Special environment-friendly slow-release fertilizer for vegetables

Abstract

The invention discloses a special environment-friendly slow-release fertilizer for vegetables. The special environment-friendly slow-release fertilizer comprises, by weight, 80-100 parts of macroelement fertilizers, 25-45 parts of fermented horse manure, 15-35 parts of camellia oil cake, 5-15 parts of canal mud, 2-6 parts of fermented waste from slaughter houses, 1-2 parts of vermiculite powder, 1-2 parts of diatomaceous earth, 1-2 parts of calcined kaolin, 0.5-1.2 parts of sodium selenite, 1-2 parts of molybdenum-containing mineral waste residues, 1-2 parts of calcium carbonate and 4-8 partsof binders. The macroelement fertilizers comprise, by weight, 40-60 parts of urea compounds, 15-35 parts of potassium nitrate and 10-20 parts of calcium triple superphosphate. A process for preparingthe urea compounds includes mixing fly maggot protein powder and sodium hydroxide solution with each other to obtain a first mixture; heating and stirring the first mixture; adding urea and polycarboxylic acid into the first mixture and uniformly mixing the urea, the polycarboxylic acid and the first mixture with one another to obtain a second mixture; adding polynosic into the second mixture anduniformly mixing the polynosic and the second mixture with one another to obtain the urea compound.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a special slow-release fertilizer for green and environment-friendly vegetables. Background technique [0002] Vegetables are rich in vitamins, and they consume a large amount of food in people's daily life. They are equally important to food in the human diet structure, and their output and planting area have a clear upward trend. It plays an important role in people's livelihood and national economy. The economic benefits of vegetables depend on the yield and production cost of vegetables. The high quality of vegetables is the goal that people relentlessly pursue, and the effective use of limited land resources to improve the yield and quality of vegetable crops is the direction of people's efforts. [0003] Urea is a high-quality nitrogen fertilizer with high nitrogen content, fast fertilizer efficiency and large dosage. However, urea is often easily lost through volati...

AI Technical Summary

Problems solved by technology

However, urea is often easily lost through volatilization, leaching, decomposition and runoff during use, resulting in a low fertilizer utilization rate, which not only causes a great waste of chemical fertilizers, but also damages the atmosphere, water and soil that humans depend on for survival. create pollution