Method and device for applying straws with different fragmentation degrees and decomposition degrees into saline-alkali soil in layered and ex-situ manner

A technology for maturity and saline-alkali land, which is applied in soil preparation methods, agricultural machinery and implements, and applications. It can solve the problems of unsatisfactory effects and slow results, and achieve the effects of reducing the rise of salinity, alleviating salinization, and having a wide range of sources

Active Publication Date: 2021-10-26
HEBEI UNIV OF ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Method and device for applying straws with different fragmentation degrees and decomposition degrees into saline-alkali soil in layered and ex-situ manner
  • Method and device for applying straws with different fragmentation degrees and decomposition degrees into saline-alkali soil in layered and ex-situ manner
  • Method and device for applying straws with different fragmentation degrees and decomposition degrees into saline-alkali soil in layered and ex-situ manner

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A method of layering and displacing straws with different degrees of fragmentation and maturity into saline-alkali land. First, the soil layer of 0-40 cm in saline-alkali land is divided into 0-10 cm soil layer and 10-20 cm soil layer according to 10 cm layers. , 20-30 cm soil layer and 30-40 cm soil layer four soil layers, 0-10 cm soil layer is applied with straw with a crushing degree of less than 3 cm, and at the same time, this layer of soil is mixed with slow-release fertilizer, 10-20 cm Apply straw with a crushing degree of about 3 to 5 cm in the soil layer, and add straw decay accelerator at the same time; apply straw with a crushing degree of about 5 to 8 cm in the 20 to 30 cm soil layer, and the upper layer can be washed with salt and excessive The water is introduced under the plow layer; the 30-40 cm soil layer is covered with straw with a crushing degree of 8-12 cm, which is conducive to horizontal drainage and can prevent groundwater from rising to the plow ...

Embodiment 2

[0055] Firstly, the 0-40 cm soil layer in the saline-alkali land is divided into four layers of 0-10 cm soil layer, 10-20 cm soil layer, 20-30 cm soil layer and 30-40 cm soil layer according to 10 cm layer. Apply straw with a crushing degree of about 2 cm in the 0-10 cm soil layer, and at the same time, mix slow-release fertilizers in this layer of soil, apply straw with a crushing degree of about 3-5 cm in the 10-20 cm soil layer, and add straw at the same time Corrosion accelerator; 20 ~ 30 cm soil layer to apply straw with a crushing degree of about 5 to 8 cm; 30 to 40 cm soil layer to apply straw with a crushing degree of about 10 cm, and apply it to each layer of soil from top to bottom Straw maturity gradually decreased.

[0056] Select the moderately salinized soil experimental area, the total salt content of the soil is about 0.45%, and the pH value is 8.9-9.1. By the above method, straws with different degrees of fragmentation and maturity are layered and ectopically ...

Embodiment 3

[0061] A method of layering and displacing straws with different degrees of fragmentation and maturity into saline-alkali land. First, the soil layer of 0-40 cm in saline-alkali land is divided into 0-10 cm soil layer and 10-20 cm soil layer according to 10 cm layers. , 20-30 cm soil layer and 30-40 cm soil layer four soil layers, 0-10 cm soil layer is applied with straw with a crushing degree of less than 3 cm, and at the same time, this layer of soil is mixed with slow-release fertilizer, 10-20 cm Apply straw with a crushing degree of 3 to 5 cm in the soil layer, and add a straw rot accelerator at the same time, which is conducive to straw decomposing; apply straw with a crushing degree of 5 to 8 cm in the 20 to 30 cm soil layer; 30 to 40 cm soil layer The straw with a crushing degree of 8-10 cm. The maturity of straw applied in each layer of soil from top to bottom gradually decreased.

[0062] Select the soil experiment area with mild salinization, the total salt content ...

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Abstract

The invention discloses a method and device for applying straws with different fragmentation degrees and decomposition degrees into saline-alkali soil in a layered and ex-situ manner. The saline-alkali soil is divided into a plurality of soil layers, straws with different fragmentation degrees and decomposition degrees are applied to each soil layer, the decomposition degree of the straws applied to each soil layer is gradually reduced from top to bottom, and the fragmentation degree of the straws applied to each soil layer is gradually increased from top to bottom; the economic investment of the straws is small, and the effects of the straws in different forms are fully utilized to improve the soil texture of the saline-alkali soil and relieve further salinization of the saline-alkali soil; the device applied to the saline-alkali soil comprises a rack, a plurality of material storage boxes are installed at the upper end of the rack, and conveying mechanisms are installed at discharging openings in the bottoms of the material storage boxes; a plurality of subsoiling shovels which are in one-to-one correspondence with the conveying mechanisms are mounted on the rack from the front end to the tail end. By means of the device, the subsoiling shovels with different depths are arranged, the shovel tips of the different subsoiling shovels advance in the corresponding soil layers, the conveying mechanisms can convey straws with different fragmentation degrees and decomposition degrees in a storage box to the preset soil layers, and the straws can be applied to the 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 applying straws with different degrees of fragmentation and maturity to saline-alkali land. Background technique [0002] At present, the traditional improvement methods for saline-alkali land mainly include: [0003] 1. Physical improvement: mainly leveling the ground in saline-alkali land, deep plowing and drying, loosening the soil in time, raising the terrain, and improving the soil in micro-area, which can accelerate salt leaching, prevent salt return, enhance moisture conservation and drought resistance, and improve soil structure and nutrient status. 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 salt washing: Use a large amount of fresh water to i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 程东娟郭海刚武海霞宋利强
Owner HEBEI UNIV OF ENG
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