Environment friendly composite material for controlling loss of nitrogenous fertilizer, preparation method and use method thereof
An environmentally friendly, composite material technology, applied in fertilizer mixtures, applications, fertilization devices, etc., can solve problems such as inability to meet aquaculture, and achieve the effect of increasing fertilizer and water retention capacity, improving fertilizer supply capacity, and preventing release to the atmosphere.
Inactive Publication Date: 2009-02-18
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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In addition, my country has about 200,000 km 2 of the offshore waters are affected by pollution, about 40,000 km 2 The water
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[0028] 1. Mix and granulate attapulgite:monoammonium phosphate:polyacrylamide according to the ratio of (100-300):(5-16):(2-10) to make an environmentally friendly composite material for controlling the loss of nitrogen fertilizer As a fertilizer additive, the particle size is controlled at 2-6mm. The additive can be mixed with urea or ammonium sulfate in the ratio of 1:(4-9) and applied according to the conventional nitrogen fertilizer application method and usage amount.
[0029] 2. Mix attapulgite:monoammonium phosphate:polyacrylamide according to the ratio in 1, and then stir and mix with nitrogen fertilizer to use as a nitrogen fertilizer synergist.
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The invention discloses an environmental friendly composite material which can control the loss of nitrogenous fertilizer. Raw material components consist of active mineral soil, polymer material and monoammonium phosphate. The active mineral soil is attapulgite, sepiolite, fly ash or other similar low-cost active material or any mixture thereof. The polymer material is chitosan, polyacrylamide, plant starch and natural degradable environmental friendly material or any mixture thereof, which has the effect of flocculation and adsorption. The composite material is consistent with the immobilized phase of nitrogen and fertilizer needed by plant growth. Nitrogen is absorbed by crops fully, which reduces the usage amount of fertilizer and moreover reduces the risk of loss or volatilization for nitrogen. The material used by the method is environmental friendly and can not cause environmental pollution or health problem which includes the harms to wild animals, beneficial insects or plants.
Description
technical field [0001] The invention relates to an environment-friendly compound material and a production technology, which can reduce greenhouse gas emissions from chemical fertilizers and non-point source pollution of water body eutrophication. Background technique [0002] In 2002, the United Nations Environment Programme released the "Global Environment Outlook" report, which listed the deterioration of air and water pollution as the first of the eight major environmental problems. The most important cause of air pollution is greenhouse gas emissions, and water pollution is mainly caused by nitrogen, phosphorus, etc. entering the water body, resulting in eutrophication of the water body. A study shows that due to the extensive use and improper use of chemical fertilizers, 1.235 million tons of nitrogen flow into rivers and lakes through surface waters, 494,000 tons into groundwater, and 2.99 million tons into the atmosphere every year. Nitrogen enters the water body th...
Claims
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Login to view more IPC IPC(8): C05G3/08C05G3/90
CPCY02P60/21
Inventor 乔菊蔡冬清卞坡姜疆余增亮吴跃进
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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