高山萝卜地下害虫种类及发生规律

2010～2013 年，在海拔1 800 m 的湖北省长阳土家族自治县火烧坪乡萝卜生产基地，通过田间调查和黑光灯诱集相结合的方法研究高山萝卜地下害虫种类及发生规律。结果显示：高山萝卜常见地下害虫有4 目7 科11 种，其中以小地老虎〔Agrotis ypsilon（Rottemberg）〕、黄曲条跳甲〔Phyllotreta striolata（Fabricius）〕和灰地种蝇〔Delia platura（Meigen）〕为害最重。高山萝卜地下害虫发生程度与季节有关，小地老虎的为害集中于6 月中下旬及7 月中旬；黄曲条跳甲的为害集中于8 月；灰地种蝇的为害集中于5 月。高山萝卜地下害虫的防治应以小地老虎、灰地种蝇和黄曲条跳甲作为重点。

Underground Pest Species and their Occurrence Regulation of Radish

To study the underground pest species and their occurrence regulation，field surveys were carried out from 2010 to 2013，by black light lamp trap method at alpine redish（Raphanus sativus） production base with 1 800 m altitude in Huoshaoping Town Changyang County of Hubei Province. The results showed that there were 11 species of alpine radish underground pests belonged to 4 orders and 7 families. Among them Agrotis ypsilon，Phyllotreta striolata and Delia platrua were dominant insect pests，which could cause serious damage. A. ypsilon had great population density in mid，late June，and mid July. P. striolata had great population densitiy in August.D. platura was found in radish fields with great population density in May. This paper suggests taking A. ypsilon，P.striolata and D. platura as main targets for developing underground pest forecasting and management strategy.