Straw utilization method capable of relieving soil salinization

A technology of salinization and straw, applied in the field of agricultural (vegetable) cultivation, can solve the problems of high cost, difficult application, cumbersome steps, etc., so as to facilitate the reproduction of aerobic decomposing bacteria, promote the reproduction of straw decomposing bacteria, and avoid the The effect of non-point source pollution

Active Publication Date: 2019-05-17
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can reduce the secondary salinization of soil, but its disadvantage is that it needs to cut the straw into sections, crush it, mix it with the soil by plowing, and bury it deeply. The steps are complicated and the operation cost is high.
This method can quickly degrade soil salinity and change the content of various ions in the soil, but its disadvantages are: the steps of mixing straw with fertilizer or chitosan solution are cumbersome and costly
[0007] The technology of covering rice and wheat straw on the shallow water field soil surface in the facility, combined with the ecological mode of water and dry rotation of facility v

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Select the greenhouse where Porphyridium coccus appeared on the surface of furrow soil, and the salt content of 5cm topsoil was determined to be 0.87%.

[0026] The straw utilization method for alleviating soil salinization of the present embodiment comprises the following steps:

[0027] (1) Choose a greenhouse that has soil salinization caused by excessive application of N fertilizer; by observing the obvious Porphyridium algae on the soil surface of the furrow before cropping, the soil salinization of the greenhouse is determined; the salt content of the 5cm surface soil is determined to be 0.8% , The nitrate ion content is 5500mg / kg; the soil is sandy loam.

[0028] (2) From the first ten days of March in the spring, the upright growth-type wet-growing crop taro (sub-jar type) suitable for fully moist cultivation of the surface soil shall be planted in the greenhouse;

[0029] (3) Combined with suppressing the germination of the side buds of the taro plants in earl...

Embodiment 2

[0036] Choose a greenhouse with green moss on the surface of the ditch soil, and the salt content of the 5cm topsoil is 1.32%.

[0037] The straw utilization method for alleviating soil salinization of the present embodiment comprises the following steps:

[0038] (1) Select a greenhouse that causes soil salinization due to excessive application of N fertilizer; by observing the obvious green moss on the soil surface of the ditch before cropping, the soil salinization of the greenhouse is determined; the salt content of the 5cm surface soil is determined to be 1.32%, The nitrate ion content is 3600mg / kg; the soil is clay loam.

[0039] (2) Live water spinach in the greenhouse in the first ten days of February in spring, and conventional dry planting management;

[0040] (3) In late March, when the noon temperature exceeds 30°C on a sunny day in the shed, the rice straw stored in the room is collected after spreading in the ditch before spreading in the sun, and the thickness ...

Embodiment 3

[0048] Choose a greenhouse with green moss on the surface of the ditch soil, and the salt content of the 5cm topsoil is determined to be 0.58%.

[0049] The straw utilization method for alleviating soil salinization of the present embodiment comprises the following steps:

[0050] (1) Wet-planted cress was planted in the greenhouse in late August, and green moss was found on the surface of the ditch soil in late September. It was determined that the salt content of the 5cm topsoil was 0.58%, and the nitrate ion content was 4300mg / kg; the soil quality was Loam (intermediate form of sandy loam and clay loam);

[0051] (2) The last ten days of October is the rice harvest season, and the furrows are covered with rice straw bundled during mechanical harvesting of rice, the length of the straw is 15-20cm, and the thickness of the straw is equal to that of the furrow surface;

[0052] (3) Make the furrow surface fully moist by spraying until there is about 3-5cm of water in the furr...

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PUM

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Abstract

The invention discloses a straw utilization method capable of relieving soil salinization in the technical field of agricultural (vegetable) cultivation. The method is characterized by comprising thefollowing steps: as for a greenhouse with soil salinization due to excessive application of N fertilizer, upright growth type hygrophilous crops suitable for surface soil sufficient wet cultivation are planted in the greenhouse; herbal crop straw with high carbon content are selected and the straw is spread in bed furrows; bed surfaces are fully wet by furrow irrigation or spraying, and water is held in the bed furrows in a short time; straw in the bed furrows is stepped during agricultural operation such as fertilization, pesticide spraying and harvesting; when the straw in the bed furrows iscompletely decomposed and time permits, if porphyridium or green moss still exist on soil surfaces of the bed furrows, straw is added continuously to the bed furrows; if porphyridium or green moss isnot discovered in the bed furrows, the soil salinization is indicated to be relieved. Extra NO3<-> ions in soil can be consumed and decomposed and soil salinization can be relieved.

Description

technical field [0001] The invention belongs to the technical field of agricultural (vegetable) cultivation, and in particular relates to a straw utilization method for alleviating soil salinization. Background technique [0002] At present, the obstacle of continuous cropping of facility vegetables has become the bottleneck problem of high-quality and safe production of vegetables, and soil salinization is one of the main factors of continuous cropping obstacles. Excessive fertilization, high multiple cropping index and heavy cropping in the production process are important reasons for soil salinization. Compared with other fertilizers, N fertilizer is the most widely used and concentrated fertilizer in facility agricultural production. According to the principle of "salt goes with water", in the case of planting conventional xeric vegetables, NO 3 - The ion-dominated soil salinity mainly accumulates in the topsoil, NO 3 - The ions are easily soluble in water. After ir...

Claims

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Application Information

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IPC IPC(8): A01B79/02
Inventor 江解增刘辉钱佳宇张昊张永仙李东昇
Owner YANGZHOU UNIV
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