Method for chemically preventing and removing water hyacinths and pistia stratiotes

Abstract

The invention discloses a method for chemically preventing and removing water hyacinths and pistia stratiotes.The method is completed through the first step of pretreatment, the second step of pesticide application and the third step of a check test.The method has the advantages that mesotrione can effectively prevent and treat field broad-leaved weeds and can also prevent and treat two vicious aquatic weeds, namely, the water hyacinths and the pistia stratiotes fast and effectively; a body and metabolin of the pesticide both belong to low-toxicity substances, degradation in water is fast, the activity of aquatic organisms and drinking water safety are not affected, and the aims of safe and efficient prevention and treatment with time and labor saved are achieved.

Description

technical field [0001] The invention belongs to the technical field of preventing and controlling aquatic weeds of the family Araceae and Araceae, in particular to a method for chemically preventing and controlling water hyacinth and weed. Background technique [0002] Hyacinth hyacinth, also known as water hyacinth and water hyacinth, is a perennial herb plant that floats in water or grows in mud. Its reproduction speed is fast, and the number of plants can be doubled within 5 days, and a group of 600,000 plants can be multiplied in 8 months. , 1 inflorescence can produce 300 seeds, and the seeds can survive underwater for 5 to 20 years. This grass has been flooded in 17 provinces, municipalities and autonomous regions in southern my country. It is currently one of the most harmful perennial aquatic weeds in the world. . [0003] Dale, also known as Daping, Dayelian, Furonglian, water floating lotus, fat pig dish, water cabbage, is a perennial herbaceous plant. Its reproduct...

AI Technical Summary

Problems solved by technology

In the fourth issue of the Journal of Weed Science in 2008, "Screening of herbicides for controlling water hyacinth", Cai Yingjie et al. screened the herbicides for controlling water hyacinth and found that Kewuzong (bipyridinium salts) was quick-acting and died 8 days after spraying 2,4-D sodium salt , Grass leather (40% Hu. Zhongling WP) and 2M4Cl also showed good control effects, and the effect of controlling water hyacinth was between Kewuzong and Feida; butachlor and Bicao The control effect of amine was not obvious, the leaf withering rate was only 9.3% and 27.3% 16 days after the application, and the plant death rate was 0.3% and 11.7% respectively

[0008] There are very few studies on herbicides for controlling weeds. At present, it is only reported in J.Aquat.PlantManage 2004 No. 42 "Carfentrazone-ethyl Pond Dissipation and Efficacy on Floating Plants" that carfentrazone can effectively prevent and control weeds, and it degrades rapidly in water, causing water pollution. Low toxicity to aquatic organisms

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