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Position: Home > Articles > Investigation on occurrence rule of Gastrolina depressa Forest Pest and Disease 2018 (2) 43-45

核桃扁叶甲危害规律调查

作  者:
王兴旺;许建;庞宗奎;王敦
单  位:
巴中市林业局;西北农林科技大学昆虫学研究所
关键词:
核桃扁叶甲;园地类型;树龄;方位;寄主偏好
摘  要:
在四川省巴中市恩阳区系统调查寄主植物种类、树冠方位、园地类型、树龄等因素对核桃扁叶甲Gastrolina depressa Baly发生危害的影响,探讨核桃扁叶甲发生危害规律。结果发现:核桃扁叶甲最喜食寄主为枫杨Pterocarya stenoptera,其叶片受害率约是核桃Juglans regia的2倍;核桃树冠中下层叶片受害率极显著高于顶层,西、南向的叶片受害率显著高于北、东向;树龄5~10 a核桃叶片受害率明显高于树龄5 a以下幼树和10 a以上大树;不同核桃园地类型中,坡地中部的叶片受害率极显著高于坡顶和平地,显著高于坡底。
译  名:
Investigation on occurrence rule of Gastrolina depressa
作  者:
WANG Xingwang;Institute of Entomology,Northwest A & F University;
关键词:
Gastrolina depressa;;land type;;tree age;;niche direction;;host plant preference
摘  要:
An investigation was carried out for occurrence rule of Gastrolina depressa in Enyang district of Bazhong city in Sichuan province. The relationship between pest occurrence and the factors of host plants for G. depressa, the canopy layer direction, land type and tree age were analyzed to reveal the damage rule of G. depressa. The results showed that the host plant preference of G. depressa was Pterocarya stenoprera but not walnut tree,and the damaged rate of P. stenoprera was almost two times higher than that of walnut tree. The leaf damaged rate was significantly higher in the south and the west direction and non-top layers of canopy,as well as the 5-10 years old walnut trees and the garden at middle slope.

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