Controlled-release fertilizer special for soybeans

Abstract

The invention relates to controlled-release fertilizer special for soybeans. The controlled-release fertilizer comprises nitrogen fertilizer, phosphate fertilizer, potassium fertilizer, sulfur fertilizer, zinc fertilizer, iron fertilizer and molybdenum fertilizer. In the controlled-release fertilizer, effective chemical elements include, by weight of pure nutrients, 19-21% of nitrogen, 9-11% of phosphorus pentoxide, 15-17% of potassium oxide, 0.41-0.82% of sulfur, 0.4-0.7% of iron, 0.4-0.8% of zinc, 0.3-0.4% of molybdenum and 7-9% of humic acid; the nitrogen fertilizer includes controlled-release nitrogen fertilizer, and the content of the nitrogen in the controlled-release nitrogen fertilizer is 38-53% of the total content of the nitrogen in the nitrogen fertilizer. The controlled-releasefertilizer special for the soybeans has the advantages that the ratio of fertilizer nutrients is reasonable and accords with the nutrient demand of the whole growth period of the soybeans, the fertilizer utilization rate is high, and the input and labor costs for top dressing are saved; appropriate amounts of the iron fertilizer and the zinc fertilizer are added, so that the content of the zinc in soybean seeds can be increased, and the foundation is laid for the improvement of soybean quality and economic benefits.

Description

technical field [0001] The invention relates to a controlled-release fertilizer, in particular to a special controlled-release fertilizer for soybeans suitable for simultaneous sowing of seed fertilizers. Background technique [0002] The technical background related to the present invention will be described below, but these descriptions do not necessarily constitute the prior art of the present invention. [0003] Soy is the main source of vegetable protein and vegetable oil for humans. In the world, soybean is being recognized and accepted by more and more people as a healthy food, and the production of soybean has been highly valued both at home and abroad. However, with the adjustment of the agricultural structure, the soybean area decreased slightly, and some people one-sidedly believed that soybeans could fix free nitrogen in the air through rhizobia, so that fertilization could be avoided. total decline. This poses a serious threat to national food security. [0...

AI Technical Summary

Problems solved by technology

In recent years, in the process of soybean planting, most soybeans have been intercropped with high-stalk crops such as corn and sorghum. Farmers mostly rely on experience to fertilize, which can easily lead to an imbalance in nutrient input and damage the balance of soil nutrients, resulting in low and unstable soybean yields.

Unscientific application of chemical fertilizers can easily lead to nutrient imbalance, soil compaction, decline in soil fertility, and insufficient organic matter. The nutritional quality of soybeans decreases, the yield is low, and the stress resistance is poor. The soybean yield has been further increased.

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