Diflubenzuron composite formula for controlling redried strip cigarette beetles and controlling method for same

Abstract

The invention discloses a diflubenzuron composite formula for controlling redried strip cigarette beetles and a controlling method for the same. The formula comprises, in terms of total mass percent (100%), 10 to 20% of diflubenzuron, 1 to 10% of fenoxycarb, 0.5 to 2.5% of Tween 20, 0.1 to 0.8% of sorbic acid, 2 to 5% of glycerol, 0.5 to 2.5% of white carbon black, 0.05 to 0.3% of xanthan gum and 0.2 to 0.6% of methyl silicone oil, with the balance being water. The method is as follows: during the process of redrying, after threshing and drying of tobacco leaves are finished, the diflubenzuron composite formula for controlling redried strip cigarette beetles is diluted with water and then sprinkled onto the tobacco leaves before packaging of the tobacco leaves, wherein sprinkling amount of the diflubenzuron composite formula accounts for 0.3 to 0.5% of the total weight of the tobacco leaves, which enables the concentration of the active component diflubenzuron in the tobacco leaves to be 5 to 30 ppm. According to the invention, 70816 loads of redried strip tobacco leaves are treated with the diflubenzuron composite formula for controlling redried strip cigarette beetles by using the controlling method; all the treated tobacco leaves do not suffer from insect attack by cigarette beetles and the like during storage, the phenomenon of moth damage during storage of the treated tobacco leaves can be completely eradicated, and sensory quality of the treated tobacco leaves remains unchanged.

Description

Technical field: [0001] The invention relates to a pesticide for killing tobacco A and a method for preventing and controlling tobacco A, in particular to a compound formula of diflubenzuron for preventing and curing red-cured tobacco A and the prevention and control method thereof. Background technique: [0002] my country is a big tobacco-producing country and a big tobacco-consuming country. Tobacco leaf storage pests cause huge losses to tobacco companies every year. After the tobacco leaves are eaten by binworms, the unit weight is reduced, the broken loss rate is increased, the quality is reduced, the leaves are fragmented, and the silk yield is low. According to Gong Xinwen et al.'s (1990) investigation and research on the loss of stored tobacco pests, it is believed that the loss rate is 1% to 5%. According to Song Jizhen's (1995) survey, the loss rate of tobacco leaves due to the harm of tobacco storage pests is about 1.64%. The total loss of tobacco storage in my ...

AI Technical Summary

Problems solved by technology

Aluminum phosphide tablets are stable when dry. After application, they react with moisture in the air to produce phosphine poisonous gas, which penetrates into tobacco leaves to kill storage pests. However, there are four obvious disadvantages in phosphine insecticide Disadvantages: First, the current tobacco leaves have been processed into a box of about 200kg of laminar tobacco before alcoholization, and the boxes are independent and sealed from each other. It is difficult for phosphine gas to fully contact the tobacco leaves through natural diffusion, so there is insecticide The second is that phosphine is a highly toxic substance. After contacting with tobacco leaves, the phosphine remaining in tobacco leaves will cause a certain degree of damage to the body of smokers.

In addition, the long-term use of phosphine in large quantities also seriously pollutes the warehouse and the surrounding environment, which is likely to cause poisoning of on-site operators; third, phosphine is a flammable, explosive and highly dangerous product that is easy to cause fires. Fire accidents caused by phosphine are in Occurs in cigarette factories from time to time; Fourth, phosphine poisonous gas can cause corrosion to various electrical appliances and equipment, and also increase indirect losses of cigarette factories during fumigation and insecticide