Greenhouse vegetable production Whitefly can be propagated for more than 10 generations a year in the northern solar greenhouse. Adults and larvae take up the plant's liquid to make the leaves green and yellow, wilting and even dead. When the larva is harmful, it secretes a large amount of honeydew, which pollutes the leaves and fruits of the plants, causing mold parasitism, affecting the quality of the vegetables and food hygiene, and losing the value of the goods. Greenhouse whitefly cannot be safely wintered in the wild, but it can continue to be harmful in greenhouses. In the second year of spring, it was transferred to the open field vegetable field and spread. In the open field vegetable garden, the growth rate was slow from April to May, and the growth rate was the fastest in July and August. The conditions of parasitic plants in the greenhouse can cause perennial damage. White powder is more harmful to cucumbers, tomatoes, and kidney beans, and it can also damage green pepper, eggplant, potato and other solanaceae vegetables and some flowers. The following methods can be used to control whitefly: 1. Agricultural control Whitefly does not like celery, garlic, onion and other low-temperature vegetable crops. The first crop can be used to grow celery, garlic and other crops to reduce the area of ​​cucumber and tomato. Thoroughly smoke the residual insect source before seedling, clean the weeds and seal the nylon gauze at the vent to control the foreign insect source. Try to avoid mixing cucumber, kidney beans and tomatoes. Planting cruciferous vegetables that do not like to be harmful in the vicinity of the greenhouse, reducing the source of insects. It can also manually release the larvae for biological control. 2, chemical control due to white powder mites occur in a generation more generations, in the same period of the same crop can exist in a variety of insect state, the current killing effect on all insects almost no pesticides, so the chemical control must be used several times. The following pesticides can be used; 10% chlorpyrifos 1000 times solution; 25% male emulsifiable concentrate 2000 times solution; 2.5% Uranus emulsifiable concentrate 3000 times solution. The control effect of the dichlorvos fumigation method on whitefly was also good. 3, physical control of whitefly 有 has a strong tendency to yellow, especially orange and yellow is the strongest, can be set in the greenhouse or vegetable garden yellow board to kill adults. The method is to use waste fiberboard or cardboard, first apply a layer of orange-yellow paint, and then apply a layer of viscous oil (available with No. 10 motor oil), and set more than 30 pieces per 667 square meters (mu). The same height as the plant. When the whitefly is sticky, it can be coated with viscous oil. At the same time, it should be noted that to prevent and control the whitefly, it is necessary to adopt a unified joint prevention and treatment according to the scope of occurrence to improve the overall control effect. Vasodilator Protection Ingredients We are a professional Chinese manufacturer of Vasodilator Protection Ingredients;we supply various products of Decrease Blood Sugar Ingredients, Soften Blood Vessel Ingredients; and we can providing product images and basic parameters with each Depressing blood-fat Ingredients, such as D-pinitol 98%, Lumbrukinase powder, Look forward to your cooperation! Decrease Blood Sugar Ingredients,Soften Blood Vessel Ingredients,Depressing blood-fat Ingredients,D-pinitol 98%,Lumbrukinase powder Xi'an Quanao Biotech Co., Ltd. , https://www.quanaobio.com