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枣树星天牛人工防治技术新郑市枣树研究所孙文奇，荆自忠，周沛云星天牛是杂食性蛀干害虫，八十年代在新郑枣区转主为害枣树。发生量逐年上升，１９８９年调查平均受害株率２４．７％，严重幼龄枣园被害株率高达８４％。枣树被害后轻者树势衰弱，叶片发黄，落花落果，产量...
Jujube Astrology Artificial Prevention and Control Xinzheng Jujube Tree Research Institute Sun Wenqi, Jing Zizhong, Zhou Peiyun is a omnivore boring pests in the eighties in the victim of jujube transfer victim jujube tree. The amount of occurrence increased year by year, 1989 average strain surveyed 24.7%, juvenile jujube serious grazing rate as high as 84%. Jujube trees after the victims of weak light, yellow leaves, falling flowers, yield ...