Special formulation fertilizer for rice

Abstract

The invention belongs to fertilizer technical field, more particularly relates to a rice special formula fertilizer, which is characterized in that effective elements of the fertilizer are calculated by weight percent of pure nutrient are nitrogen 25-15, phosphorus pentoxide 15-9, potassium oxide 20-12, silicon dioxide 5-0, calcium 8-0, sulphur 5-1 and zinc 2-1. Compared with the present technique, the rice special formula fertilizer of the invention has reasonable match, accords with the nutrient absorption law of rice, can promote rice growth obviously and raise rough rice output, increase economic benefits and improve rice nutriment quality. In application test, the rice special formula fertilizer of the invention increases the rice yield by 660-820 kg per hectare, increases income 756-146 RMB, increases crude protein, raw fat, crude fiber, nitrogenfree extract and crude ash by 4.1-8.6, 0.14-0.80, 0.4-0.8, 0.1-3.0, 0.4-1.0 percentage points respectively, increases brown rice rate, integral white rice rate, white rice rate of rice processed quality by 1.4%, 1.7% and 1.8% respectively, reduces chalkiness granule rate, chalkiness by 3.2% and 1.9% respectively, reduces content of amylose by 1.0%. In the meanwhile, the fertilizer utilization efficiency is raised by 5.1%-13.8%.

Description

technical field [0001] The invention belongs to fertilizers, in particular to a special formula fertilizer for rice. Background technique [0002] Rice is one of the main food crops that humans rely on for survival. Its sown area accounts for about 30% of the total grain area in my country, and rice production accounts for about 40% of the total grain output. Rice is the staple food of more than 60% of the population in my country, and the annual consumption of rice is about 190 million tons, accounting for 35% of the total grain consumption. Therefore, rice is the largest food crop in my country and bears the most important task of food security. [0003] In order to alleviate the pressure of population growth on food demand, my country has always regarded increasing the yield of rice per unit area as the main task of rice production. At present, the country's rice yield per unit area has exceeded 6t / hm 2 , which is higher than the world average level, and plays a very i...

AI Technical Summary

Problems solved by technology

[0005] In terms of fertilizer application technology, although a series of fertilization technologies have been created, such as "two promotions and one control", "stabilization before improvement", "ball fertilizer deep application", leaf age mode fertilization, soil testing formula fertilization, one-time full-layer fertilization, etc. However, due t