1. Clear Garden. Jujube rust, green-lipped iridescent grasshoppers, and date moths and other pests are overwintering in litter or weeds under trees. Therefore, jujube trees should be timely cleaned after deciduous defoliation, the litter, rotten fruit and weeds in the garden should be cleaned up, and burned or buried deep underground.
2, dig worms, insects. Based on the wintering habits of peach borer and jujube stepping in the soil around the trunk, combining the soil deep turning, picking up the overwintering insects and insects before the soil is frozen and thawing, and centralizing extinction can effectively reduce the number of insect populations in the coming year.
3, old skin scraping. The temperature under the bark is 1~3 degrees higher than the temperature, and the barks and tree gaps are wintering sites for pests and diseases such as Ziziphus jujube and Red spider. By scraping the old skin, you can not only eliminate pests but also stimulate tree growth. The scrapings are carried out before the budding and before the sprouting. When scraping the skin, a plastic sheet is laid under the tree to collect the bark and insects, and then burned or buried deeply.
4, white. The trunk is painted white, which can prevent cold and prevent disease and pest control. Formulation of whitening agent: 12 parts of quicklime (open with cold water), 2 parts of sulfur or 3 parts of lime sulfur stock solution, 2 parts of salt (opened with hot water), 36 parts of water, and proper amount of glue. Lime and sulfur can prevent freezing, prevent sunburn, and prevent disease and kill insects. Salt helps lime penetrate into the bark to keep moisture and prevent lime cracking and peeling. Adding glue can enhance the adhesion of whitening agent. The white part of the painting should be high. Wherever the branches of old skin are scraped, they should be painted white to prevent dry tips. In recent years, many farmers have used spraying and tree-protecting generals instead of whitening to achieve good results.
5, blocking tree hole. The old tree-tree hole is easy to breed pests, and it is also an overwintering place for pests such as juvenile armyworm. In winter, 10 parts of clay can be used, 3 parts of broken wheat straw can be added with a little insecticide, and tree holes can be blocked with water and slurry to seal and kill. Overwhelming insects.
6, cutworm branches, insects. In combination with winter pruning, the pests damaged by the waxy wax bee can be cut off. For severely damaged big branches, the overwintering body on the wire can be removed with a wire brush, and the overwintering mites on the yellow thorn moth must be cut off.
7, spraying agent. Because there is a layer of wax shell on the surface of turtle wax, it is very difficult for general Chemical Pesticides to kill it. It can be sprayed with diesel emulsion to eliminate it. Before the jujube sprouts, the whole tree sprays Bami 5 degree lime sulfur evenly and carefully, which can control the red spider, pear orchard and other pests.
8. Sterilization. After the pests and diseases in the whole park are killed, general tree maintenance will be used to disinfect the whole park. At the same time, all kinds of cortical diseases will be prevented from multiplying, so as to protect the flower buds from winterization. (China Plant Protection Network Weilin Fei)
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