蔬菜害虫防治技术的发展与应用

<正> 我国幅员广、气候差异大、蔬菜品种多、茬口复杂、其害虫种类已达300多种,重要的有40余种。其发生情况常因蔬菜品种、栽培制度、气候类型不同而异。其

INTEGRATED CONTROL OF VEGETABLE INSECTS IN CHINA

Among 300 odd species of vegetable insect pests, there are about40 important species. In general, 15%-30% loss of vegetable production is cau-sed by the damage of insect pests per year.In the 1950s to mid-1970s, the techniques of insect pest control were develo-ped from primeval methods to the simple use of chemical insecticides. Since mid-1970s,the integrated control of vegetable insect pests (or IPM) and the productionof pollution-free vegetables on large scale have been developed rapidly.The investigation and prediction of insect pests, which are the basis of IPM,have been standardized and have played important roles.The principal strategies of integrated control of vegetable insect pests arethat, on the viewpoints of ecology, economics and society we should harmonizethe application of some necessary measures: agricultural and physical control asfoundation, rational use of insecticides, substitute of broad spectral insecticidesby selective chemical or microbial insecticides, protection and utilization of natu-ral enemies, etc.Consequently significant benefits of economics. ecology and society have beenobtianed. Infestation of insect pests has effectively been controlled under the ec-onomic injury threshold (EIT) and vegetable yield has increased. Amount of in-secticides were below the level allowed by nation and internation. These are veryfavorable to the estabilishment of less-pollution or non-pollution vegetable ecosy-stem and to the protection of environment.