Takyr solonetz improvement method
An alkaline soil and amendment technology, applied in the fields of soil preparation, climate change adaptation, agricultural machinery and implements, etc., can solve the problems of difficult and fast rinsing of salt, soil water swelling, poor physical properties, etc., to provide ion exchange conditions, improve Soil physical structure, effect of improving soil structure
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Embodiment 1
[0029] The specific implementation steps are as follows:
[0030] 1. Level the land first, the height difference is not more than 5cm, apply improver and fertilizer on the surface of the land, and deeply loosen and plow the land to fully mix the improver, fertilizer and soil. The composition and dosage of the improver are desulfurization Gypsum 28t / hm 2 , furfural slag 7.5t / hm 2 , organic fertilizer 35t / hm 2 , sheep dung or cow dung 50m 3 / hm 2 , yellow sand 100m 3 / hm 2 , wherein the depth of deep turning is 20cm;
[0031] 2. Set up a drainage ditch on one side of the entire land;
[0032] 3. Open multiple underground ditches with a depth of 100cm-120cm and a width of 30cm on the land perpendicular to the drainage ditch, and fill the underground ditches with gravel with a layer thickness of 30cm, straw with a layer thickness of 40cm, and soil until it is level with the land level flat, and the distance between the culverts is 4m;
[0033] 4. Build high ridges on the ...
Embodiment 2
[0038] Adjust the pitch of the dark ditch in step 3 of the first embodiment to 6m, and keep the other implementation content consistent with the first implementation.
Embodiment 3
[0040] Adjust the pitch of the dark ditch in step 3 of the first embodiment to 8m, and keep the other implementation content consistent with the first implementation.
[0041] Table 1 shows the improvement results of saline-alkali land in three examples using different culvert spacings.
[0042] Table 2 shows the improvement results of saline-alkali land at different distances from the culvert in the three examples.
[0043] Table 1
[0044]
[0045] Table 2
[0046]
[0047]The test results show that the soil pH, alkalinity, and total salt are all reduced under the conditions of water and salt control measures combined with gravel ditch salt drainage. The soil hydrodynamic conditions near the gravel culvert are stronger, the water movement is faster, and the salt washing effect is more obvious. It can be seen from the improvement effect and engineering investment that the effect of culvert spacing 6m is the best.
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