兰州市区桑白盾蚧发生规律与防治试验

Occurrence Regularity And Control of pseudaulacaspis Pentagone in Lanzhou

通过对兰州市行道树上的桑白盾蚧进行综合防治 ,总结出了在 4月用 5波美度石硫合剂 ;5～ 6月、8～ 9月用体积分数 4 0 %氧化乐果或 4 0 %水胺硫磷 10 0 0倍液 ;7～ 8月根施呋喃丹以及打药时采用围绕树干四周喷药的方法 ,从而提高了防治效果 ,平均死亡率达

Integrated management of Pseudaulacaspis pentagona in avenue trees of Lanzhou city showed that in April 5°Be lime sulphur solution cold be used,from May to June and August to September 40% onethoate or 40% isocarboph-os s 1000 times be used ,From Junly to August the average deathrate was 88%. When carbofuram used around the root and the secticide Sprayed around the stem.