尖扎县草地虫害及防治对策

THE JIANZHA PRAIRIE INSECT PEST WILL PREVENT AND CONTROL THE REVIEW AND NEXT PREVENTING AND CONTROLLING COUNTERMEASURE

尖扎县草地害虫主要是蝗虫,其次是草原毛虫,集中分布在尖扎滩乡、当顺乡和能科乡的土壤沙质大的干旱草地上。2008年尖扎县蝗虫发生面积达2.067×104hm2,平均虫口密度为53.8头/m2,其中危害面积1.333×104hm2,占全乡可利用草地面积(5.634×104hm2)的23.7%,危害区损失牧草达500×104kg(按375kg/hm2)。

The jianzha prairie harmful insect mainly is a locust, next the prairie larva aculeata, its centralism distributes in the jianzha beach township, works as along the township and can the branch township mountainous region prairie, the intermont basin and on the wild slope grass beach soil arid lawn. In 2008 the jianzha beach township locust has the area to reach 1. 733 × 10^4hm^2, the harm degree is 53.8/m^2, in which harm area 1. 333 × 10^4hm^2 （ 〉 25/m^2 ）, occupy the entire township may use the pasture area （5. 634 × 10^4hm^2 ） 23.7%,the harm area loss forage grass reaches 50 × 10^4（ acconting to 375kg/hm^2）. This article in view of the insect pest present situation, the analysis for many years has prevented and controlled the question which in the process exists, will propose the next effective government countermeasure.