Micro-spraying high-yield high-efficiency method for cultivating wheat via reduced water and fertilizer and increased times of spraying

Abstract

The invention belongs to the technical field of winter wheat cultivation in north China, and relates to a cultivation method for providing water saving, high yield and high-efficiency utilization of water and nitrogen resources by optimizing a water and fertilizer supply mode through reduced water and fertilizer and increased times of micro-spraying, in particular to a micro-spraying high-yield high-efficiency method for cultivating wheat via reduced water and fertilizer and increased times of spraying. The method is based on water saving and aims at high yield and high efficiency, the technical steps of wheat land preparation, seeding, compaction, fertilization, irrigation and the like are optimally integrated, the coordination of irrigation and nitrogen fertilizer supply with a main rootdistribution area is achieved through reduced quantity and increased times of micro-spraying under water and fertilizer integration, water and nitrogen fertilizer supply to the upper soil in the keygrowth period of winter wheat is ensured, the water-nitrogen absorption ratio after flowering is increased, production after flowering is ensured, grain weight is increased, yield and water-nitrogen utilization efficiency are increased, leaching of nitrate nitrogen to deep soil is relieved, and environment protection is facilitated.

Description

technical field [0001] The invention belongs to the technical field of wheat cultivation in North China, and specifically relates to a high-yield and high-efficiency cultivation method for wheat by micro-spraying of water and fertilizer. Background technique [0002] my country is a country with a shortage of water resources, especially in North China, one of the main grain-producing areas, where water resources are seriously in short supply. The agricultural water in this area mainly comes from groundwater irrigation. In order to compress groundwater and realize sustainable agricultural development in North China, wheat Production requires efficient water-saving irrigation techniques. At present, in wheat production, the irrigation water consumption per mu during the growth period is 150-200m 3 , and the flood irrigation method is often used, the amount of irrigation is difficult to control accurately, often resulting in excessive irrigation and low water use efficiency. I...

AI Technical Summary

Problems solved by technology

However, there are still many deficiencies in the research on the application of micro-sprinkler irrigation to winter wheat. The impact of irrigation frequency, nitrogen fertilizer amount and irrigation amount on winter wheat yield formation and water and nitrogen resource utilization efficiency under the condition of micro-sprinkler irrigation with water and fertilizer is still unclear.