Inquiries: I am a farmer in Linyi County. The embarrassment in the field is serious, and the body size of the pupae is large. There are small fingers. How can we prevent this?
Answer: According to the situation reflected by the farmer's friends and the author's understanding of this area, the preliminary judgment of the species of earthworms in the land of the Yellow Sea bream is the larvae of the small clouded beetle. The habit of vertical movement is mainly related to the temperature of the soil. The optimum soil temperature for crop ploughing activities averages 13°C to 18°C. From late October to early November, when the temperature of the soil continues to decline, submerge into a 30- to 50-cm soil layer to do the wintering.
Control methods:
1. Agricultural measures. Combining deep turning and fine turning, rotating rotation, and cultivating and weeding measures can kill a large number of earthworms.
2. Artificial control. Every year in spring plowing and autumn plowing, plows are picked up and poultry feed can be made.
3. Chemical control. Because you live in the earth, you can play in the soil, you can play in the tomb, you can play in the tomb, you can play in the rock, you can chat, you can play in the water, and you can use it to cook shrimp. This is the most economical, simple and effective way to combat warts. Commonly used pharmaceuticals include phoxim and chlorpyrifos, etc. The 0.2% seed weight is used to weigh the pharmaceuticals, and appropriate amount of water is added for dilution. (2) Soil chemical treatment: Before planting the crops, use 15% Duxin granules 300 to 500 grams per mu. Mix the soil and spread it evenly on the surface, and then turn it into the plough layer soil. Or use 500 grams of 50% phoxim EC as mu, dilute with water and mix with 50 kg of fine sandy soil, then spread it on the surface, turn it into the soil and sow. (3) Toxic sand treatment sowing ditch: Use 50% phoxim EC 500g, dilute with proper amount of water, mix with 20 kg of fine sandy soil, apply it to the sowing ditch, and sow again. Or use 10% extinct grams of granules 4 ~ 5 kg, after the ditch spread medicine, covering the soil, sodding after the cover.
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