Bactericide specially for preventing and treating diseases of tobacco in middle and later stage and its prepn

Abstract

The special-purpose fungicide for controlling several diseases in middle and later stage of tobacco plant growth is made up by using cupric hydroxide, Saikuzuo, Carboxymethyl cellulose, petroleum sodium carbonate, propanetriol, diatomite, isopropanol and chaku as raw material through a certain preparation process. Its finished product is a 55% wettable powder which can be used for curing wildfine, rust, angular leaf spot, powdery mildew, anthracnose and white rust, etc. Its preparation process is simple, does not produce waste water, waste residue and waste gas, and features low cost, broad spectrum, high efficiency and low-toxicity.

Description

1. Technical field [0001] The invention relates to the technical field of using chemical methods to prevent and control various diseases in the growth process of flue-cured tobacco, in particular to a fungicide for preventing and curing various diseases in the middle and later stages of flue-cured tobacco. 2. Background technology [0002] The annual planting area of ​​flue-cured tobacco in Yunnan Province is 5-6 million mu. It is the pillar industry of Yunnan’s finance. Its industrial profit accounts for about 70% of the province’s fiscal revenue. Morin zinc, mancozeb, fenxining and other pesticides to prevent and control flue-cured tobacco diseases. However, with the improvement of production conditions, changes in the types, proportions, quantities, and methods of fertilization, as well as the cultivation methods and seedling raising methods of flue-cured tobacco varieties, the advancement of transplanting seasons, the types, occurrence periods, and occurrence of pathogen...