梨生育期中国梨喀木虱卵的空间分布及时序动态

中国梨喀木虱是梨树上一种重要的专食性刺吸式害虫,为明确中国梨喀木虱卵的分布及变化规律,本文对梨生育期中国梨喀木虱卵的对空间格局及时序动态进行了调查研究。结果表明：中国梨喀木虱梨木虱在叶片上的产卵量有两次高峰,分别在5月下旬和7月上旬,单叶卵量分别达到18.1头/叶和22.8头/叶；卵集中分布在叶片主脉两侧、叶柄凹槽处内以及叶缘缺刻处,叶面较少,各处所占比例呈现动态变化；在树冠上、中、下三个垂直高度层和同一水平不同方位叶片的着卵量差异并不显著。研究结果对中国梨喀木虱种群生态学研究以及可持续治理对策的制定具有重要指导意义。

Spatial distribution and time dynamics of eggs of Cacopsylla chinensis (Homoptera: Psyllidae) during the growth period of pear

Cacopsylla chinensis is a major monophagous Piericing-sucking pest on pear in china. In order to clarify the distribution and dynamics of the eggs of Cacopsylla chinensis, the paper investigated the spatial pattern and the time dynamics of the eggs during the growth period of pear. The results showed that there were two peaks of the eggs laid in the leaf from early May to early october, which reached to 18.1 per leaf and 22.8 per leaf in late May and early July, respectively. The eggs were concentrated mainly on both sides of the main vein of the leaves, the groove of the petioles and the notch of the leaf margin, while the leaf surface was less. There were no significant difference of eggs laid on leaf among the three different vertical height layers, and among the different directions on the same level. The result has the important guiding significance for the study of population ecology of Cacopsylla chinensis and the formulation of sustainable management measure.