Bulk Frozen Cauliflower,Iqf Cauliflower,Frozen Cauliflower Elites-United Foodstuff Co., Ltd. , http://www.qdiqfvegetables.com
The control period and method of soybean borer
Soybean borer is the main pest in soybean production. The annual insect feeding rate is between 5% and 10%. In severe years, the insect feeding rate is as high as 30% to 60%. Damaged Beans not only reduce production but also deteriorate quality. To master the control period and methods of soybean borerworm, the insectivorous rate can be controlled within 2% to 3%. Soybean borers occur one generation each year, and the old mature larvae in the soil cover the winter. In the second half of July, it floats to the top of the earth. Eclosion became adult at the end of July and early August, and in mid-August it was the peak of emergence. After adult mating, eggs were laid on the tender quail. The eggs were hatched as larvae after 6 to 7 days. The larvae crawled for several hours on the larvae and became infected. The larval period was 20 to 30 days, and the larvae began to disintegrate into the soil in September. First, the emergence of adult control during the prosperous period to master the full-fledged emergence of adult first to do a good job in forecasting, from the beginning of August every day before the afternoon sun every day to investigate the amount of adult moths, when the number of field moth suddenly increased, the phenomenon of playing a group that is the age of adulthood ( Most years are August 12 to August 1.8). Control methods: First, the dichlorvos medicine stick fumigation. Use 80% dichlorvos emulsifiable concentrate 100 to 150 milliliters per acre, cut the corn cobs or sunflower stalks into about 5 cm lengths, dip the dichlorvos solution, and advance the density of 5 meters per 1 stick by 4 ridges. The stick is sandwiched between soya bean twigs. This method of fumigation is suitable for the soybean field where luxuriant growth and luxuriant growth of soybeans occur. The control effect is up to 90%. The second method is spraying. Use 25% of fast killing emulsifiable concentrate or other pyrethroids, 25-30 ml per acre of water using a backpack sprayer to spray upward from the root of the sprayer upward, so that the lower leaves and the top leaves on the drug. This method of controlling adults, regardless of the growth of soybeans, works well. Second, before the larvae enter the cockroaches to control the larvae of soybean borer, the time for crawling on the columbine generally does not exceed 8 hours. This time is hard to grasp. Therefore, the larvae must be field-tested, so that they can fight drugs when they are seen on eggs. Control larvae generally use pyrethroids for water spray. The spray should be uniform, especially in the scabs. This method can control larvae up to 80%. Third, control of soybeans after soybean harvest generally enters September harvest, at this time there are still some of the fruiting insects are not dislocated, if not promptly threshing, the carnivorous insects in the carcass can continue to be harmed, and gradually dislocated into the soil. Before entering the yard in the soybean harvest period, soy quail bottom soil was moistened with 1500-times liquid of weed-killing emulsifiable concentrate or other insecticides. The wet soil layer was about 3 cm deep, then compacted with wooden rakes, and then the recovered soybeans were tied Above, this can kill later-staged carnivorous insects in the medicinal soil layer of Loudi. The prevention and control methods commonly used after soybean harvest: First, the side of the threshing, so as to prevent the damage of the fruitworm after the harvest. The second is to apply pesticides at the bottom of soybeans before harvesting to reduce the source of insects in the next year. The third is the fall of the bean fields in autumn, destroying the wintering grounds of the fruitworms that have been removed from the soil before harvest and increasing the mortality rate.