A technique for controlling the harm of winter wheat in late spring

Abstract

The invention provides a technology for controlling late spring coldness harm to winter wheat. According to a late spring coldness forming mechanism of winter wheat, good seeds and a good method are matched, preventive coping and remediation measures are combined, forming of cold injury of late spring coldness is controlled, late spring coldness harm is reduced, the technology includes the steps that late-spring-coldness-resistant varieties are selected, preventing measures are taken, it is hindered that cold air and currently warm air form a convection peak so that forming of cold injury of late spring coldness can be controlled, remediation measures are taken, the number of tillers is increased, quality of the tillers is improved, and stem loss is compensated for. By means of the technology, cold injury of late spring coldness is relieved or avoided, the number of the tillers per mu is increased, the number of spikes per mu is increased, the number of grains per spike and thousand kernel weight are increased, and the technology has great significance in the Huang-huai wheat region, in particular to late spring coldness control over wheat in the Shandong wheat region.

Description

technical field [0001] The invention relates to a method for controlling the harm of winter wheat in late spring, in particular to a method for controlling the harm of winter wheat in late spring by using improved varieties and methods. belongs to the field of agriculture. Background technique [0002] Late spring coldness (Late spring coldness) refers to the weather phenomenon in which the temperature rises rapidly in early spring (generally refers to March), and the temperature in late spring (generally refers to April or May) is lower than normal years. Long-term rainy weather or frequent cold air invasion, or strong radiative cooling on clear nights under the control of continuous cold high pressure can easily cause late spring cold. The climate in early spring is changeable. If the cold air is strong, the temperature can drop sharply below 10°C, even in rainy and snowy weather. At this time, it is often sunny during the day, which makes people feel "the warm wind mak...

AI Technical Summary

Problems solved by technology

However, in recent years, due to frequent occurrence of natural disasters, especially early spring frost damage (late spring cold), it has had a greater impact on Shandong wheat production

[0005] Late spring cold has a great impact on wheat, which can lead to a significant decrease in the number of spikes per spike and the number of grains per spike, resulting in reduced yields or even no harvest

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