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Soil conditioning agent, and preparation method and applications thereof

A technology of soil conditioner and crop straw, which is applied in the field of soil pollution restoration and improvement, which can solve the problems of soil quality decline, soil nutrient loss and loss due to the use of chemical fertilizers, and achieve the effects of increasing food production, promoting biodegradation, and reducing residual pollution

Active Publication Date: 2015-12-09
INST OF SOIL FERTILIZER & ENVIRONMENT RESOURCE HEILONGJIANG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The increase in the amount of chemical fertilizers will inevitably lead to a huge loss and loss of soil nutrients, a large amount of harmful elements will accumulate in the soil, and the soil quality will seriously decline

Method used

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  • Soil conditioning agent, and preparation method and applications thereof
  • Soil conditioning agent, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The present embodiment provides a soil conditioner and preparation method thereof, the specific process is as follows:

[0031] 1) Send corn and rice straw low-temperature carbide, organic fertilizer, and humic acid to the pulverizer according to the ratio of biochar: organic fertilizer: humic acid = 5:3:1, and pulverize until the particle size is 1.0- 4.0mm, to obtain pulverized materials; among them, low temperature carbides of corn and rice straw, corn straw and rice straw are mixed according to the same quality, after mixing, anaerobic carbonization treatment is carried out in a carbonization furnace at 300 ° C for 4-5 hours.

[0032] 2) Mix the pulverized material and clay obtained in step 1), send the EM bacterial agent into the extrusion granulator or disc granulator through the spraying device according to the formula ratio, and perform preliminary molding to obtain preliminary shaped granules , the number of viable bacteria in the EM bacterial agent used is 2×1...

Embodiment 2

[0036] This embodiment provides a soil conditioner. The difference between the soil conditioner and Example 1 is that low-temperature carbide of straw, organic fertilizer, and humic acid are formulated according to biochar:organic fertilizer:humic acid=6:2: The ratio of 1 is sent to the pulverizer for pulverization. Finally, in the soil conditioner, in terms of mass percentage, corn and rice straw low-temperature carbide accounted for about 60%, organic fertilizer 20%, humic acid 10%, clay 5%, and EM bacterial agent 5%.

Embodiment 3

[0038] The present embodiment provides a kind of soil conditioning agent, and the difference of this soil conditioning agent and embodiment 1 is:

[0039] Straw low-temperature carbide, organic fertilizer, and humic acid are sent to the grinder for crushing according to the ratio of biochar: organic fertilizer: humic acid = 9:7:4. Finally, in the soil conditioner, in terms of mass percentage, corn and rice straw low-temperature carbide accounted for about 45%, organic fertilizer 35%, humic acid 20%, clay 10%, and EM bacterial agent 10%.

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Abstract

The invention discloses a soil conditioning agent, and a preparation method and applications thereof, and belongs to the technical field of soil pollution remediation and modification. The soil conditioning agent comprises, by mass, 45 to 70% of crop straw low temperature anaerobic carbide, 20 to 35% of an organic fertilizer, 5 to 20% of humic acid, 5 to 10% of clay, and 5 to 10% of EM microbial agent. The invention also provides a preparation method and applications of the soil conditioning agent. The soil conditioning agent is capable of eliminating residual toxin of herbicide polluted soil, and repairing polluted soil, is capable of improving soil physical and chemical properties of paddy field soil and acidified soil, increasing fertilizer utilization rate, reducing fertilizer loss, promoting crop growth, and increasing grain yield.

Description

technical field [0001] The invention relates to a soil conditioner and its preparation method and application, and belongs to the technical field of soil pollution restoration and improvement. Background technique [0002] Chemical weeding is an important technical measure in agricultural production, but the impact of herbicide residues on the soil and the growth of subsequent crops is increasing year by year, especially the soil barriers of continuous cropping soybeans are particularly obvious. The alpine region north of 45° north latitude in Heilongjiang Province is the main soybean planting area. The soybean continuous cropping area can reach more than 40% of the soybean planting area. Some plots have been continuously cropping soybeans for more than 20 years. , oxazolones and other long-lasting herbicides are seriously polluted. Due to herbicide residues in soybean fields and serious soil barriers, the growth and development of high-yield crops such as corn, potatoes, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C05G3/04C09K101/00C09K109/00C05G3/80
Inventor 李玉梅魏丹王根林张军政刘峥宇张冬梅金梁王伟李艳蔡珊珊
Owner INST OF SOIL FERTILIZER & ENVIRONMENT RESOURCE HEILONGJIANG ACADEMY OF AGRI SCI
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