Glass Instrument,Laboratory Glassware,Lab Glassware Glass Ampoule,Caps Or Seals,Moulded Vials Co., Ltd. , http://www.ns-pharmaceutical.com
Fruit tree pests ecological control technology
The pests in orchards and their natural enemies are interdependent and mutually restrictive. In the production process, this relationship is used to supplement the strict agricultural operations, which can avoid the harm of pests and are extremely beneficial to the production of green fruits. I. Classification of Natural Enemies of Pests in Fruit Trees Pests Natural enemies are insects that coexist with pests and are mainly divided into two major categories: predatory and parasitic. Predatory natural enemies mainly include predatory ladybugs, grasshoppers, florets, thrips, flies and parasites. When pesticides are used in orchards, they must fully protect predatory natural enemies and ensure the protection of pests and natural enemies. Second, the ecological balance prevention and treatment 1, the late dormancy prevention of fruit trees. The late dormancy period of fruit trees is a time when a large number of pests of overwintering produce larvae. At this time, natural enemies of pests have not yet emerged, which is the best time for prevention and control. The 5 degree lime sulfur should be sprayed on the whole garden in early spring on the basis of fully frying and scraping the adult pests, maggots, twigs of eggs, bark, and burning. Since then, according to the monitoring results of insect pests, using the weak resistance of pests infested and sprayed with a targeted medicament in a timely manner can have a multiplier effect. 2, selective medication. In production, there are many pesticides in the control of pests, while natural enemies of selective pesticides. Pesticides should be used more and more with such agents, mainly include diflubenzuron, chlorfenapyr, buprofezin, Bacillus thuringiensis, Beauveria bassiana, Bt, etc. in insecticides, avermectin and nitrone in acaricides. Lang et al. 3, orchard grass. Grass orchards in the orchard, especially among rows of grass, can effectively regulate the orchard's fertility and water supply, and it is also conducive to breeding and activities of natural enemies of pests. More importantly, when pests are controlled, natural enemies can escape from the grass to avoid killing them. Orchard rows between the grass, generally legume forage, such as alfalfa, ryegrass, white clover and so on.