Pay attention to check the same type of snail
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The same species of genus Bacillus is a mollusk that occurs every year in Dong'a County. The main field crops of Daejeon are corn and soybeans. Their hazards are that the foraging leaves become transparent lamellar; the second is to feed on the female silk of the corn and affect pollination. The pests began to plague some plots in early August 2003. The county plant protection station recently surveyed the field crops, with an average of 6-10 snails per square meter, both larvae and crustaceans. It is now in egg hatching. During the peak period, it is expected that some plots in our county will be severely generated; the main basis is: 1. The winter base number is large. The survey was conducted on August 20, 2003, with 5-6 heads per plant in some plots and 20-30 heads per plant and 50-60 heads per square meter in soybean fields. 2. In May of this year, precipitation was high and the humidity in the field was large, which was conducive to feeding and spawning. 3, this year with the combine harvester wheat land more, due to the wheat straw sprinkled in the field plus more precipitation in June, field conditions conducive to egg hatching and snail growth feeding. The station should pay attention to the investigation and find that when the number of fields is large, the people are instructed to carry out comprehensive prevention and control. Since the creature has a hard outer shell, it is difficult to prevent and control. To avoid blind medication, the following measures should be taken: 1. Use of leaves, weeds, leaves, etc. Trap is trapped so that the snail is lurking in the trapping pile and concentrated to catch it. The cultivator can use the cultivator to destroy the hidden place and can kill the eggs and young snails; 2. The snail on the plant is performed in the evening or in the morning. Capture, focus on treatment; 3, sprinkle lime in the field to reduce the scope of snail activity; 4, according to their habits, after 6 pm, with 6% per milli-gram of gram curd granules 500 grams evenly spread in the rows and the base of the crop; 5. For the snails on the crop plants, the insecticides with strong stomach toxicity can be used for spraying control after 6 pm.