tillage is conducted on the soil to enable silt on the surface of the soil and heavy loess at the bottom to be blended fully; (4) after deep tillage is conducted on the soil, irrigation field retting is conducted; (5) after deep tillage and field retting are conducted on the soil, rice base fertilizer is applied; (6) the steps are repeated many times, and the depth of deep tillage is increased year by year every time deep tillage is conducted. According to the method, the rice per unit yield and soil fertility are improved, the soil structure is improved, the cation exchange capacity of the soil is improved, and the community structure of soil microorganisms and the soil enzyme activity are affected.

Description

technical field [0001] The invention relates to a method for improving low-yield paddy soil and white soil, and belongs to the technical field of soil improvement and restoration. Background technique [0002] Paddy soil is the most important type of soil cultivation in southern my country. In the early 1980s, low-yield paddy soil accounted for 26% of the total area. Improving the productivity of low-yield paddy soil through soil improvement is one of the important measures to ensure national food security. White soil is an important type of low-yield paddy soil in the Jianghuai and Taihu basins in China, and its distribution area in my country is about 66,743 hectares. White soil is a hydroponic man-made soil with a layer of gray, off-white or light white soil layer due to the strong mechanical leaching of clay particles and the leaching of active iron and manganese in the hydroponic redox layer. The profile properties of white clay mainly include: 1) The configuration of...

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Application Information

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IPC IPC(8): A01B79/02A01B77/00
Inventor 周卫李录久梁国庆王秀斌孙静文何萍雷秋良
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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