First, the use of agricultural measures to prevent pests and diseases: First to enhance the tree vigor and improve the fruit tree's own resistance to pests and diseases measures, such as reasonable load, autumn base fertilizer, mixed organic fertilizer and phosphorus and potassium fertilizer; timely irrigation water drain; reasonable pruning, improve ventilation Translucent and so on. The second is to reduce the source of diseases and insects, clear the garden in dormant period, clear the stems and branches of the pests and diseases on the trees, stagnation of the pests and fruits, and the rough bark and diseased skin, and remove the litter and weeds on the ground, etc., and burn them together; during the flowering period In the past, it was appropriate to concentrate on medications to eradicate pests in the early stages to reduce the use of drugs in the middle and later stages. In the early spring, mulching is carried out to prevent pathogens and insects from spreading on the trees. The trees are covered with grass, and the pests are collected in weeds to eliminate them in order to reduce the use of herbs on the trees. Pests are eaten in the vicinity of the orchards. For example, planting sunflowers near Taoyuan, a large number of carnivorous insects come to feed and destroy them in sunflowers. In the early spring, a tube of paper is placed on the trunk, the opening is downward to prevent the velvet beetles from being unearthed on the trees, and the artificial capture is strengthened; Ropes, trapping trees and pests that have been devastated by winter, were released in December. Finally, fruit bagging or high fat film spraying is used to prevent fruit from being directly harmed to reduce the direct drug on the surface of the fruit. Second, pest and pest control and biological methods: Many pests have their natural enemies, such as food fly, grasshopper, seven-spot ladybugs, etc. to feed on aphids; Trichogramma and Trichogramma can control Apple's many leaf curls Insects and blows; use of red ladybugs can effectively control citrus blowing. Through reasonable intercropping of crops, planting green manure and beneficial plants in orchards, improving the ecological environment of orchards, attracting natural enemies, or releasing them by artificial feeding, introducing natural enemies, increasing the number of natural enemies, restoring their natural control, and making full use of natural enemy control effects. Parasitic eggs of parasites are usually collected in the early winter to protect them from overwintering or artificial breeding, releasing them before a large number of insect pests occur. Strengthen the artificial control and physical control. Before the wintering of the pests, the trunks are tied with grass, and then burned down after winter; in the early winter orchards, deep turning, shaving the trees, whitening the trees, etc. eliminate a large number of overwintering pests and diseases. During the growing season, pruning and cutting pests and fruits in time (leaves and shoots) are manually captured. According to the traits of insect pests, sexual attractants were used to trap and kill, sweet and sour liquids were trapped and trapped, Jiaduo vibration type insecticidal lamp trapped and killed, the population density was reduced, and the number of chemical defenses was reduced. Third, the rational use of chemical pesticides: In accordance with the principles of green fruit production and pesticide use rational selection of pesticides. The production of green fruits advocates the use of microbial agricultural sources such as agricultural antibiotics 120, polyoxygenase (Polaroid), avermectins (schizophylline, insect liming), Bt (Bacillus thuringiensis), etc.; plant-derived pesticides, such as Nicotine, green Baowei (Shuguojing), pepper water, Bacteria, pyrethrum, etc.; Insect growth regulators such as diflubenzuron No. 3, Kasik, anti-inhibitory, fluoxetine, etc.; mineral source pesticides, Such as lime sulfur, Bordeaux mixture, diesel emulsion, Soligo, etc.; prohibit the use of highly toxic high residue pesticides, such as Formamide, monocrotophos, dicofol and so on. The production of Grade A green fruits can also be limited to the use of low-toxicity, low-residue pesticides, such as acetaminophen, chlorothalonil, imidacloprid, thiophanate-methyl, sulfothion, chlorbenzuron, nisolon, cypermethrin, etc. These pesticides are generally allowed to spray only once during the growth period of fruit trees. However, AA-grade green fruits can only use biogenic pesticides (including microbial pesticides, animal-derived pesticides, and plant-derived pesticides) and mineral sources.
Orthopaedic Padding,Cotton Padding,Padding Bandage
Catheters And Tubes Co., Ltd. , http://www.cnmedicalinstrument.com