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通过对广东省试验林区内松突圆蚧Hemiberlesia pitysophila Takagi及其本地种寄生蜂友恩蚜小蜂Encarsia amicula Viggiani et Ren林间空间分布型和种群消长动态的调查研究发现:两者空间分布型相吻合,都为均匀分布;两者在林间全年种群消长曲线均呈“S”型变化。松突圆蚧种群密度高峰期出现在3月下旬至4月下旬,友恩蚜小蜂种群密度高峰期则分别出现在2月下旬和4月下旬至5月中旬。另外友恩蚜小蜂对松突圆蚧的寄生率全年共出现2个高峰期,分别是2月下旬和4月下旬至6月上旬。结果表明,友恩蚜小蜂和寄主松突圆蚧在林间时空发生规律具有高度一致性。
Based on the investigation of the dynamics of spatial distribution and population dynamics of Hemiberlesia pitysophila Takagi and Encarsia amicula Viggiani et Ren, a native smallpox herd in the experimental forest region of Guangdong Province, it was found that the spatial distribution patterns Are consistent, are evenly distributed; both in the forest annual population growth curve showed “S ” type changes. The population density of P. cynocephala was at the peak from the end of March to the end of April. The population density of the population of A. gossypii appeared at the end of February and the end of April to the middle of May respectively. In addition, the females had a total of 2 peaks during the year in parasitism rates of Bursaphelenchus caeruleus, respectively, in late February and late April to early June. The results showed that there was a high degree of spatial and temporal distribution of the spider beetle and host pine crassipes in the forest.