摘要
在江苏省宿迁地区,紫薇绒蚧(Eriococcus lagerostroemiae)是危害紫薇(Lagerstroemia indica Linnaeus)最严重的害虫之一。本研究发现,紫薇绒蚧在宿迁每年发生3代,以若虫和雌成虫的形式在紫薇树体上越冬。第二年4月下旬先后化蛹、羽化,进行交配和产卵。若虫每年有3个发生高峰期(5月下旬至6月中旬、8月上旬至8月中旬、9月下旬至10月上旬),紫薇绒蚧防治的重点时期在4月下旬越冬若虫活动高峰期和6月中旬若虫成熟高峰期。研究结果表明,春季防治以5波美度石硫合剂的效果最好,夏季防治首选2.5%高效氯氟氰菊酯+5.0%阿维菌素300倍液。
Eriococcus lagerstroemiae is one of the most important pests causing severe damages to Lagerstroemiae in- dica Linnaeus in Suqian,Jiangsu province. The research results showed that Eriococcus lagerstroemiae completed three gen-erations every year and overwintered in nymphs and female adult in the host twigs. Until late April of the next year,they pu-pated, emerged,mated and laid eggs. Three peaks of nymphs occurrence were recorded from late May to mid-June,early to mid-August and late September to early October,respectively. The proper control period was late-April when nymphs ap-peared frequently and mid-June when nymphs matured. Five baume degrees LSSS showed the best control effect on the pest in the spring,while 2.5% lambda cyhalothrin ＋ 5.0% avermectin （300 times diluted） was the best choice in the summer.
出处
《江苏农业学报》
CSCD
北大核心
2017年第5期1022-1027,共6页
Jiangsu Journal of Agricultural Sciences
基金
江苏省农业科技自主创新基金项目[CX(14)2043]
关键词
紫薇绒蚧
紫薇
生活史
防治方法
Eriococcus lage rstroemiae
Lagerstroemiae indica Linnaeus
life cycle
prevention
