When the jujube sprouts in mid-to-late April, it is often found that the newly emerged buds are eaten by the worms. The pest is a zaofu, and the bath is called "item door to eat." When the larva crawls, the body has a "bow" shape and the worms move forward. When the jujube tree leaves blossom, the larvae grow older and the food intake increases. The leaves often eat large and small noodles. When the jujube blooms, the leaves and buds of the whole tree can be eaten. Affect the fruit set in the coming year. Therefore, fruit growers should pay attention to their prevention and control. Before digging in mid-March, within 15 feet of the diameter of the trunk, dig a 15 cm layer of soil to look for the winter sedge and pick it up outside the garden to destroy it. This work can be performed in conjunction with turning the tree tray. The adult female (moth moth) of the moth catching moth stepping does not fly without wings, and it needs to climb the tree after emergence to find the male moths for copulation. According to this characteristic, a plastic film may be wrapped around the base of the trunk 30 to 50 cm from the ground before the emergence of the adult in late March. The width of the film is 8 to 9 cm, the joint is overlapped by 3 cm, and two dates are used for stabbing. Well fixed, the film should be close to the trunk without leaving any gaps. This prevents the female moth from climbing up the tree to lay eggs and catching moths every morning. After the egg-wrecking trunk is wrapped around the plastic film, the female moth is not allowed to put on the tree and concentrates on the cracks in the rough skin under the plastic film. The skin can be scraped off by scraping off the rough skin, or the female moth can be trapped under the plastic film by two turns of the grass rope. Spawning, and change the grass rope every half a month, concentrated burned to destroy the eggs. Generally can be changed 3 times grass rope. The newly hatched larvae of the knocking tree pest zaobufu have a pseudo dead nature. After being frightened, the silkworms droop down, so knocking the tree can cause the larvae to fall off and be eliminated in time. Chemical control When the jujube shoots are 3 cm long, they are sprayed for the first time, and 500 to 1,000 times Bt emulsion or 25% diflubenzuron 1500 times or 1200 times faster can be selected to control the newly hatched larvae. The jujube shoots are sprayed for the second time when they are 5-7 cm in length, and they can be used with 1200-fold solution plus cypermethrin 1000-fold solution or 75% phoxim 800-l000-fold solution plus 1000-times cypermethrin 1000-time solution or 20% rapid elimination. Kill 6,000 times liquid to control all age larvae. Manually catching the larvae on the mature larvae left after the spraying, using their midday quiescence on the branches, for manual capture.
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