Controlled-release fertilizer special for nectarines and preparing method of controlled-released fertilizer

Abstract

The invention discloses a controlled-release fertilizer special for nectarines. The controlled-release fertilizer is composed of a material A, a coating A, a material B and a coating B. The material A is prepared from urea, potassium fulvic acid, calcium superphosphate, manganese sulfate, boric acid and bentonite. The coating A is prepared from carboxymethyl starch, carboxymethyl cellulose and acetic acid starch. The material B is prepared from urea, monopotassium phosphate, ammonium dihydrogen phosphate, magnesium sulfate, wormcast, rape seed cakes, tea residues, vermiculite and seaweed gel. The coating B is prepared from alcohol acid resin, chitosan and polyvinyl alcohol. The unique two-layer coating treatment is adopted for the controlled-release fertilizer special for nectarines, release of nutritional ingredients in different stages is well controlled, and the material A and the material B which are wrapped inside with different composition proportions meet the nutritional ingredient demands of nectarines in different stages; by means of the design, the labor intensity of people for fertilizer application of multiple times can be reduced, and the trouble of blending fertilizer at different stages is also saved; due to the fact that the fertilizer has the controlled-release effect, the utilization rate of matter is high, fertilizer application cost is reduced, meanwhile, the yield of nectarine fruits can be increased by 20-30%, and good economic benefits are achieved.

Description

technical field [0001] The invention belongs to the field of fertilizer manufacture, and in particular relates to a special controlled-release fertilizer for nectarines and a preparation method thereof. Background technique [0002] After the 1980s, Chinese peach breeders used nectarine varieties introduced from abroad to crossbreed with common peach varieties in my country, and bred a series of nectarine varieties with sweet flavors and adapted to the environmental and climatic conditions of our country. The promotion of the area, especially in some emerging peach producing areas, the development area is much larger than that of ordinary peaches. my country's peach production is still dominated by ordinary peaches, and nectarines are welcomed by growers and consumers because of their smooth and hairless fruit surface, convenient picking and eating, and bright and beautiful appearance. , it is a kind of emerging fruit that is popular in the international market at present, th...

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Problems solved by technology

[0003] As we all know, the quality of fruit growth depends to a large extent on the quality of fertilizers. The ratio of fertilizer components and its function are two factors that reflect the value of fertilizers, and the ratio of nutrients required by different fruit plants is different. , and the nutrient content required by the same plant at different stages is also different. At present, most of the nectarines in the market use ordinary compound fertilizers and farm organic fertilizers, but there are few reports on special fertilizers for nectarines. Under the trend that nectarines will occupy a larger proportion in future peach production, the production of a high-quality special fertilizer for nectarines will have a good market prospect