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It does not take a penny to rule whitefly
The greenhouse whitefly is a pest of Helminoptera leucocephala, which can damage cucumbers, kidney beans, kidney beans, eggplant, cabbage, lettuce, and other vegetables, flowers, and crops. The worm eats plant sap from adults and nymphs, causing the victim leaves to chlorosis, yellow, and wilting. Due to its high reproduction speed and fertility, the worm can breed for about one month in the case of 18-21°C, and it can breed for more than ten generations in the north in one year. Therefore, once the population is huge and clustered, it is also Can secrete a lot of honey dew, serious pollution of fruits and leaves, causing the occurrence of coal pollution, so that vegetables and other products to reduce production and loss of value. Due to overlapping generations of whiteflies, a variety of insect species can coexist on the same crop at the same time. However, pesticides that are currently available on the market have not been found to be effective against all forms of insects. Therefore, most vegetable farmers feel the control of the pests. With headaches, he had to increase the amount of drugs and increase the frequency of drug fights. He constantly changed new pesticides, but he still had little success. Over time, it will inevitably lead to pesticide residues in vegetables and gradually exceed the standard. In order to achieve the dual purpose of high-yield vegetable farmers and the need for public health vegetables, after years of research, the author has found a good way to eliminate whitefly without spending a penny. Last year, he experimented with a vegetable garden that was heavily damaged. A gratifying result. As the greenhouses and open-air vegetable production are closely linked and alternate with each other, the whitefly will fly from the open field into the greenhouse for breeding after the fall, and in the spring, the window will be ventilated through the greenhouse and the seedlings will be transplanted to the open ground and moved to the open ground. Therefore, the whitefly can occur for an anniversary. According to the law that whitefly does not survive in outdoor winter, the author adopted the “close the dog†to allow the whitefly to die in the room with the method of “euthanasiaâ€. After that, the specific measures are as follows. 1. The winter will be used as a killing machine to take advantage of the winter vegetables in the fall, and during the harsh winter season, it will be suitable for killing insects. 2. Lashio Kiyoshi is not in a hurry to protect autumn and winter leeks after the end of harvest is not eager to pull the net 茬 茬 å… å… å… å… å… å… å… å… å… å… å… å… å… å… å… å… å… å… å… å… å… å… èŒ¬ 茬 茬 茬 茬 茬 茬 茬 å… å… å… å… å… å… å… å… é‡‡å–Feeding method. 3, hot and cold alternately euthanized after the closed whitefly is very active, are actively inhabiting the plants to eat. In the evening, the entire shed is not covered. In the evening, after the sheds are closed in other vegetable sheds, the shed seals are opened so that the cold wind is straight in. Whiteflies no longer migrate. With the arrival of the cold in the middle of the night, most whiteflies froze in their sleep. dead. If there is no death the next day, continue to freeze overnight, the mortality rate is 100%. 4, killing means all the bases with the dumping shed by shed, insecticide method sheds so.