Snails are molluscs, gastropods. The snail not only harms the young shoots and leaves of the plants, but also causes the lack of seedlings and cuts, which is one of the important pests in agriculture. First, the symptoms When the back of corn snails occurs, there are cracks in the damaged corn leaves, leaving only a transparent layer of the epidermis at the cracks. When it is severe, it causes corn seedlings and leaves to distort, which in turn affects photosynthesis. The average rate of damaged trees in the field is 10- In 15%, the number of affected plots in serious fields is more than 50%, which will threaten the normal growth of corn. Second, control methods (a) Agricultural control Often clean the garden, destroy the habitat of snails and spawning sites, reduce the source of insects. Fall and winter deep in the ground, the eggs and wintering adults can be turned to the surface, so that it was sunburned or eaten by natural enemies. In places where snails are more severe, a small piece of weeds is left during the winter and spring and autumn plowing, attracting snails and then eliminating them. (b) Physical control Timely sprinkle a layer of quicklime around the plants, but do not sprinkle on the front of the leaves of the crop to avoid affecting photosynthesis. When the snail comes out to feed during the evening, it will lose water and die if it comes into contact with the quick lime. Or sprinkle the lime in the trenches and ridges of the farmland to form a blockade zone, and use 5-7 kg of lime per acre. The effect is poor when the ground is wet. (c) Manual capture In the early morning sunrise or rainy days, when snails are in danger, they are manually caught on the ground and on plants. (IV) Chemical control In snails, 600 grams of 10% snail enemies (polyacetaldehyde) granules are used per acre. Eveningly, they are spread on the surface of the pods or applied to the plants on the ground. They can also be used per acre. 80% Tetraacetaldehyde 30-60 grams, watered spray. Severe occurrence of snails on snails, every 10-15 days, for the second time, can effectively control the damage of snails. For the specific usage and dosage of pesticides, please refer to the instructions. 50pcs Kn95 Face Mask,Adult Non-Woven Fabrics Cover,Adult Non-Woven Face Mask,3D Dimensional Kn95 Face Mask Dongguan Keyutai Mask Co., Ltd. , https://www.maskkytai.com