镇康县膏桐林病虫害调查初报

于2008年3～4月在镇康县勐捧乡流水村膏桐种植基地对膏桐林病虫害进行了初步调查,结果显示:膏桐林主要受到地下害虫的危害,害虫类群及发生率分别是白蚁77.78%、金龟22.22%、金针虫22.22%,其中白蚁的危害指数达到52.78;主要病害有膏桐茎腐病及膏桐根腐病,其危害率分别为9.67%、3.17%,危害指数分别为7.83、2.22.另外,冻害的危害率达13.0%;幼林管护中存在牲畜破坏的问题,因放牧造成的机械损伤达18.67%.提出了把好育苗关、进行科学造林、适时管护和病虫害防治等病虫害控制建议.

Preliminary Report on Diseases and Insect Pests of Jatropha carcass Plantation in Zhenkang County

Preliminary survey on diseases and insect pests of Jatropha carcass plantation had been done in Liushui village of Zhenkang county during March to April of 2008.The results showed that the plantation of Jatropha carcass was mainly damaged by underground worms,and percentages of the occurrence of termites,grubs and wire worms were 77.78%,22.22% and 22.22% respectively;and harmful index of termites amounted to 52.78.The main diseases were stem rot and root rot,the damage rates were 9.67% and 3.17%;and damage index were 7.83 and 2.22 in order.Besides,the damage rate of freeze injury was 13.0%,and the mechanical damage caused by grazing also existed in the management of young plantation with the rate of 18.67%.Therefore,the paper put forward several measures for disease and insect pest control concerning quality of seedling raising,scientific afforestation and proper tending and management.