Agent and method for effectively relieving high-temperature hazard of wheat in filling stage

Abstract

The invention discloses an agent and a method for effectively relieving high-temperature hazard of wheat in the filling stage. The agent is prepared from epibrassinolide with mass concentration of 0.08-0.12 g / L, an appropriate amount of anhydrous ethanol and the balance of water, and pH value of the agent is 6.6. The method for effectively relieving high-temperature hazard of wheat in the fillingstage comprises following steps: S1, epibrassinolide is taken and dissolved by an appropriate amount of anhydrous ethanol, a mixed solution is added to water, and the agent is obtained; S2, before spraying, the agent is diluted 1,000 times by water, and an epibrassinolide solution with final concentration of 0.1 mg / L is prepared; S3, the epibrassinolide solution is sprayed to the whole wheat plants. The agent can relieve the high-temperature hazard to wheat, is prepared with a simple, easy, reliable method, is harmless to humans and livestock and facilitates popularization and application.

Description

technical field [0001] The invention relates to the technical field of regulating the physiological process of cereal crops in the later stage of growth, in particular to a medicament and a method for effectively alleviating the high temperature damage of wheat during the grain filling stage. Background technique [0002] Wheat is one of the main food crops in my country, and its yield is related to the food security of our country. The grain filling stage of wheat is a critical period that determines the final yield and quality of wheat, and the optimum temperature for this stage is 20-24°C (Yue Pengli et al., 2016). Studies have shown that high temperatures exceeding 30°C can interrupt wheat grain filling, accelerate wheat senescence, shorten the grain filling period, and reduce yield (Shi Huiqing et al., 2011; Cao Caiyun et al., 2016). Studies have found that high temperature will shorten the filling period, decrease the filling rate, and reduce the grain weight and yiel...

AI Technical Summary

Problems solved by technology

Li Jing et al. (2014) found that epibrassinolide can improve the growth rate and fluorescence parameters of asparagus, and has high temperature resistance; Li Yong et al. (2015) studied that spraying epibrassinolide (BR) is beneficial to improve Photosynthetic performance and dry matter accumulation of wheat; Gong Yanlong et al. (2016) found that spraying epibrassinolide during the young panicle differentiation stage was beneficial to increase the number of rice spikes; Zang Jinping et al. (2017) found that spraying The application of brassinosteroids is beneficial to promote the transportation and distribution of organic matter produced by the light action of maize leaves; but whether it can alleviate the damage of high temperature and heat damage to the grain filling stage of wheat and when the specific spraying effect is the best has not been reported.

Images