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Soil loosening fertility intensifier as well as preparation method and application thereof

A technology of soil loosening and fertilizer, applied in the field of soil, can solve the problems of reduced yield of agricultural products, compaction of farmland soil, lack of trace elements, etc., to achieve the effects of reduced loss, uniform particle size, and compensation for the lack of potassium content

Inactive Publication Date: 2013-12-18
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In my country's current agricultural production, chemical fertilizers are mostly used, which have single effects and short fertilizer effects, and are easily leached into surface and groundwater through rainwater. Not only the utilization rate is low, but also the eutrophication of water bodies is caused.
And long-term use of chemical fertilizers destroys the soil aggregate structure, causes farmland soil compaction, and also causes soil flora imbalance and lack of trace elements, which eventually leads to a decrease in the yield and quality of agricultural products

Method used

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  • Soil loosening fertility intensifier as well as preparation method and application thereof
  • Soil loosening fertility intensifier as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1 Soil property improvement test

[0021] According to the mass ratio of rice husk charcoal: dewatered sludge is 1:15, add rice husk charcoal to the dewatered sludge after passing through a 10-mesh sieve, stir and mix evenly, and maintain 50-60% moisture at 25°C by constant weight method Under certain conditions, after 30 days of passivation, it becomes a soil loosening and fertilizing agent.

[0022] Add the above-mentioned loosening and fertilizing agent to the soil at a rate of 350g per 1000g of soil, stir evenly, and measure the soil indicators after air-drying. The measurement method refers to the soil testing series standards (NY / T1121-2006). The comparison of soil properties before and after improvement is shown in Table 1.

[0023] Table 1 Comparison of soil properties before and after improvement

[0024]

[0025] It can be seen from the above table that after adding the soil loosening and fertilizing agent, the soil pH value increased by 0.26, ...

Embodiment 2

[0027] Referring to the method of Example 1, a soil loosening and fertilizing agent was prepared, wherein the mass ratios of rice husk charcoal and dewatered sludge were 1:2.5, 1:5, 1:10, and 1:20, respectively.

[0028] With reference to the method of use of the soil loosening and fertilizing agent of Example 1, a soil improvement experiment was carried out, wherein, after the loosening and fertilizing agent was added to the soil in a ratio of 250g and 500g per 1000g of soil, the soil properties before and after improvement were compared in Table 2.

[0029] Table 2 Comparison of soil properties before and after improvement

[0030]

[0031] It can be seen from Table 2 that after adding the soil loosening and fertilizing agent, the total soil porosity, soil cation exchange capacity CEC, organic matter, alkaline nitrogen, available phosphorus and available potassium have been effectively improved, significantly increasing the soil porosity and fertility.

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Abstract

The invention discloses a soil loosening fertility intensifier as well as a preparation method and application thereof. The soil loosening fertility intensifier is prepared by performing passivation culture on rice husk char and dewatered sludge according to a mass ratio of 1:(2.5-20) for 30-35 days. A using method is that 250-500g of the loosening fertility intensifier is added into every 1000g of soil. The soil loosening fertility intensifier disclosed by the invention can significantly increase the permeability of the soil, quickly improve every fertilizer effect index of the soil, improve the physicochemical properties of the soil and improve the comprehensive fertility level of the soil. The soil loosening fertility intensifier disclosed by the invention fully uses the advantages of each of the two advantages in the aspect of soil improvement, the raw materials are easily available, low in price and simple and convenient in process, and the remaining sludge can be effectively treated and a biomass-gasified byproduct rice husk char can be subjected to resource utilization at the same time.

Description

technical field [0001] The invention relates to the technical field of soil, in particular to a soil loosening and fertilizing agent and its preparation method and application. Background technique [0002] With the improvement of sewage treatment rate in our country, the amount of municipal sludge produced by sewage treatment has also increased sharply. Since sludge is rich in organic matter and plant nutrients such as N and P, agricultural use of sludge is undoubtedly the most economical and environmentally friendly disposal method. However, the sludge itself is muddy, easy to agglomerate and not easy to break after drying, and also contains some toxic and harmful substances, especially heavy metals that are not easy to degrade, making it not suitable for direct use in farmland. [0003] Rice husk charcoal is a kind of biochar using rice husk as raw material. It is a solid by-product obtained after gasification under anoxic or anaerobic conditions. It is a porous material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
Inventor 张文妍高常卉张齐生周培国章一蒙孙盼华吴冠男
Owner NANJING FORESTRY UNIV
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