Method for preventing spirogyra in rice field through fertilization-prior-to-plowing

Abstract

The invention relates to a method for preventing spirogyra in a rice field through fertilization-prior-to-plowing. The method comprises the steps of seedling cultivation in the rice field, fine soil preparation in the rice field, fertilization-prior-to-plowing, plowing, arrangement of a screen filter tank, irrigation and harrowing after the plowing, weed prevention, rice seedlings transplanting, water layer management, booting fertilization, pest control and harvesting. Particularly, in the step of the fertilization-prior-to-plowing, 85 to 90 percent of nitrogen fertilizer, 100 percent of phosphate fertilizer and 100 percent of potassium fertilizer in all fertilizers which are applied to the rice field are uniformly applied to the surface of soil at one time before the plowing. The fertilizers are spread on the surface layer of the soil in a manual manner or through an agricultural machine, a fertilization leakage part is manually searched, and repeated fertilization and fertilization leakage are avoided. The method is good in prevention effect, chemical pesticides do not need to be re-applied for preventing the spirogyra, and the spirogyra can be effectively avoided. By the adoption of the method, over 95 percent of a spirogyra preventing effect is achieved; through a continuous multi-field test, the pesticides do not need to be re-applied for prevention; and meanwhile, the yield is improved, the effect is enhanced, the method is environment-friendly, the production cost is saved, and the method is a good method for agriculturally preventing the spirogyra.

Description

technical field [0001] The invention relates to a method for preventing Spirogyra in paddy fields, in particular to a method for preventing Spirogyra in paddy fields by fertilizing before plowing. Background technique [0002] The rice area in my country is about 450 million mu. Due to the use of a large amount of chemical fertilizers, the eutrophication of the water body is quite serious. More than 50% of the country’s rice fields have suffered from different degrees of Spirogyra hazards, especially in the northern rice areas of my country. The country uses it every year to prevent and control Spirogyra uses more than 10,000 tons of pesticides, which is not only harmful to rice production, but also has a certain impact on the ecological environment. Spirogyra communis (Hass.) Kutz. is an aquatic algae plant of the genus Spirogyra of the family Spirulina, commonly known as moss, toad quilt, and toad skin. It is one of the malignant weeds in rice fields. It regenerates by bre...

AI Technical Summary

Problems solved by technology

In recent years, 25% triphenyltin acetate, a new type of pesticide, has been widely used in production, which has a relatively ideal control effect on Spirogyra, but it does great damage to human skin, is highly toxic to fish, and has a great impact on the ecological environment.

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