Composite fertilizer containing magnesium ammonium phosphate and polyglutamic acid

Abstract

The invention discloses composite fertilizer containing magnesium ammonium phosphate and polyglutamic acid, wherein the weight ratio of the polyglutamic acid to the magnesium ammonium phosphate is 1 to 100-10000, preferably 1 to 200-800. The experimental result indicates that the composite fertilizer provided by the invention can regulate the growth of crops well, improve disease resistance and stress resistance, promote the healthy effect of the crops and increase the yield of the crops.

Description

technical field [0001] The invention belongs to the technical field of agricultural chemical fertilizers, and relates to a functional compound fertilizer, in particular to a compound fertilizer containing magnesium ammonium phosphate and polyglutamic acid. Background technique [0002] Magnesium ammonium phosphate (magnesium ammonium phosphate) is commonly known as struvite because it was first discovered in bird droppings. It is a white inorganic crystal mineral with an orthorhombic crystal system. The crystals are often in the shape of axes, wedges, short columns or thick plates. The relative density is 1.71, the relative molecular weight is 245.43, the solubility in cold water is very low, it is easily soluble in hot water and dilute acid, insoluble in ethanol, and decomposes in alkali solution. Magnesium ammonium phosphate has low solubility and does not damage the root system of crops. It can meet the nutrient requirements of crops in different periods, promote crop gro...

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Problems solved by technology

[0004] At present, in the process of planting agricultural crops, due to the long-term unreasonable use of fertilizers and pesticides, such as the application of high-nitrogen, high-phosphorus and other chemicals to regulate crop growth, increase crop yield, and long-term application of chemical phosphorus-containing pesticides, the existing in the soil Excessive concentration of a single nutrient will not only cause an excessive stock of phase reactions in the soil, but also produce harmful substances in the soil, and become the main factor causing soil compaction in some areas, resulting in a decrease in crop yield and a decrease in the quality of agricultural products, which violates the soil ecology. The natural development law of the environment, therefore creating new types of fertilizers, rationally applying fertilizers, improving the comprehensive utilization efficiency of fertilizers, and activating soil life are important means for the fertilizer industry to achieve sustainable development

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