期刊论文

STUDIES ON DAMAGE AND CONTROL ACTION THRESHOLD OF Laelia coenosa(H bner)ON SILVER GRASS Miscanthus sacchariflorus Benth

中文

湖南农业大学学报(自然科学版)

1007-1032

1995

01

52-55

10.13331/j.cnki.jhau.1995.01.011

益阳地区立项的协作研究课题；

本校为第一机构

芦毒蛾是危害荻的主要害虫之一。１９９１和１９９３年在沅江市万子硝苇场进行罩笼接虫试验的结果表明，不同虫口密度对荻生长及产量有显著影响。根据产量损失率的测定，确定了芦毒蛾的经济受害允许损失水平为５．７５％；由此得出洞庭湖区第一代芦毒蛾的防治指标为：每株荻４．３头芦毒蛾幼虫。

Laelia coenosa(H bner)is one of chief insect pest silver grass Miscanthussacchariflorus.Experiments were conducted in 1991 and 1993 in the reed field of WanziLake of yuanjiang county respectively.The enveloping test indicates that the effects on differ-ent larvae population are significant for growth and yield in silver grass Miscanthus sacchariflorus.The economic injury level is 5.75% on the bases of determination of yield lossrates.According to the experimental result,the control action threshold of first generationis developed as 4.3 larvae/p...