The high-temperature and rainy summer is the peak period of migratory pests such as migratory locusts, aphids, and leaf miners, and rain and these migratory pests are the spreaders of viral diseases. This gives cultivation and management of summer vegetables. It has come to great difficulty. Under normal circumstances, the probability of vegetables infected with virus disease in Yuexian County is 60%-100%. Examples of vegetable outbreaks caused by viruses are not unusual. Therefore, avoiding the successful cultivation of viral diseases, the market supply period just in time to catch up with the off-season, the economic benefits are considerable. If the dome-shaped plastic greenhouse does not remove the old film from the previous year, the sagging film around the shed will be taken up for ventilation; the white film covering the film on the shed will be sprayed with white paint, or fresh grass and leaves will be shaded. It can prevent rain and heat. With a reinvestment of 150 yuan and the use of gauze on all sides, whiteflies, locusts, leaf miners, and thrips can be prevented from entering, cutting off their means of transmitting viral diseases. In this way, vegetables that are cultivated in summer can be used to spray 1-2 times of pesticides to escape the infection of virus diseases, and they are easy to cultivate and achieve higher economic benefits. The practice of vegetable farmers in Gaomi Town, Gaomi City, Shandong Province shows that in a round-shaped greenhouse with an area of ​​1 mu, tomatoes can be cultivated in this way and they can earn 10,000-1.4 million in one season.
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