Drosophila is the main pest of red bayberry, and female oviposititis lays eggs on the mature red bayberry fruit milk column, and the hatched larvae feed on the food. Damaged fruits are uneven, fruit juice spills and fruit drops, yields decline, quality deteriorates, and affects sales, storage, processing, and commodity prices.
First, the law of the occurrence of fruit flies. The fruit fly of Drosophila melanogaster is at a temperature of 21-25°C and a humidity of 75-85%, for a generation of 4-7 days. Overlapping generations in the field, it is not easy to divide algebra, each coexist at the same time, in the temperature above 10 °C, visible Drosophila adult activity. Prior to the coloring of the hard seeds of the bayberry fruit, the fruit cannot become the food of the fruit fly, the food source conditions are poor, and the fruit flies occur less, and do not cause harm. After Yangmei entered mature stage, the fruit became soft and the fruit flies had proper foods. The damage occurred during the peak period. With the harvest, the bayberry gradually decreased and the number of fruit flies decreased. After the red bayberry was harvested, the fruit of the tree and the fallen fruit of the tree were rotted. There was a lot of food and there was a period of prosperous growth. With the gradual disappearance of the fruit and fruits, the population of worms decreased with the lack of food. . The fruit fly of Drosophila melanogaster occurs in the excellent period of two food conditions in late June and late July. The economic damage caused by the occurrence of damage in the middle and late June.
Second, the fruit fly control methods: (1) in the middle and late May in the Yangmeiyuan weeding, while using 50% phoxim EC 1000 times liquid spray treatment on the ground, driving down the number of insect sources, can reduce the amount of occurrence; (2) will be before Yangmei mature physiology Fall fruit and fruit harvested during the ripe harvesting period are picked out, covered with thick soil at a certain distance outside the park or sprayed with 30% trichlorfon emulsifiable concentrate 500 times, which can avoid the hazard of returning to the park after its survival and reproduction; (3) The hard seed coloring of bayberry fruit goes into the mature stage, with 1.82% royalfacyanide heavy smoke agent pressing 1:1 water, spraying the cigarette with the puffing machine down to the ground, and killing the adult insects, which has a good effect; (4) The use of fruit Adult larvae of drosophila are chemotaxis, used as a bait with 1:10:10:10:20 of trichlorfon, sugar, vinegar, wine, and fresh water, and placed in Yangmei Garden with a plastic armored liquid, 6-8 pounds/acre. Adults. Regular removal of trapped insects and replacement of bait once a week can result in better trapping effect.

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