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水杉(Metasequoia glyptostroboides Hu et Cheng)是本省平原地区的主要速生用材树种。1987年8月江苏泗洪县发现大面积水杉林遭受虫害,为害严重的叶被食光秃。这种情况在本省尚属首次。湖北省利川县水杉林1982—1983年曾遭受过水杉色卷蛾的严重为害。从害虫形态特征和生活习性观察,泗洪县发生虫种完全不同于水杉色卷蛾。现将我们的观察结果结合文献资料记述如下。 一、为害概况 1987年8月泗洪县陈圩林场发现水杉林遭受虫害。我们于9月4日前往调查,泗洪县陈圩、城头、临淮三个林场都有虫害发生,面积达2300余亩,其中树叶几被食光的
Metasequoia glyptostroboides Hu et Cheng is the dominant species of fast-growing timber in the plains of the province. 1987 August Sihong County, Jiangsu Province found that a large area of Metasequoia Lin suffered pests, severely damaged leaves were bare food. This is the first time in our province. Metasequoia glyptostroboides from Lichuan County, Hubei Province, suffered serious damage to the taxid moth during 1982-1983. Morphological characteristics and habits from the pest observation, Sihong County, the occurrence of species completely different from the Metasequoia litura. Now our observations combined with the literature described below. First, the damage profile In 1987 August Sihong County Chen Wei forest found Metasequoia Lin suffer pests. We went to the survey on September 4, Sihong County Chen Wei, the first city, Linhuan three forest farms have occurred, covering an area of 2,300 acres, of which the leaves were eaten light