Cold-resistant preparations for improving wheat's resistance to low temperature and cold damage and application method thereof

Abstract

The invention discloses cold-resistant preparations for improving wheat's resistance to low temperature and cold damage and an application method thereof. The cold-resistant preparations include a seed-soaking cold-resistant preparation and a foliar-spraying cold-resistant preparation, the seed-soaking cold-resistant preparation is composed of disodium hydrogen phosphate, potassium dihydrogen phosphate, betaine, nitro ammonium humate and sodium nitroprusside, and wheat seeds are added into the seed-soaking cold-resistant preparation for soaking for 8-12h before seeding; the foliar-spraying cold-resistant preparation is composed of disodium hydrogen phosphate, potassium dihydrogen phosphate, sucrose, urea, betaine, nitro ammonium humate, sodium nitroprusside and surfactant, and foliar spraying is performed for 1-2 times after wheat seedlings green back at spring of the next year and / or when booting starts to prevent low-temperature late spring coldness. The cold-resistant preparations can effectively improve tolerance of wheat to cold temperature and cold damage, so that the wheat can have strong growing trend at low temperature, maintain high photosynthesis assimilation performance when encountering low temperature and cold damage at early spring and acquire high yield.

Description

technical field [0001] The invention relates to the technical field of wheat resistance to low-temperature chilling damage, in particular to a cold-resistant preparation for improving wheat resistance to low-temperature chilling damage and an application method of the cold-resistant preparation. Background technique [0002] Wheat is a low temperature tolerant crop, but when the temperature is lower than the temperature intensity that it can withstand in different growth stages, it will also cause low temperature chilling injury. Wheat seedlings have strong cold resistance during the vernalization development stage, but their cold resistance decreases after completing vernalization and further declines after completing the photoperiod reaction; , During the young period of the tissue, the ability to resist low temperature is greatly reduced. In recent years, due to the general increase in global temperatures, my country has also proposed the "two-night technology". Due to t...

AI Technical Summary

Problems solved by technology

[0003] Research on the mechanism of plant resistance to low temperature and chilling damage shows that low temperature and chilling damage will seriously affect plant growth and reduce crop yield

The main reason for the damage to wheat plants caused by low temperature and chilling injury is the imbalance of the thermodynamic balance of the plant body, which in turn causes the disorder of metabolic regulation; in addition, it will also cause the disturbance of the plasma membrane, which will cause abnormal reactions on the membrane; the accumulation of reactive oxygen species (ROS) will lead to the synthesis of chlorophyll. The slowing down of the rate or the degradation of chloroplasts, the destruction of the electron transport chain, changes the structure and activity of various organs in the photosynthesis process, resulting in the obstruction or damage of the photosynthesis pathway

Reasonable cultivation and management can partially alleviate plant low temperature chilling damage, but the operation is complicated and the cost is high

Although breeders have achieved certain results by cultivating and screening crop varieties resistant to cold damage, it is still not very ideal from the current status quo.

Images