Plant growth regulator for enhancing drought resistance of rice and its preparation method and application

Abstract

The invention discloses a plant growth regulator for enhancing drought resistance of rice and a preparation method and application thereof. The preparation method comprises the steps of mixing a pesticide active compound spermine, natural brassinolide and malic acid according to a certain proportion, and a certain amount of auxiliary filler is added. The concentration of spermine ranges from 100 mg / L to 300 mg / L, the concentration of natural brassinolide ranges from 0.2 mg / L to 0.4 mg / L, and the concentration of malic acid ranges from 100 mg / L to 300 mg / L. The plant growth regulator is used for resisting to drought damage caused by the high temperature or water shortage, after the plant growth regulator is sprayed, stomatal conductance of leaves is reduced, and water consumption due to transpiration is lowered; the chlorophyll content is increased, and photosynthesis assimilation substance accumulation is increased; root activity is enhanced, water absorption capacity and water retention capacity of plants are enhanced, the effects of stabilizing the yield and increasing the yield are achieved, and the plant growth regulator and the preparation method and application thereof provide a new rice plantation technology for alleviating damage of rice regions which are prone to drought damage in China.

Description

technical field [0001] The invention belongs to the technical field of rice planting, and in particular relates to a plant growth regulator for enhancing the drought resistance of rice, a preparation method and application thereof. Background technique [0002] Rice is the most important food crop in my country, and it is also the crop with the largest water consumption. Its production water accounts for about 50% of the country's total water consumption; at the same time, China is a country with severe drought and water shortage, with a total fresh water resource of 2.8 trillion cubic meters meters, accounting for 6% of global water resources, second only to Brazil, Russia and Canada, ranking fourth in the world, but per capita is only 2,200 cubic meters, only 1 / 4 of the world's average level, and the world's 13 lowest per capita water resources one of the poorest countries. Therefore, drought caused by water shortage is the main factor limiting rice production. The tempora...

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Problems solved by technology

[0003] The object of the present invention is to provide a plant growth regulator that enhances the drought resistance of rice and its preparation method and application, aiming at solving the problem of rice drought and water shortage in the northern and southern rice regions of my country, regulating the growth of rice plants, and reducing the yield reduction caused by drought harm problem

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