Method for improving rice resistance to bacterial leaf blight and rice blast through spermine induction treatment

Abstract

The invention discloses a method for improving rice resistance to bacterial leaf blight and rice blast through spermine induction treatment. The method comprises the steps of preparation of planting land, seedling management and spermine induction treatment, wherein the step of spermine induction treatment comprises the sub-step of continuously irrigating a spermine solution with the concentration of 2 to 10 mmol / L (preferentially 2 to 5 mmol / L) to rice at an adult stage, wherein the daily irrigating amount of the amine solution per mu is 800 to1200 L, and the total irrigating time is 4 to 7 days. The method is easy to implement, simple and convenient to operate and quick in effect, the rice resistance to the bacterial leaf blight and the rice blast can be improved in the short time, loss caused when the bacterial leaf blight and the rice blast of rice outbreak can be effectively avoided, and economic benefits can be improved.

Description

technical field [0001] The invention belongs to the field of rice disease resistance research, and specifically relates to a method for improving rice resistance to bacterial blight and rice blast by short-time spermine treatment, and the method is applicable to rice planting and resistance to bacterial blight and rice blast in any area of ​​my country Rice growth resistant to blast disease. Background technique [0002] Rice is one of the important crops for human survival. It is generally cultivated in flooded lands in coastal plains, tidal deltas and river basins in tropical, subtropical and temperate regions. [0003] Bacterial blight is one of the main diseases of rice. There are yellow-green spots on the leaf tips and edges of diseased plants, which later develop into pale and yellow-brown long stripes along the veins, and finally turn gray and die. Diseased plants are prone to lodging, and the rate of false ears of rice increases. The fungus overwinters on seeds and ...

AI Technical Summary

Problems solved by technology

It occurs to varying degrees in the southern and northern rice regions of my country. In the popular year, the yield is generally reduced by 10-20%, and the severe reduction is as high as 40-50%. It is in the shape of fire. Although some rice plants do not die, the new leaves drawn out are not easy to elongate. The plants shrink and do not head or pull out short ears. The disease occurs during the booting and heading stage, and severe knot blast and neck blast occur, which can cause a large number of white ears or half white ear, great loss

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