Based on technical parameters such as soil fertility level, soil nitrogen supply rate, chemical fertilizer utilization rate, and nitrogen requirement per 100 kilograms of rice production, the project identified three types of soils with high, medium, and low fertility, and 11 types of three yield stages. Nitrogen rate; using the formula for calculating the amount of fertilizer, calculate the amount of nitrogen and the proportion of nitrogen, phosphorus, or potassium fertilizer that can achieve the target yield under different soil fertility. After years of demonstration and application of the technology, the technology has proved to be scientifically strong and simple in approach. It has improved the yield and quality of rice, enhanced the resistance of rice, reduced the pests and diseases, and caused soil pollution due to the indiscriminate use of chemical fertilizers. And the cost is reduced and the economic benefits are improved. The disease is generally reduced by 7.5%, insect pests are also significantly reduced, and the rate of grain hulls is reduced, increasing the grain weight by 1,000, which can increase the production of 40 kg of rice per acre and reduce the cost of chemical fertilizers and pesticides. The fertilization technique has a simple calculation method, high accuracy, easy use, easy promotion, significant social and economic benefits, and should be popularized in the Yangtze River basin and in similar areas.
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