Method and device for applying layered and heterogeneous straw with different degrees of fragmentation and maturity to saline-alkali land

Abstract

The invention discloses a method and a device for layering and displacing straws with different degrees of fragmentation and maturity into saline-alkali land. The saline-alkali land is divided into multiple soil layers, and straws of different degrees of decomposition and degrees of fragmentation are applied to each layer of soil. , the maturity of the straw applied in each layer of soil from top to bottom gradually decreases, and the degree of fragmentation gradually increases; the economic investment of straw is small, and by making full use of the role of straw in different forms, it can improve the soil texture of saline-alkali land and alleviate the further salinization of saline-alkali land. Alkalization; the device for applying saline-alkali land includes a frame, and multiple storage boxes are installed on the upper end of the frame, and a conveying mechanism is installed at the outlet of the bottom of the storage box; multiple conveying mechanisms are installed on the frame from the front end to the tail end One-to-one corresponding subsoiling shovels; by setting subsoiling shovels of different depths, the shovel tips of different subsoiling shovels respectively advance in the corresponding soil layer, and the conveying mechanism can transfer the soil of different degrees of crushing and maturity in the storage box The straw is transported to the preset soil layer to realize the application of straw to four different soil layers at the same time.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land treatment, in particular to a method and a device for layering and ex-situ application of straws with different fragmentation and decomposing degrees to saline-alkali land. Background technique [0002] At present, the traditional improvement methods for saline-alkali land mainly include: [0003] 1. Physical improvement: It is mainly for leveling the ground, deep ploughing and drying, timely loosening the soil, raising the terrain, and improving the soil in the micro-area on the saline-alkali land. However, this method has a large amount of engineering and high cost, and it takes a long time to achieve the purpose of reducing salt and changing alkali, and the effect is slow; [0004] 2. Irrigation and washing of salt: Use a large amount of fresh water to irrigate the saline-alkali land, so that the salt in the saline-alkali land is dissolved in the water, and then ditch the drainage t...

AI Technical Summary

Problems solved by technology

Biological improvement requires the smallest investment, but the requirements for salt-tolerant plants are relatively high. It is necessary to have a better understanding of the salt-tolerant mechanism of halophytes, and biological improvement is often slow to take effect

[0007] Traditional improved governance methods are not effective enough and need to be improved urgently

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