Slugs, also known as water slugs or slime worms, are harmful animals with complex feeding habits and large food intake, belonging to mollusks, Gastropoda and Ophiopogonidae. 65438+ mushroom buds or young mushrooms are damaged by eating, so they can't develop into normal fruiting bodies, which reduces the commercial value of fruiting bodies and can't be processed and canned. 2. Morphological characteristics Yellow slug is naked, soft, with no protective shell, dark orange or yellowish brown, with sporadic yellowish or white spots. When the trunk is stretched, the body length can reach 120 mm and the width 12 mm. Wild slugs are smaller than yellow slugs, soft and shell-less, yellow-white, dark gray or gray-red, and a few have obvious dark stripes or spots. Two pairs of black tentacles. When stretched forward, the body length can reach 30-40 mm and the width is 4-6 mm. Life personality No matter what kind of slug, it has the habit of preferring wet to dry, preferring darkness and avoiding sunshine. The eating habits are complicated, and the mushroom buds and fruiting bodies of various edible fungi can be eaten. 4. Prevention and control methods ① Do a good job in the environmental sanitation inside and outside the mushroom house (field) and remove the hiding place of slugs during the day. Especially for outdoor mushroom beds, it is best to spray 0.3%-0.5% sodium pentachlorophenol 1 times or pour tea seed cake spores 1.20 times or ammonia water 1.50 times on the soil before spreading, which can effectively kill or drive away slugs. In addition, high-concentration salt solution or 5% alkaline water can also be sprayed. ② Poison bait is often used as inducer. Its boiling point is 2 1℃, which is volatile and flammable. It must be kept in the refrigerator to prevent it from getting close to the fire. The formula is: 300g of polyacetal, 50g of sugarcane and 300g of 5% calcium arsenate. After fully stirring, add 400 grams of fried rice bran or bean cake powder and stir evenly. Directly spread around the mushroom farm, or adjust water to make granular poison bait, and put 5- 10 particles per square meter to trap and kill. It works best on sunny days, but it fails when it rains.