摘要
对延安枣树萌芽展叶期的主要害虫与天敌进行初步调查,发现害虫27种,分属于4目20科;天敌13种,分属于2纲4目7科。延安枣树萌芽展叶期的主要害虫有5种:红缘天牛(A sias ha lo-d end ri)、枣飞象(S cy thropus yasum atsu i)、枣叶虫(C ryp tocepha lus sp.)、枣镰翅小卷蛾(Ancy lis(Anchy lop era)sativa)、枣瘿蚊(Contarin ia sp.),其中红缘天牛最多,已成为危害枣树的优势种。对于天敌方面,主要以捕食性的瓢虫类和食虫蜘蛛为主,其中七星瓢虫(Coccinella sep tempunctata)最多。
The preliminary investigation on pests and natural enemies occurred in iujube trees from sprouting to frondescing in Yan＇an was carried out between April and May. 27 species of pests were found, belonging to 3 order and 6 families. The results showed that the main pests were 5 species ： Asias halodendri, Scythropus yasumatsui, Cryptocephalus, Ancylis sativa, Contaria, in which A. halodendri was the dominant one. The main natural enemies were predatory Coccinella and Araneida ,in which the C. septernpunctata was the dominant species.
出处
《西北林学院学报》
CSCD
北大核心
2006年第5期139-142,共4页
Journal of Northwest Forestry University
基金
陕西省教育厅省级重点实验室科研与建设项目(04JS02)
延安大学科研计划项目(YD2002-06)
关键词
枣树
萌芽展叶期
害虫
天敌
jujube
germination-frondesce stage
pest
natural enemies
