北京市人工栽培紫苏病虫害发生规律的初探

为摸清北京市人工栽培紫苏的病虫害发生情况，本试验针对露地、设施2种栽培模式，通过灯诱、抽样调查等方法进行2年病虫害监测；露地栽培紫苏的常发虫害为紫苏野螟、甜菜夜蛾，为害高峰期为7—8月；设施栽培紫苏的常发虫害为温室白粉虱、红蜘蛛，为害高峰期为6—9月。紫苏的常发病害为斑枯病，露地栽培模式下在6—10月发生，其中7—9月发病最为严重；设施栽培模式下发病主要集中在5—10月，其中6月下旬到9月下旬发病最为严重；露地栽培紫苏的常发虫害为紫苏野螟、甜菜夜蛾，病害为斑枯病；设施栽培紫苏的常发虫害为温室白粉虱、红蜘蛛，病害为斑枯病。

Preliminary Study on the Occurrence Regularity of Main Diseases and Pests on Perilla frutescens var. Crispa Under Artificial Cultivation in Beijing

In order to define the occurrence regularity of main diseases and pests on Perilla frutescens var. Crispa. in Beijing, the monitoring methods of light trap and sample surveys were used in both open field and greenhouse for two years. In the open field, Pyrausta phoenicealis Hubner and Spodoptera exigua Hubner were the main pests, and the damage peak appeared from July to August. In the greenhouse, Trialeurodes vaporariorum Westwood and Tetranychus cinnabarinus Boisduval were the main pests, and the damage peak appeared from June to September. The common diseases on Perilla frutescens var. Crispa was spot blight. It occurred from June to October and the most serious period was from July to September in the open field. In greenhouse, it occurred from May to October and the most serious period appeared from late July to late September. Common pests and diseases in the open field were Pyrausta phoenicealis Hubner, Spodoptera exigua Hubner and spot blight. Common pests and diseases in the greenhouse were Trialeurodes vaporariorum Westwood, Tetranychus cinnabarinus Boisduval. and spot blight.