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Fertilizing method for lowering nitrate leaching loss of soil

A fertilization method and nitrate technology, applied in the field of fertilization to reduce soil nitrate leaching, can solve the problems of lack of organic fertilizer application method and application amount in vegetable land, and achieve improved fertilizer production efficiency, guaranteed crop yield, and significant environmental benefits Effect

Active Publication Date: 2015-11-25
GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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Problems solved by technology

[0006] The current technical methods for controlling non-point source pollution are mainly for dry land and paddy fields, but there is a lack of research on the application methods and application rates of organic fertilizers for vegetable fields

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  • Fertilizing method for lowering nitrate leaching loss of soil
  • Fertilizing method for lowering nitrate leaching loss of soil

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Embodiment 1～3

[0036] Embodiment 1~3 A kind of fertilization method that reduces soil nitrate leaching loss

[0037] 1) Calculate and weigh the amount of various fertilizers:

[0038] The organic fertilizers in Examples 1 to 3 are poultry and livestock compost (containing 57.0% organic matter, N0.35%, P0.79%, K1.39%), mushroom residue compost (containing 38.5% organic matter, N0.51%, P0.94%, K1.95%), vegetable residue compost ((contains 22.2% organic matter, N0.14%, P0.14%, K0.60%), the fertilization standards of these three organic fertilizers are 450kg / Mu, 550kg / mu, 600kg / mu (as shown in Table 1); that is, it meets the standards of organic fertilizer fertilization: N0.8~3.0(kg / mu), P1.0~6.0(kg / mu), K2.0~ 10.5 (kg / mu).

[0039] In embodiment 1, inorganic fertilizer is 34.8kg urea (containing N46%), 21.7kg potassium chloride (containing K52%) and 45.0kg superphosphate (containing P8%); In embodiment 2, inorganic fertilizer is 54.3kg urea (N46 %), 33.3kg potassium sulfate (containing K45...

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Abstract

The invention discloses a fertilizing method for lowering nitrate leaching loss of soil. The method comprises the steps: applying organic fertilizers before planting according to the fertilizing standard of 0.8-3.0kg of N per mu, 1.0-6.0kg of P per mu and 2.0-10.5kg of K per mu, and meanwhile, applying a small amount of inorganic fertilizers; and then, carrying out planting, and then, applying the inorganic fertilizers for 5-7 times. According to the method, through the specific organic fertilizer variety and reasonable proportion of the organic fertilizers and the inorganic fertilizers, the accumulation of nitrate nitrogen of the soil can be remarkably lowered, the pollution is reduced, and particularly the pollution to underground water is reduced; and the fertilizing method disclosed by the invention can be used for promoting the vegetative growth of plants and remarkably increasing fertilizer production efficiency and guaranteeing crop yield while reducing fertilizer input, thereby having a remarkable economic benefit.

Description

technical field [0001] The invention relates to a fertilization method for reducing soil nitrate leaching loss. Background technique [0002] Improper management of nutrients such as fertilizers will cause serious resource and environmental problems. In recent years, excessive nitrogen fertilization in some farmlands has become an important source of water eutrophication and greenhouse gases in Guangzhou. Improper nutrient management has also caused soil acidification and aggravated pests and diseases. With the continuous increase of the amount of chemical fertilizer, its utilization rate and utilization efficiency gradually decreased. From a national perspective, the utilization rate of nitrogen fertilizer in the current season is 27.5%, while the utilization rate of nitrogen fertilizer in vegetable production is even lower. 36.5% nitrogen was lost through surface runoff or gaseous volatilization. Due to the low utilization rate of fertilizers, the cost of agricultural pr...

Claims

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Application Information

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IPC IPC(8): A01C21/00A01B79/02
Inventor 王荣萍李淑仪廖新荣丁效东詹振寿余炜敏梁嘉伟
Owner GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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