A compound agent for efficiently reducing the leaf base angle of rice and its application

Abstract

The invention discloses an efficient rice basic leaf angle decreasing compound and application thereof. A rice basic leaf angle refers to an included angle between a stalk and a leaf base. The compound is prepared from paclobutrazol, dimethyl sulfoxide, monopotassium phosphate, azone, Tween 80 and water according to a certain proportion. A preparation method includes steps: (1) proportionally weighing paclobutrazol, adding dimethyl sulfoxide to dissolve, adding dissolved solution into water at 60-90 DEG C, and continuously stirring to obtain mixed solution A; (2) proportionally weighing monopotassium phosphate, azone and Tween 80, adding the mixed solution A, and continuously stirring to well mix to obtain the efficient rice basic leaf angle decreasing compound. Under the condition of low consumption of paclobutrazol, the efficient rice basic leaf angle decreasing compound is capable of remarkably decreasing basic leaf angles of small rice seedlings and large rice seedlings to greatly increase chlorophyll content, specific leaf weight and yield of the small rice seedlings and the large rice seedlings, and rice yield is increased by 8.01%-12.39%.

Description

technical field [0001] The invention belongs to the technical field of plant growth regulators, and in particular relates to a compound agent for efficiently reducing the base angle of rice leaves, and also relates to a preparation method of the compound agent for efficiently reducing the base angle of rice leaves, and also relates to the preparation of the compound agent for reducing the base angle of rice leaves. The application in rice production is suitable for use during the 1st leaf stage of rice to the 2nd day after rice ears are completely pulled out of the leaf sheath. Background technique [0002] Rice is the main grain crop in China, accounting for 38% of the country's total grain output. With population growth, China's food demand will continue to grow rigidly. China is the world's largest rice consumer, with more than 60% of the population taking rice as a staple food. The stable increase of rice production plays a very important role in ensuring national food...

AI Technical Summary

Problems solved by technology

Although it has been reported in the literature that the leaf base angle of rice mutants whose synthesis (or signal transduction) of brassinosteroids is blocked is smaller than that of normal rice, the growth and development process of these mutants will be affected, and the yield of mutants is lower than that of normal rice. Mutants cannot be promoted

It has been reported that the treatment of brassinosteroid synthesis inhibitors can reduce the base angle of rice leaves, but because these inhibitors are very expensive, they cannot be widely used in production at present

In production, there are reports of using paclobutrazol to reduce the base angle of rice leaves, but the effect is not ideal; only when the amount of paclobutrazol is used in a large amount can the rice leaf base angle be significantly reduced, and the use of paclobutrazol in large quantities will bring harm to the environment

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