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在皖南春季越冬代马尾松毛虫防治时期，于安徽长江以南采用不同治虫策略的５个林场，选立地条件和林分状况类似的马尾松纯林，对节肢动物和虫生真菌群落的调查表明，常年释放白僵菌的林场和长期监测虫情、准确挑治虫源地的林场害虫种数约占群落总种数的５０％，个体数约占７０％，益害物种数比（Ｎｓ／Ｐｓ）为０．７２～０．８３，个体数比（Ｎｎ／Ｐｎ）为０．４４～０．４５，多样性指数（Ｈ′）波动小，松毛虫虫口≤２．０条·株－１。交替放菌和施药的林场，滥用农药、尤其不治虫的林场，害虫种数约占群落总种数的６０％左右，个体数＞７４％，Ｎｓ／Ｐｓ０．４６～０．５４，Ｎｎ／Ｐｎ０．２３～０．３４，Ｈ′波动大，松毛虫虫口６．０～１０．０条·株－１，超过防治指标（５条·株－１）。长期的放菌或及时施药挑治利于优化群落结构，增大多样性指数，强化生态控制的力度
During the winter overwintering generations of Dendrolimus punctatus in Anhui Province during the control period, five tree farms with different pest control strategies were used in the south of Yangtze River in Anhui Province. The investigation of arthropod and entomogenous fungi communities in selected pure stands of Pinus massoniana plantations with similar site conditions and stand conditions , Perennial Beauveria bassiana forest farms and long-term monitoring of insects, insect pests accurately pick the source of the species accounted for about 50% of the total number of species, individuals accounted for about 70%, species number (Ns / Ps ) Was 0.72-0.83, and the individual number ratio (Nn / Pn) was 0.44-0.45. The diversity index (H ’) fluctuated little and the population of pine caterpillars was less than 2.0 lines per plant. In particular, the number of pests accounted for about 60% of the total species in the community, with an individual number> 74%, Ns / Ps 0.46 ~ 0.54, Nn / Pn0.23 ~ 0.34, H ’volatility, Moth coccidia 6.0 ~ 10.0 · plant -1, more than control indicators (5 · -1). Long-term bacteriosis or timely application of pesticides is conducive to optimizing community structure, increasing diversity index and strengthening ecological control efforts