High-cold area winter wheat life limit division and north shift and freezing injury check planting method

Abstract

The invention discloses a high-cold area winter wheat life limit division and north shift and freezing injury check planting method. According the invention, the phenomenon that the winter wheat seedling emerges from the surface of the earth in corresponding snow cover in high-cold area to realize overwintering green returning is regarded as the winter wheat life limit, and the winter wheat life limit is divided and shifted north, wherein the step of winter wheat division and north shift comprises the division of a planting area and the division of the planting surface down-shift life support interval. The planting area is divided into a safe area, a relatively safe area and a dangerous area; the safe area includes the forest seas and snow rivers under the effect of forest climate; the relatively safe area includes the plains under relatively thick snow cover, depressions and shady slopes of snowfield; and the dangerous area includes the downlands under relatively thin snow cover, slopes exposed to sun and suburbs influenced by the urban greenhouse effect. The planting surface down-shift life support interval is divided into a mechanical tillage interval and a non-mechanical tillage interval. The planting method comprises the following steps of: performing a freezing injury check experiment of the north-shift winter wheat overwintering; determining the planting mode of the winter wheat of the variety by use of corresponding measures; and finally maximizing the north-shift planting area of the high-cold area winter wheat.

Description

technical field [0001] The invention belongs to the divisional planting technology of crops, and in particular relates to the northward shifting of the life limit division of winter wheat in the alpine region and the inspection and planting method for freezing damage. Background technique [0002] The northward movement of winter wheat has become a focus of agricultural research and development in northern countries since the 1970s. Countries including the United States, Canada, Japan, Russia, and Ukraine have moved the northern boundary of winter wheat north by 2 to 3 latitudes, such as Canada planted winter wheat at 51 degrees north latitude; Japan planted winter wheat in the spring wheat area of ​​Hokkaido; Russia planted winter wheat in Siberia and Novosibirsk. [0003] my country’s winter wheat northward movement started relatively late. According to the State Administration of Foreign Experts Affairs, the Ministry of Agriculture, and the Ministry of Science and Technol...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method of northward shifting of winter wheat life limit zoning and freezing damage inspection and planting method in high cold area, so as to solve the unstable phenomenon of regreening of winter wheat in the same plot, same variety, and same planting method in alpine area. The global problem of good greening, poor greening in some years, and complete death in some years, find out the irresistible cause of death of winter wheat, demarcate the safe area and risk area of ​​winter wheat life and the corresponding planting mode, and integrate each variety of winter wheat. Wheat achieves life limit zoning and moves northward to maximize planting area