摘要
对武义县板栗林中为害较为严重的淡娇异蝽30多年的观察和防治试验表明,淡娇异蝽1年1代,以卵越冬,越冬卵一般在2月下旬至3月上旬孵化,4月上中旬若虫开始为害嫩梢,5月中旬至6月上旬陆续进入成虫期,10月底或11月初开始产卵越冬;若虫发育历期34～61 d,3龄若虫对板栗危害最严重;成虫历期145～213 d;卵期102～135 d;无公害防治采取刮除卵块,石硫合剂喷雾,2.5%的溴氰菊酯、10%吡虫啉防治淡娇异蝽药效最好。
Observations and control tests during 30 years on Urostylis yangi, damaged to Castanea mollissima in Wuyi, Zhejiang province demonstrated that it has one generation a year, overwinters by egg, which hatches by the end of February and early March. Nymph damages new shoot ofC. mollissima in early and middle April, and turns to adult in middle May and early June, lays egg and overwinters by the end of October or November. Nymph develops about 34-61 days, with 3-instar damages the most. 145-213 days are for adult and 102-135 days for egg. Control measures included such as removal of eggs in the winter, spraying lime sulfur, 5000-fold of 2.5% Deltamethrin or 2000-4000-fold of 2.5% Cyhalothrin.
出处
《浙江林业科技》
北大核心
2012年第3期39-42,共4页
Journal of Zhejiang Forestry Science and Technology
关键词
淡娇异蝽
生物学特性
无公害防治
板栗
Urostylis yangi
biological property
non-pollution control
Castanea mollissima
