沙地樟子松球果象甲种群动态及数量特征

Population Dynamics and Quantitative Characteristics of Pissodes validirostris Gyll. for Scotch Pine in Sandy Areas

根据内蒙古红花尔基林业局所设样地的樟子松球果象甲密度10a间的调查资料,对沙地樟子松球果象甲种群动态及数量特征进行了分析,采用不同年度间象甲密度的差异显著性来预测象甲发生的大、中、小年,为采取防治措施提供参考依据。

An investigation on the population density of Pissodes validirostris on Scotch pine was conducted during ten years in Honghuaerji Forestry Bureau. The population dynamics and its quantitative characteristics were analysed according to the investigation data. The significance in differences between different years was used to predict the degree of population density and to determine whether it was serious, moderate or minimal occurring year, which would provide some good references for adopting suitable control measures.