The ground tiger, also known as the silkworm, silkworm, and rootworm, is the main omnivorous ground pest. In the middle and late May of each year, its larvae began to unearth the seedlings of agricultural products such as cotton, melon, and spring soybeans, resulting in the loss of seedlings and the reduction of ridges, and the severe destructive rate of the field could be as high as 50% or more. All tigers were unearthed at night. At present, there are no new effective measures for the prevention and control of this pest. In the actual prevention and control, the traditional method is still used for baiting. These traditional methods are not only time-consuming and labor-intensive, but they are also unsatisfactory. In recent years, in actual work, the author made some compensation for the control of the ground tiger. Occasionally, the enemy killed and controlled the ground tiger has a miraculous effect. If properly used, the seedling conservation rate can reach 100%. The application of enemy-killed ground tigers not only solves the above-mentioned deficiencies of the control law, but also has low costs and good results. The specific method is to use an emulsion of 2.0% to kill 40 to 30 milliliters of emulsifiable oil per acre and add 75 kg of water to the seedlings of the crops after sunset to make regular spraying so that the stems and leaves must be wetted. As long as the tigers come out to feed on food, they can kill them. If there is a full-scale spraying of the entire land, the effect is better. Precautions: Use this method to prevent the ground tiger from applying pesticides before sunset. This is because the liquid on the plants is evaporated and the control effect is greatly reduced. When the pesticide is applied after sunset, due to factors such as heavy fog or humidity in the field, the liquid does not evaporate and the pests unearth and feed at night, and they are encountering unopened drugs. Therefore, its insecticidal effect is good, which is the key to the success or failure of the ground tiger. This method not only has special effects on young larvae, but also has magical effects on older larvae with certain resistance. Normally the afternoon of the same day, there will be a large number of dead insects in the early morning of the next day, and over 80% of the pests in the fields will be killed overnight. If it cannot be eradicated, it can be sprayed again in the afternoon to completely remove the remaining pests. Since most of the pests can be killed overnight, time is saved for seedling protection. This is the magic effect of enemy killing that can achieve 100% seedling maintenance. We do not prevent a try!
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