Leguminous crop seeding coated fertilizer and preparation method thereof

Abstract

The invention discloses a leguminous crop seeding coated fertilizer and a preparation method thereof. The leguminous crop seeding coated fertilizer is prepared from the following raw materials (in parts) by weight: a 4-6wt% HCl solution, zinc oxide powder, monopotassium phosphate, calcium superphosphate, chicken manure, indolebutyric acid, magnesium sulfate, amino chitosan, limestone, 50% carbendazim, a rhizobium bacterial agent, an azotobacter bacterial agent, corn bran, sugar residues, cellulose homogenate and water. Due to addition of microbial agents beneficial to leguminous crops and trace hormones for promoting rooting, the leguminous crops can root rapidly and can be prevented from being eaten by injurious insects in soil; as the limestone is calcined and the calcined material is crushed into granules, the granules can be relatively easily split, meanwhile root systems can be abraded by the granular limestone, and then rhizobium infection can be promoted to form root nodule; as the microbial agents are used in the fertilizer after being cultured for a certain time, the environmental suitability of the microbial agents can be improved, and the number of the microbial agents can be somehow increased.

Description

Technical field [0001] The invention belongs to the technical field of fertilizers, and specifically relates to a coating fertilizer during sowing period of leguminous crops and a preparation method thereof. Background technique [0002] The usual fertilizer coating has the first sulfur-coated urea technology, and then the thermosetting resin coating technology with Japanese characteristics. These resin materials are based on polyolefin and are formed by graft copolymerization with some organic polymers. The high polymer is mixed with a certain amount of inorganic mineral stone powder to make a coating material. The inorganic mineral stone powder used includes silicon, sulfur, gypsum, phosphate, zeolite powder, diatomite, bentonite, etc. The United States first successfully developed sulfur Coated urea, the film layer is composed of a sulfur-coated layer, a sealing layer and a dusting layer, which occupies an important position in today's sulfur-coated slow-release powder; [0003...

AI Technical Summary

Problems solved by technology

[0003] But the disadvantages are obvious: although the stone powder coating fertilizer can improve the soil mineral quality, it needs the addition of chemical organic matter to bond, mainly the addition of resin, but the preparation of slow-release fertilizer, the resin binder used in the coating varies. The proportion, addition amount and selection of types are problems. Improper control will affect the timely supply of fertilizers. Slightly improper control will cause the coating of stone powder to be easily cracked by moisture, sandy soil, and reduce the relative proportion of humus in the soil. Water and soil erosion is very unfavorable for long-term planning; on the other hand, the coating material of stone powder is used, and the stone powder itself has a certain thickness, which seriously affects the real effective content of the coated fertilizer. If the content of added nutrients is increased, the fertilizer will inevitably increase. Particle size, very unfavorable for dissolution and fertilizer balance issues