There are several fruit orchards in Kejiazhuang, Bishan County, Shaanxi Province. In the investigation of the garden, there was a hard spot in all the fruit droppings, and a spongy formation was formed below the hard spot and rotted badly. The main reason for the drop was believed to be cricket damage, followed by placket wax. In response to this, the following describes the method of prevention and control of cockroaches.
In the kiwifruit, it is called the pear pod, also known as the flower scorpion, which is what we call the scorpion worm, belonging to the order Hemipteridae and Polygonidae.
First, the occurrence of harm symptoms in the production area of ​​kiwifruit occurs only once a year. It not only harms kiwi fruit, but also harms apples, pears, peaches, apricots, plums, and cherries. The flowers, buds, leaves, branches and fruits of adult fruit trees and nymphs are sucked to dry. The trees also die and the fruit falls off. This phenomenon occurs in the production areas of the kiwifruit peaches, and coal pollution occurs in the process of damage. The coal and patchy pollution occurs on the leaves and the leaves are unable to perform photosynthesis and dry up. The coal-like spots on the surface of the fruit are plentiful and it is difficult to see them. As a whole, because of the weakness of the trees after the victimization, the whole tree can die when it is most severe.
Second, the prevention and control methods 1, thoroughly clean the garden, from the source of control. 2, improve the cultivation practices, reasonable fertilization, high light efficiency pruning, so that the park ventilation, promote its robust growth, improve tree resistance. 3, scraping bark, especially the old skin, cracking, insects hidden in the inside, burned after the scraping to eliminate larvae. 4, artificial killing, in the main vines on the Sokcho so that the eggs produced in the grass, you can eliminate egg mass. When concentrated, it can be killed manually. 5. Control with pollution-free pesticides: Use pollution-free pesticides that meet the requirements for pollution-free and green food production.
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