中华松针蚧的危害对油松生长量的影响

The Effect on the Increment of Chinese pine (pinus toobulaeform) Damaged by Matsucoccus sinensis chen

中华松针蚧对油松的危害报道极少.本文通过在河南省南召县对受害油松的大面积调查,明确了该虫的危害特点,种群扩散、蔓延动态及受害树的反应特征;并对受害树的受害程度进行了多指标分级.根据树干解析和协方差分析,证明油松连续受害4年后,材积生长量明显下降,且树龄愈小,对蚧虫危害的敏感性愈高.

The report that Matsifcocciis sinensis chen attacks Chinese pine ( pintis toobtflaeform) has not been stated too much. After the investigation of attacked Chinese pines in large area in Nanzhao County, Henan Province, We obtained the pest's spoiling process feature, the population spread developments as well as the spoiled trees' action characteristics. Graded the degrees of the demeged trees according to multi-index, by the tree trunk analysis and the analysis of covariance, it is clear that continuously attacked by the best for four years, Chinese pine's timber volume increments decreased obviously, and the trees' sensation of the pest vary with different ages.