孟加拉国番石榴产业简况

丽绿刺蛾在海南胡椒种植区每年发生2～3代,以老熟幼虫在主蔓上结茧越冬。该虫1年有2次发生高峰期,分别在5月下旬至6月中下旬和7月下旬至9月中旬。第1代幼虫发生量大,危害严重,是防治的关键时期。根据其发生规律提出相应的防治策略。

Occurrence and Control of Latoia lepida (Cramer) Attacking Black Pepper(Piper nigrum L.)

Slug caterpillar [Latoia lepida (Cramer)] has 2 generations each year and overwinters as last instar larvae inside the cocoons they spun on the vines of black pepper (Piper nigrum L.) in Hainan Province. The slug caterpillar occurs in two peaks, from the last ten days of May to the middle or last ten days of June, and from the last ten days of July to the middle ten days of September each year. Larvae of the 1st generation occur in a large number and cause serious damage to the black pepper, which is the critical stage for control. Some pest control strategies are proposed according to its occurrence characteristics.