Medicine for controlling underground pests in tobacco fields and preparation method thereof

Abstract

The invention discloses a medicine for controlling underground pests in tobacco fields, which is characterized in that the medicine is an allicin solution or an allicin slow-release capsule with an effective concentration of 1% to 1 / 1000. Allicin has a strong garlic smell, and has bactericidal and insecticidal effects, and has a strong contact effect on slugs. Slugs and small cutworms are pests that are sensitive to odors. Dilute allicin and spray it in well pits. The strong garlic smell can make slugs and small cutworms escape quickly. The depth of well pits is generally about 20 cm. After transplanting, the temperature at the bottom of the well pit is generally about 20 degrees. In a relatively closed environment, allicin degrades slowly at about 20 degrees, and there is still a strong smell after about 15 days. It can be maintained for more than 30 days, which can meet the production needs, and is an environmentally friendly agent with high efficiency, low toxicity and no residue.

Description

technical field [0001] The invention relates to a medicine for controlling underground pests in tobacco fields and a preparation method thereof, in particular to a method for controlling underground pests in tobacco fields with allicin. Background technique [0002] Guizhou is the second largest smoking area in my country, with a relatively large tobacco planting area. During the production season, tobacco will be infested by various diseases and insect pests. After transplanting tobacco to the cluster stage, underground pests are the main damage factors. Among them, wild slugs and Cutworms are the two most serious underground pests in flue-cured tobacco production in Guizhou. [0003] Wild slugs, also known as snails without snails, are commonly known as slugs, sticky worms, dry snails, and soft snails. They are distributed in tropical, subtropical, and temperate regions. Wild slugs like dark, humid, and humus-rich environments. The optimum temperature for their activities i...

AI Technical Summary

Problems solved by technology

At present, the most common transplanting method of tobacco in Guizhou is cellar transplanting, which can provide suitable temperature and humidity for seedlings, and promote early growth and rapid growth of tobacco; but at the same time, it also provides the most favorable temperature for the growth of underground pests. Humidity and light conditions often lead to the occurrence of wild slugs and cutworms after transplanting, seriously endangering the growth of tobacco, and have become one of the main factors that harm the growth of tobacco leaves in Guizhou

[0006] At present, the commonly used drugs for preventing and controlling slugs in production are paraacetaldehyde drugs, and the drugs for preventing and controlling cutworms are mainly insecticides such as dimethoxazole. Although the effect is remarkable, it often requires multiple applications, and the drugs can only It will only work after contact with pests. In the year when the pests are more harmful, the insecticidal effect has certain limitations, and there is a problem of pesticide residue after repeated use