Slow-release water-retaining compound fertilizer composition

Abstract

The invention relates to a compound fertilizer for field crops planted in arid regions, semiarid regions and desert regions, and particularly relates to a slow-release water-retaining compound fertilizer composition. The slow-release water-retaining compound fertilizer composition is prepared from the following raw materials in parts by weight: 5-6 parts of urea, 5-6 parts of potassium dihydrogen phosphate, 15-16 parts of diammonium phosphate, 2-3 parts of fulvic acid, 13-18 parts of humic acid, 8-10 parts of attapulgite, 1-1.5 parts of ethylene diamine tetraacetic acid, 1-1.5 parts of citric acid, 15-16 parts of ferrous sulfate, 12.5-14 parts of calcium carbonate, 7-8 parts of zinc sulfate, 4.5-6 parts of borax, 1-1.5 parts of iodine ore powder and 1-1.5 parts of molybdenum ore powder. The slow-release water-retaining compound fertilizer composition has the functions of salt tolerance, drought resistance, water saving, water retaining, nutrition, slow release, rootage, soil structure improvement and the like, can enhance the effective utilization rate of the fertilizer and reduce the pollution to soil, and is applicable to forest planting, desert control, field crops, greenhouse vegetables, fruit trees, traditional Chinese medicinal materials, flowers and the like in arid and semiarid regions.

Description

technical field [0001] The invention relates to a compound fertilizer for field crops planted in arid, semi-arid and desert areas, in particular to a slow-release water-retaining compound fertilizer composition. Background technique [0002] Agriculture is the foundation of the national economy and the basic material condition for social development, while fertilizer and water are two important factors affecting agricultural production. [0003] First, chemical fertilizers play an important role in agricultural production and are the largest material investment in agricultural production, accounting for about 50% of all productive expenditures. According to statistics, the utilization rate of nitrogen fertilizer in my country is only 30%-35%, the utilization rate of phosphorus fertilizer is 10-25%, and the utilization rate of potassium fertilizer is 35-50%, which is lower than the world average level. The utilization rate of nitrogen fertilizer alone is lower than the world ...

AI Technical Summary

Problems solved by technology

There are large areas of arid, semi-arid and desert areas in the world. In these areas, water is scarce all the year round. Most of the rainwater in the rainy season is lost or evaporated. Irrigation water is often lost due to evaporation or infiltration, and cannot be fully utilized.

Solving the problem of water shortage and low utilization rate in arid, semi-arid and desert areas is a subject of research by people in the industry