The corn borer is a world-wide pest. It seriously harms corn in areas where it occurs in Xinjiang. Especially in the process of hybrid seed production in corn, if it fails to prevent the damage of corn borer in a timely and effective manner, it will cause the pest larvae rate to reach more than 90%. The stalk tying rate was 30% to 50%, and the ear damage rate was 79%. This not only resulted in serious reduction of production, but also the seed germination rate, cleanliness, and fullness were not up to standard. At the same time, the appearance of the seeds was extremely poor. There are many comprehensive prevention and control techniques for corn borers, but the following points are convenient for production: First, prevention and control strategies to carry out pest forecasting, emphasis on plant quarantine, advancement of corn harvest, breeding of resistant varieties and development of sexually induced control Focus on catching granules in the trumpet period to treat lice, and deal with overwintering hosts in response to local conditions. II. Comprehensive prevention and control measures 1. The main measures for wintering control are: after harvesting, and before phlegm-planting in the following year, stalks, roots, cobs, and stalks of the main host should be burned, tanned, sealed, or crushed and aminated. Pre-treatment to reduce the overwintering base and reduce the source of insects. 2. Beauveria bassiana seals the larvae in the larvae for 10 to 15 days. The Beauveria bassiana is sprayed on the host stalks in layers. 100 to 150 grams of bacteria powder per cubic meter can be used for good control. . 3. Machine harvesting Harvesting with a corn harvester can completely kill wintering larvae in stems and cobs. Third, chemical control is currently used mainly in the prevention and treatment of corn leaf stage, in the prevention and control of the first generation of spring corn leaf stage, all in the end of the heart leaf granules in the bell mouth effect is good, and easy to operate. The most commonly used granules for production are 3% carbofuran granules. Corn seed production is higher than Daejeon corn by 40% to 50% for 667 m2 seedlings. At the same time, because of inbreeding resistance in seed production is not as good as that of hybrids, it is in control. The time and amount of pharmaceuticals are different from Daejeon corn, mainly in the end of the heart leaf must be controlled once. In the middle of the heart should be increased prevention 1, 667 square meters with carbofuran granules 3 kg, can be used every 667 square meters plus After 9 kg of fine sand is diluted and sprinkled into the heart, good and effective control effects can be achieved. IV. Biological Control 1. Use of Trichogramma to control Asian corn borer to be used in the 2nd and 3rd generations. From the beginning of the egg's initial stage, the bees are released once every 3 to 5 days, altogether 3 to 4 times, and 667 square meters of bees 1 ~ 30,000 heads, the amount of eggs released at the height of the egg should be larger. 2. Using Bt emulsion (content 12010E8 viable spores/ml), 150 ml per 667 square meters, spraying 50 kg of water, with a certain effect in the first generation of egg hatching.
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