Method for preventing and treating smut of newly-planted sugarcane

Abstract

The invention provides a method for preventing and treating the smut of newly-planted sugarcane. The method includes the steps of firstly, selecting diseased and pest-affected sugarcane stalks, stripping leaves, and cutting each sugarcane stalk into 2-3 bud sugarcane stalk sections; secondly, spraying pesticide-fertilizer liquid to every 1000kg of sugarcane stalk sections to perform seedling coating germination accelerating, wherein the pesticide-fertilizer liquid is prepared by mixing 200-300mL of 2.5% Permis suspended seed coating agent, 200g of potassium dihydrogen phosphate and 15kg of water; thirdly, after planting, covering a whole planting field with a weeding mulch film special for the sugarcane to promote germination, wherein the width of the mulch film is not lower than 3m. The method has the advantages that the method integrates seedling coating sterilizing germination accelerating and weeding film full-covering temperature-increasing water-retaining germination promoting, smut germs can be effectively prevented from invading into sugarcane buds through sugarcane seeds, the incidence and damage of the smut are reduced, the preventing effect reaches 92.4-95.8%, the yield of the sugarcane is increased by more than 25%, simpleness and efficiency are achieved, the utilization rate of water, fertilizer and pesticide are increased greatly, the use amount of the pesticide and the fertilizer is reduced while the effects are increased, germination time is shortened, germ infection time is shortened, and the disease resistance of the sugarcane is enhanced.

Description

technical field [0001] The invention belongs to the technical field of plant protection, in particular to a method for preventing and treating newly planted sugarcane smut. Background technique [0002] Sugarcane smut is a world-wide important fungal disease caused by Ustilago scitaminea Sydow. Seriously popular, thus jeopardizing the sugar industry; now widely distributed in various sugarcane planting areas in my country, seriously affecting sugarcane production, and showing an increasing trend, especially in dry land and rat root cane. The rate of diseased plants in susceptible varieties is as high as 50%, and seriously as high as 80% to 90%, causing huge economic losses. It can be seen that the prevalence of sugarcane smut has become one of the main obstacles that seriously affect the high, stable, and high-quality sugarcane yields in my country at this stage. Therefore, scientific and effective prevention and control of sugarcane smut will be the primary task of improvi...

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