Effect improved compound fertilizer

Abstract

The invention discloses effect improved compound fertilizer. The effect improved compound fertilizer comprises, by part, 35-65.2 parts of urea with 46 percent of N, 8-40 parts of monoammonium phosphate with 10 percent of N and 50 percent of P2O5, 6.7-30 parts of potassium chloride with 60 percent of K2O or 8-30 parts of potassium sulphate with 50 percent of K2O, 0-15 parts of ammonium sulfate with 21 percent of N and 0.1-1 part of nitrogen controlled synergist (AHE). According to the AHE, the proportion of sodium tetraphenylborate, copper sulfate, zinc oxide, ammonium citrate and potassium thiosulfate is 3: 2: 2: 1: 2-3. The effect improved compound fertilizer reduces the hydrolysis rate of urea in the fertilizer, restrains the activity of nitrobacteria in soil, the 6-8 millesimal of AHE is added into the effect improved compound fertilizer, the nitrogen use efficiency reaches to 44 percent, the nitrogen use efficiency is improved by 23 percent, the nitrogen loss is reduced by 22.6 percent, and the crop is increased by 8-16 percent. One-time fertilize application is carried out in spring, and labor cost is saved.

Description

technical field [0001] The invention relates to a synergistic chemical fertilizer, in particular to a chemical fertilizer containing nitrogen, phosphorus, potassium and a nitrogen-controlling synergist (AHE) for increasing the yield of crops. Background technique [0002] At present, the compound fertilizers and compound fertilizers used in my country's agriculture are compound fertilizers containing nitrogen, phosphorus, and potassium or two of them (National Standard GB15063-2009 "Compound Fertilizer-Compound Fertilizer" "). Nitrogen in compound fertilizers is necessary for the growth of crops, and it is also the nutrient element with the largest demand. The nitrogen source raw materials used in manufacturing are mainly nitrogen-containing chemical fertilizers such as urea, ammonium sulfate, ammonium chloride, and monoammonium phosphate. The compound fertilizer produced with these fertilizers as raw materials has a low nitrogen utilization rate, and its nitrogen utilizatio...

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Problems solved by technology

The second reason is: the volatilization loss of ammonia caused by nitrification-denitrification, the volatilization loss of ammonia, in addition to urea, the loss of nitrogen in ammonium nitrogen fertilizers such as ammonium sulfate, ammonium chloride, and monoammonium phosphate in the compound fertilizer raw materials pathway is consistent

The third reason is leaching loss: nitrate nitrogen NO produced by nitrification 3 —N

Although it is nitrogen that can be absorbed and utilized by crops, because nitrate nitrogen has a negative charge, and soil colloids also have a negative charge, it will not be absorbed by soil colloids, and it is highly mobile in the soil and easily enters with water loss. Loss in water body (Wu Zhijie et al. "Principles and Applications of Slow Release / Controlled Release" Science Press, 2003:; 17)

The above three points are the main reasons for the low nitrogen use efficiency of compound fertilizers

Due to the low nitrogen utilization rate of compound fertilizers, the lost nitrogen enters the atmosphere and water bodies in various forms, resulting in huge air and water pollution and environmental pollution.

[0005] As of 2010, there were 4,400 licensed compound fertilizer production enterprises in my country, with a total production capacity of more than 200 million tons and an actual annual output of 50 million tons. The average nitrogen content of compound fertilizers is more than 15%. Calculated at a rate of 35%, the annual loss of pure nitrogen volatilization and leaching caused by the use of compound fertilizers in my country alone reaches 4.875 million tons. The production of 1 ton of pure nitrogen requires 1.33 tons of standard coal, and the standard coal price in 2010 is 960 yuan per ton According to calculations, the annual loss of standard coal due to low utilization rate of nitrogen fertilizer in my country alone is 6.48 million tons, and the economic loss is 6.22 billion yuan. The environmental pollution loss caused by volatile leaching to the atmosphere and water bodies is immeasurable

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