摘要
鞭角华扁叶蜂在浙江省温州市主要危害柳杉 ,1a发生 1代 ,以老熟幼虫在 2～ 2 0cm土层中筑土空越冬越夏。越冬滞育幼虫次年 4月中旬开始化蛹 ,5月上旬开始产卵 ,5月下旬幼虫孵化并开始危害 ,6月中旬为危害盛期。林间防治试验表明 ,40 %氧化乐果 1 0 0 0倍液 ,施药量 30kg·hm- 2 ,4龄前幼虫死亡率为 97 5 % ,5～ 6龄死亡率为 91 3% ;2 5 %溴氰菊酯 80 0倍液 ,施药量 2 2 5mL·hm- 2 ,4龄前幼虫死亡率为 97 8% ,5～ 6龄死亡率为93 6%。表 4参
Chinolyda flagellicornis(F.Smith)is a main pest damaged Cryptomeria fortunei.It has one generation a year in Wencheng of Zhejiang and the naturation larvas hibernate in soil of 2～20 cm during winter and summer.The hibernating ungrowing larvas begin to be pupae in April of the next year,in the early May it begins to lay eggs,then the larvas begin to hatch and do harm,until in the middle of June the serious harming arrives.Control in forests could be made at the larval stage by spraying tree crowns with 1 000 fold solution (30 kg·hm -2 ) of omethoate 40EC,resulting in 97 5% of the 1～4 instars larvae being killed,and 91 3% of the 5～6 instars larvae being killed.With 800 fold sultion(225 mL·hm -2 ) of deltamethrin 2 5EC,resulting in 97 8% of the 1～4 instars larvae being killed,and 93 6% of the 5～6 instars larvae being killed.
出处
《浙江林学院学报》
CSCD
北大核心
2001年第4期420-423,共4页
Journal of Zhejiang Forestry College
