New Techniques for Controlling Diseases and Insect Pests of Summer Maize Seeding Period

First, seed treatment

Seed treatment before sowing of corn can increase the germination rate of seeds, promote the growth of seedlings, and can also kill germs on the seed coat, reduce the damage of pests and diseases, and promote the seedlings in full, seedling stage, and seedling strong. Seed processing methods are:

1, drying seeds: The selected seeds are laid on the ground or on the seat, 5-6 cm thick, continuous sun drying 2-3 days, should not be spread directly on the seed in the cement or metal plate, so as not to overheated scald seeds .

2. Seed Dressing: The prevention and treatment of corn virus disease can be used to increase the number of diseases by 1.5% of the diseased disease II, and 100 kg of corn seed can be mixed with the appropriate amount of water and water. Control of root rot and smut can be used 50% carbendazim or 25% triadimefamide 100-150 grams, dressing 50 kg; 50% phoxim EC can be used to control underground pests, watered amount, mixed with corn 100 kilograms, mix and dry after drying. For mixed occurrence of underground pests and corn diseases, mixed pesticides can be used for seed dressing. When dressing seeds, insecticides should be mixed, dried and mixed with fungicides.

3, special coating agent coating. The dosage is 50 ml, which contains 5-7 kilograms of seed, which is both disease prevention and pest control.

Second, seedling control measures

1. Corn Weed Control: Controlling weeds can reduce pest breeding sites. Select high-quality herbicides on the road, master the best drug use period, increase the watering volume when spraying, and avoid high temperature and windy weather, evenly spray to the ground, so as not to re-spray or spray. Use strictly according to herbicide instructions to prevent damage. Commonly used herbicides include 1 mu of 40% EtOH mixture 150-200 liters, 50-80 kg of water, spraying before the sowing of corn. 2 80-100 milliliters of 18% of Jade Farm Music per acre, watered 50-80 kilograms, and sprayed at the 2-3 leaf stage of maize. 3 acres with 50% Dua mixture 150 liters of water 50-80 kilograms, before the four-leaf stage of corn spray.

2. Control of pests and diseases at the seedling stage: 1Laodelphax striatellus and aphids are transmitted insects of corn, sprayed with 1000 times of 10% imidacloprid. 2 control of corn virus disease: In the one-leaf period of corn, mu with 1.5% of diseased disease II No. 800-1000 times the liquid, spray once every 7-10 days, 2 consecutive times, evenly sprayed on both sides of the blade. 3 Note that the occurrence of armyworm, to prevent Mai Zi Ya insect bite. As the armyworm is a migratory pest, it should pay close attention to its occurrence dynamics. Before the third instar of the armyworm larvae, there is a small transparent spot in the heart and leaves of the corn. It can use 25% diurea gum suspension or NPV virus preparation per acre 30-50 grams per acre, watered 40-50 kg spray, while also managing caterpillars, cotton bollworm and other pests. Spray time should be based on the habit of sticky night out, choose before 10 o'clock in the afternoon, after 4 o'clock in the afternoon.

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