Sustainable improvement method for paddy field in saline-alkali land and mixed organic fertilizer
A technology of organic fertilizer and saline-alkali land, applied in the field of sustainable saline-alkali paddy field improvement and mixed organic fertilizer, can solve the problems of limited yield increase and unsatisfactory effect, and achieve pH value drop, water quality improvement, and aggregate structure enhancement Effect
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[0034] Example
[0035] The experimental field soil improvement cultivation control experiment was carried out in the moderate to severe saline-alkali paddy field around the Songnen Plain in the west of Jilin Province. Five experimental fields were divided into the same experimental field, and the improvement treatment was carried out according to the following methods, and then the rice was cultivated. Controlled test.
[0036] The improved treatment methods of each experimental group are as follows:
[0037] 1. Test 1 improved treatment method:
[0038] (1) Post-autumn plowing: After the rice is harvested, post-autumn plowing is carried out, and desulfurization gypsum is applied at the same time. The application rate of desulfurization gypsum is 2.5kg / m 2 , The depth of plowing is 20cm; after plowing is completed, winter irrigation is carried out to discharge the products of the replacement reaction of desulfurized gypsum and sodium in the soil;
[0039] (2) Plowing in spring: Plowin...
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