Agricultural non-point source pollution conditioning agent and preparation method thereof

A technology for agricultural non-point source pollution and conditioner, which is applied in the field of agricultural non-point source pollution conditioner and its preparation, can solve the problems of yield reduction, unsatisfactory nitrogen and phosphorus adsorption and inhibition and control effects, insufficient crop nutrition, etc. Availability, good effect of pollutant adsorption

Inactive Publication Date: 2018-11-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adsorption and control effect of biochar on nitrogen and phosphorus is not ideal, and

Method used

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  • Agricultural non-point source pollution conditioning agent and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The biochar made from rice straw is crushed through a 60-mesh sieve, the sheep manure is dried and crushed through a 60-mesh sieve, and 0.3 parts of rice straw biochar, 0.5 parts of dry sheep manure, 0.02 parts of polyacrylamide, calcium carbonate 0.1 part, 0.06 part of zeolite powder, and 0.01 part of EDTA-chelated iron were uniformly mixed. Put the mixture into the aerobic fermentation device, adjust the water content to 60%, add 0.01 part of the inoculant, and carry out aerobic fermentation by means of static forced ventilation, and the ventilation adopts automatic intermittent ventilation, during which the moisture content of the fermented product is kept at 30%. Around 30 days, the fermentation is complete. The fermented product obtained was dried in an oven at 60°C to constant weight, then thoroughly crushed to 40 mesh, and tested for nutrients and heavy metals to make it meet the national farmland fertilizer use standards.

[0034] After the production of the pr...

Embodiment 2

[0036] The biochar made from rice straw is crushed through a 60-mesh sieve, the rice straw biochar is crushed through a 60-mesh sieve, the sheep manure is dried and crushed through a 60-mesh sieve, and 0.2 parts of rice straw biochar, dried sheep manure 0.6 part, 0.02 part of polyacrylamide, 0.1 part of calcium carbonate, 0.05 part of zeolite powder, and 0.02 part of EDTA-chelated iron were uniformly mixed. Put the mixture into an aerobic fermentation device, adjust the water content to 70%, add 0.01 part of inoculum, and carry out aerobic fermentation by means of static forced ventilation, and the ventilation adopts automatic intermittent ventilation, during which the moisture content of the fermented product is kept at 30%. Around 30 days, the fermentation is complete. The fermented product obtained was dried in an oven at 60°C to constant weight, then thoroughly crushed to 40 mesh, and tested for nutrients and heavy metals to make it meet the national farmland fertilizer us...

Embodiment 3

[0039] Select several typical crop planting areas to carry out monitoring experiments on non-point source pollution conditioners. In the present embodiment, in Shengzhou City (vegetables), Zhuji City (vegetables), Taizhou City Luqiao District (vegetables), Cangnan County, Wenzhou City (vegetables), Xiaoshan District, Hangzhou City (vegetables), Lanxi City (Ziazania japonica), Wuxing District, Huzhou City (rice-oil rotation), Longquan City (rice-oil rotation), Tongxiang City (rice-oil rotation), Liandu District, Lishui City (rice-wheat rotation), Tiantai County, Taizhou City (rice-wheat rotation), Tonglu, Hangzhou Counties (rice and wheat rotation), Cangnan County, Wenzhou City (rice and fertilizer rotation), Jinhua City Economic Development Zone (rice and fertilizer rotation), Putuo District, Zhoushan City (rice and fertilizer rotation), Chun'an County, Hangzhou (tea garden), Kaihua, Quzhou City County (tea garden), Anji County, Huzhou City (tea garden), Kecheng District, Quzh...

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Abstract

The invention discloses an agricultural non-point source pollution conditioning agent and a preparation method thereof, and belongs to the field of an agricultural fertilizer. The method is characterized in that the agricultural non-point source pollution conditioning agent is obtained by using rice stalk biomass charcoal, dry sheep manure and polyacrylamide as major materials and using calcium carbonate, zeolite powder and EDTA-chelate iron as regulating agents through mixed fermentation and drying. The adsorption effect of charcoal and the zeolite powder on soil nitrogen, phosphorus, heavy metal ions and the like is fully utilized; through the PAM bridging effect, the charcoal and sheep manure particle bonding and large-pore structure is manufactured; the specific surface area of the charcoal micropore structure is enhanced; through chelate iron and calcium carbonate, the surface functional group of the charcoal is enriched, so that the adsorption effect is further reinforced; meanwhile, the product contains higher nutrient substances; a slow release effect is achieved; the soil nutrient substance loss cannot be caused. The product can be used for preventing, controlling and conditioning the loss of farmland elements such as nitrogen and phosphorus, can be used for heavy metal polluted soil restoration and can also be used as a compound organic fertilizer.

Description

technical field [0001] The invention belongs to the field of agricultural fertilizers, and in particular relates to an agricultural non-point source pollution conditioner and a preparation method thereof. Background technique [0002] The amount of chemical fertilizers used in China exceeds that of any other country in the world. The application of large amounts of phosphorus and nitrogen fertilizers in the past few decades has greatly increased crop yields. However, many studies have shown that excessive fertilizer application far exceeds the growth requirements of the crop itself, leading to a large amount of excess nitrogen and phosphorus accumulation in the soil, and part of N and P are affected by factors such as rainfall and irrigation, and along with the surface and underground Runoff enters rivers, lakes, and bays, leading to eutrophication of water bodies. In southern China, the pollution problem caused by non-point source nitrogen and phosphorus pollution is parti...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05F17/00C05G3/80
CPCC05D3/02C05F17/00C05G3/00C05G3/80C05D9/00C05D9/02C05F3/00Y02W30/40
Inventor 梁新强李发永何霜周俊杰刘枫陈玲玲
Owner ZHEJIANG UNIV
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