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徽县位于陇南山区,地处嘉陵江上游岭南温暖湿润区,年平均气温12℃,年降水在700毫米以上,无霜期20天,≥10℃积温3445～4047℃,海拔704～2504米。气候湿润,垂直差异明显。由于特殊的地理位置和不同的生态环境,构成了植物种类多样,农业病虫种类亦多,且发生频繁,为害严重,害虫天敌资源也较丰富等特点。为了掌握农作物主要病虫及天敌的种类、数量与分布,进行分区设防,我们从1982年起先后参加了省、地、县有关农业病虫草害及害虫天敌资源调查,现将基本查明的主要农作物病虫及害虫天敌概述如次。
Huixian County is located in the Longnan mountainous area, which is located in the warm and humid region of the south of Jialing River. The annual average temperature is 12 ℃, the annual precipitation is above 700 mm, the frost-free period is 20 days, the accumulated temperature is ≥10 ℃ 3445 ~ 4047 ℃ and the elevation is 704 ~ 2504 meters. Humid climate, vertical differences significantly. Due to the special geographical location and different ecological environment, it has many kinds of plants, many kinds of agricultural pests and diseases, frequent occurrences, serious damage and natural enemies with abundant pests. In order to grasp the main crop pests and natural enemies of species, quantity and distribution, zoning fortification, we have since 1982 participated in the provinces, prefectures and counties on agricultural pests and insect pests and natural enemies of pests resources investigation, the basic identification of the main Crop pests and pests are summarized as natural enemies.