A cultivation method for deep application of fertilizers to improve yield and nitrogen utilization rate of no-tillage mid-season rice

Abstract

The invention discloses a fertilizer deep application and cultivation method for increasing the no-tillage middle-season rice yield and improving the nitrogen use efficiency. The method comprises thesteps of 1, field pretreatment, wherein an amides systemic herbicide is applied after preceding crops are harvested and before seedling slinging; 2, dry rice-nursery, wherein hybrid rice is selected,seeds are aired on a clear day before sowing, and the seeds are placed in flowing clear water and soaked in the daytime and are fished out, spread and aired in the night; 3, fertilizer deep application, wherein deep application is conducted on a base fertilizer, broadcasting is conducted on an additional fertilizer, the base fertilizer is a nitrogen-phosphorus-potassium mixed fertilizer, deep application can also be conducted after nitrogen, phosphorus and potassium fertilizers are mixed, and the later additional fertilizer is mainly urea; 4, filed seedling slinging, wherein the fertilizer deep application is completed, irrigation field steeping is conducted before seedling slinging; 5, water management, wherein at the seedling stage, a shallow-water layer is kept, at the tillering stage,intermittent irrigation is conducted, and at the yellow ripening stage, air-drying is conducted after the dough stage; 6, filed management. The fertilizer deep application and cultivation method for increasing the no-tillage middle-season rice yield and improving the nitrogen use efficiency is easy to conduct and convenient to operate, effectively reduces ammonia volatilization and nitrogen loss of a no-tillage rice field, improves the nitrogen use efficiency of the no-tillage rice field, and increases the yield of the no-tillage rice field.

Description

Technical field [0001] The invention relates to the field of rice cultivation, and more particularly to a fertilizer deep application cultivation method for improving rice yield and nitrogen fertilizer utilization. Background technique [0002] Rice occupies an extremely important position in food production. In recent years, due to the large number of rural labor transfers to cities, labor shortages; at the same time, traditional rice cultivation is time-consuming, intensive, and costly. No-tillage rice fields have been widely promoted in southern my country. In 2008, the area of ​​promotion and application in my country reached 1.33. Million hectares. However, rice production in my country is heavily dependent on the application of nitrogen fertilizer, and there is a general problem of excessive nitrogen application in rice production in China. In 2012, my country's total nitrogen fertilizer consumption reached 49.5 million tons, and only 4.1% was absorbed by rice growth. Usi...

AI Technical Summary

Problems solved by technology

[0004] Based on the defects of fertilization technology existing in the prior art, in order to solve the problems of nitrogen pollution and yield decline caused by low nitrogen utilization rate in no-tillage paddy fields, the object of the present invention is to provide a kind of fertilizer deep application that improves rice yield and nitrogen utilization rate cultivation method

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