One, armyworm 1, trapping and killing adult worms: When the number of moths begins to rise, use sweet and sour liquor or other fermented foods with sweet and sour tastes as a trapping agent, and put them in pots, bowls, bowls and other containers, and put a pot every 5-10 mus. The pot should be about 1 foot higher than the crop, and the trap should be about 1 inch deep. Take out the moth every morning, cover the pots during the day, and open the lid in the evening. 5-7 days of inducing agent once for 16-20 consecutive days. In addition, Yangzhi can also be used to trap adult insects. 2, moth picking eggs: from the beginning of spawning until the end of the end of the period, in the field to insert small grass, 10 per acre, egg collection interval, the first generation of about 5 days, the second to third generation to 3 days Right and left are appropriate, it is best to remove the egg blocks from the field and eliminate all the new eggs. 3, chemical pesticides control: available 2.5% trichlorfon powder, 2-2.5 kg per mu; or 90% trichlorfon 1000-2000 times, 50% 1605, 80% dichlorvos 2000-3000 times spray, The effect is very good. Second, corn mash 1. Agricultural Technology Prevention and Control (1) To deal with overwintering hosts and reduce the number of populations of insect populations. In Northern China, the use of methods such as burning, smashing, rolling, sealing, stripping, and shoveling is often used to reduce the number of overwintering larvae to a small degree. (2) Anti-germinated rice varieties such as Shendan 1 corn were highly resistant to the first generation corn borer, and Danyu 13 corn was moderately resistant to the first generation corn borer. 2, biological control. Use Trichogramma to control corn borer. The Trichogramma was released during the oviposition period of the corn pupa. In the middle and late June, the bees were released when the number of eggs dropped to one-half to one-hundred and one was released every 5-7 days. 30,000 heads can be set up with 4-5 bees. It can also be controlled by Beauveria bassiana. Take 1 part per gram of spore powder containing 5-10 billion spores, and stop applying 10-20 pieces of fine sand to middle leaves of corn. The bacteria powder was used to seal the alfalfa, and 100 grams of bacteria powder per cubic meter of straw was sprayed on the alfalfa with a sprayer before the maize cane was revived in May. 3, drug Liu prevention. Generally use 50% ethyl 1605 EC and 20% parathion microcapsule 500g, add 10 kg of water and mix 50 kg of slag. Use 4 kg per mu. Put into the bell mouth in late June to early July of corn leaf. can. Three, corn spot 1. Select disease-resistant varieties such as Danyu 6, etc., and pay attention to the rational mix and rotation of varieties to avoid the simplification of varieties. 2. To improve cultivation management techniques, we must implement large-scale crop rotation and disease treatment, timely sowing, and additional basal fertilizer. The reform of planting methods can be intercrossed with dwarfing crops. 3, pharmaceutical control Can use 50% carbendazim WP 500 times, spray time should be controlled before the expansion phase of the disease, spray once every 10 days after a total spray 2-3 times. The dosage should be 75-100 kg per mu. Four, corn leaf spot 1. Use resistant varieties. 2, strengthen the cultivation and management to remove stubble, large-scale removal of corn at the bottom of diseased leaves. 3, the drug control 75% chlorothalonil 500 times spraying. Five, corn smut 1. Select disease resistant varieties. 2. Reducing the initial infection source to avoid continuous cropping, removing diseased seedlings and diseased plants, and applying rotten farmyard fertilizers to strengthen seedling management. 3, the seed dressing seed weight of 2-3% of the triazole or 25% triadimefon powder, and the adhesive dilute corn paste mix, and then dressing, dry immediately after sowing. pressure cock valve Multi-Pass Cock Valve,Cock Valve,Pressure Cock Valve Zhejiang Haisheng Medical Device Co., Ltd , https://www.hisernmedical.com