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Method for improving saline-alkali land by combining straw biochar and microbial fertilizer

A technology of microbial fertilizer and straw biology, which is applied in the fields of land preparation methods, applications, agricultural machinery and implements, can solve the problems of inability to grow crops in saline-alkali land and low crop yield, and achieves reduction of carbon emissions in agricultural areas, easy availability of raw materials, and increased The effect of carbon sequestration

Active Publication Date: 2017-04-12
上海孚祥生态环保科技股份有限公司
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Problems solved by technology

[0008] The present invention aims to solve the technical problem that the existing saline-alkali land cannot grow crops or the crop yield is low, and provides a method for improving saline-alkali land by combining straw biochar and microbial fertilizer

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  • Method for improving saline-alkali land by combining straw biochar and microbial fertilizer

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specific Embodiment approach 1

[0026] Specific implementation mode 1: In this implementation mode, the method for improving saline-alkali land by combining straw biochar and microbial fertilizer is carried out according to the following steps:

[0027] 1. First compost and ferment the organic fertilizer at 20-60°C to obtain decomposed organic fertilizer, then mix straw biochar, microbial fertilizer and decomposed organic fertilizer according to the weight ratio of 6-12:1:10-20 Uniform, stacked for 7-10 days, stacked height ≤ 1.0 meters, to obtain mixed fertilizer;

[0028] 2. Sprinkle the mixed fertilizer obtained in step 1 evenly on the ground 0-2 days before soil preparation, and the application rate is 1350-2100kg / mu;

[0029] 3. Immediately after spreading, cross-plow 1-2 times, the depth of rotary plowing is 12-15cm, immediately suppress after rotary plowing, and then sow.

[0030] In this embodiment, the application amount of straw biochar is within the range of 10-20 tons / ha, and the effect of soil im...

specific Embodiment approach 2

[0031] Embodiment 2: This embodiment differs from Embodiment 1 in that the straw biochar described in step 1 is biochar formed by carbonization of crop straws, wherein crop straws include corn straw, rice straw, cotton straw, etc. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0032] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the organic fertilizer in Step 1 is forage animal manure, such as cow manure, sheep manure, etc. Others are the same as in the first or second embodiment.

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Abstract

A method assembling straw biochar with microbe bacteria fertilizer so as to improve saline land relates to the saline land improvement method, and aims to solve the technical problems that an existing saline land cannot plant crops or the crops output is low; the method comprises the following steps: composting and fermenting an organic fertilizer so as to obtain decomposed organic fertilizer, uniformly mixing the straw biochar, the microbe bacteria fertilizer and the decomposed organic fertilizer according to weight ratio: 1-12:1:10-20, and piling up the mixture for preparation; uniformly throwing the straw biochar, the microbe bacteria fertilizer and the decomposed organic fertilizer mixing improvement material on the soil surface 0-2 days before soil working, and appilication amount is 1350kg / mu; doing intersect rotary tillage for 1-2 times after fertilizer application, rotary tillage depth is 12-15cm, immediately suppressing the soil after rotary tillage, and then sowing is carried out. The method is simple, modifiers are straw biochar and manure, the materials are easy to get, so cost is low; the improved saline land is obvious in effect; the method is suitable for saline land improvement.

Description

technical field [0001] The invention relates to a method for improving saline-alkali land. Background technique [0002] The function of biochar for soil improvement originated from the discovery and research of the black soil (Terra Preta) in the Amazon Basin in South America. As early as 1500 years ago, South American Indians habitually improved the local soil with charcoal, manure and animal bones. Fertile Amazon Basin soil in South America. Since the 1990s, there has been increasing research on the production of biochar from pyrolyzed biomass and its use as a soil amendment and carbon sequestration agent. Foreign countries have carried out research work on the properties and characteristics of biochar and its effects on soil physical and chemical properties, microorganisms, and soil carbon sequestration, while China has just started, and its basic research is relatively weak. The research time on the structure and properties of biochar is very short. Although there are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/02
Inventor 刘长江王光华肖庆红吴东升
Owner 上海孚祥生态环保科技股份有限公司
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