松突圆蚧

松突圆蚧等5种松树有害生物在福建省潜在危险性的定量分析

Risk analysis of five pests on Pinus spp. in Fujian Province

利用时间序列分析方法研究了松突圆蚧自然种群序列和气候序列之间的关系。

Using the analyzation of time series data , the relation of the pest population time series data and climate 's factors was studied .

因此认为，4月份是防治松突圆蚧的重要时期，在野外调查取样中，应充分考虑枝条及部位间的差异，确定科学的取样方法。

In field investigation and sampling , the difference between branches and positions should be taken into consideration and the sampling method should be scientific .

对松突圆蚧与松突圆蚧花角蚜小蜂的种间关系用微分方程组模型进行了研究。

A set of differential equations was established to describe the interaction between Hemiberlesia pitysophila Takagi and Coccobius azumai Tachikawa based on the investigation data in various fields .

该蜂的雌性幼虫是松突圆蚧雌蚧的初级内寄生蜂，而雄性幼虫则是次级寄生蜂，重寄生在同种或它种膜翅目的老熟幼虫、预蛹和蛹上。

Pitysophila females , whereas male larvae are secondary parasites , and develop on the mature larvae , prepupae and pupae of their own kind and other hymenopterous species .

通过对被松突圆蚧不同程度危害的马尾松针叶内主要营养物质的测定，表明受害马尾松针叶内总糖和可溶性糖含量随着危害程度的加重先降低后增加；

Based on the determination of the nutritious ingredients ( soluble sugars and total sugars ) in the damaged masson pine needles , the results indicated that the contents of total sugar and soluble sugar increased firstly and declined subsequently as the damage degree increased .