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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

Pending Publication Date: 2019-12-13
吉林辰雨农业科技有限公司
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Problems solved by technology

However, in production practice, we found that the effect of using desulfurized gypsum alone to improve saline-alkali soil is not satisfactory. The increase in crop yield after improvement is relatively limited, and there is still room for improvement in the utilization rate of saline-alkali soil

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  • Sustainable improvement method for paddy field in saline-alkali land and mixed organic fertilizer

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Effect test

Embodiment

[0035] In the moderate to severe saline-alkali paddy fields located in the western Songnen Plain of Jilin Province, the soil improvement and cultivation control experiment of the test field was carried out. In the same test field, 5 test fields were divided, and the improvement treatments were carried out according to the following methods, and then rice cultivation was carried out. Controlled trials.

[0036] The modified treatment methods for each test group are as follows:

[0037] 1. The improved treatment method of test group 1:

[0038] (1) Post-autumn plowing: After the rice is harvested, post-autumn plowing is carried out, and desulfurized gypsum is applied at the same time. The application rate of desulfurized gypsum is 2.5kg / m 2 , the plowing depth is 20cm; after the plowing is completed, perform winter irrigation to discharge the product of the sodium salt replacement reaction between desulfurized gypsum and soil;

[0039] (2) Spring plowing: plowing is carried ou...

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Abstract

The invention belongs to the technical field of rice planting and particularly relates to a sustainable improvement method for a paddy field in saline-alkali land and a mixed organic fertilizer. The improvement method for the paddy field comprises the steps of turn-over and application of desulphurization gypsum after autumn, rice straw pretreatment, preparation of the mixed organic fertilizer, turn-over and application of the mixed organic fertilizer in spring and the like. According to the method, the desulphurization gypsum is combined with the mixed organic fertilizer for application, andthe technology of turn-over in autumn and irrigation in winter is adopted, so that the improvement effect on saline-alkali soil is further improved, the cultivation efficiency of the improved soil isimproved, and experiments show that the method and the mixed organic fertilizer can obviously increase the rice yield of improved saline-alkali land. According to the method, with agricultural and industrial waste as a raw material, the environmental pollution is reduced, the method is beneficial to waste recycling, and therefore the method is a soil improvement method for sustainable development.

Description

technical field [0001] The invention belongs to the technical field of rice planting, and in particular relates to a method for improving sustainable saline-alkali paddy fields and a mixed organic fertilizer. Background technique [0002] The Songnen Plain in Northeast China is one of the three concentrated distribution areas of soda saline soil in the world. Especially in the west of the Songnen Plain, there are a large number of soda saline land. Poor performance, easy to compact, resulting in low organic matter and microbial content in the soil, not suitable for direct planting of rice. [0003] An important method of improving saline-alkali land is to return straw to the field, that is, to use processed straw to cover and plow the fields, and to improve soil fertility by virtue of the nutrients decomposed and degraded by the straw in the field to improve soil fertility. The purpose of next season's crop yield. However, due to the high salt content of saline-alkali soil...

Claims

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Application Information

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IPC IPC(8): A01B79/02C09K17/40C09K101/00
CPCA01B79/02C05F3/00C05D9/00C09K2101/00
Inventor 张枫
Owner 吉林辰雨农业科技有限公司
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