Slow-release type fertilizer special for rice and preparation method thereof

Abstract

The invention discloses a slow-release type fertilizer special for rice and a preparation method thereof. The fertilizer is prepared from, by weight, 10-40 parts of fallen leaves, 10-40 parts of phosphate rock powder, 5-25 parts of bean dregs, 1-10 parts of copper sulfate, 1-15 parts of sludge, 10-30 parts of monoammonium phosphate, 1-15 parts of chicken manure, 0.5-8 parts of sodium borate, 10-60 parts of urea, 1-10 parts of sodium humate, 5-25 parts of clay and 10-30 parts of potassium sulfate. The fallen leaves, the phosphate rock powder, the bean dregs, copper sulfate, the sludge, monoammonium phosphate, the chicken manure, sodium borate, urea, sodium humate, the clay and potassium sulfate are mixed and stacked for 4 h to 5 h, stirring and mixing are conducted again, granulation is conducted after drying is conducted, and the slow-release type fertilizer special for the rice is obtained. According to the slow-release type fertilizer special for the rice, various elements are slowly released by stage to supply nutrient elements for growth of the rice, the preparation method is simple, feasible and suitable for large-scale implementation, and the yield of the crops is increased by 10% to 20% on average by applying the fertilizer.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a slow-release special fertilizer for rice and a preparation method thereof. Background technique [0002] Rice (scientific name: Oryza sativa) is a kind of herbaceous Oryza genus, and it is also the most important and oldest kind of grain in Oryza genus. It is also called Asian cultivated rice. Rice likes high temperature, high humidity, and short sunshine, and is not strict with soil, but paddy soil is the best. The minimum temperature for seedling germination is 10-12°C, and the optimum temperature is 28-32°C. The average daily temperature in the tillering stage is above 20°C, and the suitable temperature for panicle differentiation is about 30°C; the low temperature prolongs the differentiation of branches and spikelets. The optimum temperature for heading is 25-35°C. The optimum temperature for flowering is about 30°C, if it is lower than 20°C or higher than 40°C, fer...

AI Technical Summary

Problems solved by technology

Existing rice fertilizers generally do not have a slow-release function. In addition, the nutrients in the fertilizer are not comprehensive, resulting in the ineffective absorption and utilization of nutrients in a part of the fertilizer during the growth of rice, resulting in malnutrition in the later stage. In addition, reasonable Adjust the timing of fertilization, resulting in nutrient imbalance and low fertilizer absorption and utilization, resulting in low rice yield