论文部分内容阅读
柑桔矢尖蚧属同翅目,盾蚧科害虫。近年在仪陇县90%以上的柑桔园发生严重,成为我县柑桔的主要害虫。1985年统计:全县因柑桔矢尖蚧危害造成死树近5.2万株,占柑桔栽植总数(62万株)的8.4%,占柑桔结果树(25万株)的20.8%,受害果树枯枝落叶、树势极度衰弱,产量大幅度下降,1985年产量损失达7.5万公斤,并且果实商品价值极低。为了有效地控制矢尖蚧的危害,主要采取了以下对策,收到了很好的效果。 1、生物防治。保护、
Citrus sinensis is a homoptera, Hypanthium insects. In recent years, more than 90% of Yilong County citrus orchard serious, become the main citrus pests in our county. Statistics of 1985: Nearly 52,000 dead trees were caused by citrus scales, accounting for 8.4% of the total number of citrus cultivars (620,000) and 20.8% of the citrus fruit trees (250,000) Fruit tree litter, the extreme weakness of the tree, a substantial decline in production in 1985 lost production of 75,000 kg, and the fruit commodity value is very low. In order to effectively control the harm of Agrimony scale, the following countermeasures have been taken and good results have been received. 1, biological control. protection,