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苹果是青海省主要果树之一,占总果树面积65％。 198—1990两年,四次调查了15个县近100个苹果园害虫越冬生物学特性。害虫有27种,其中:树上越冬的25种,落叶中1种,土中越冬1种。以卵越冬的5种,幼虫越冬的15种,蛹越冬的3种,成虫越冬的4种。鳞翅目13种,鞘翅目3种,半翅目1种,同翅目6种,蜱螨目4种。普遍发生严重的11种,局部发生严重的9种,普遍与局部轻度发生的7种。文章提出了加强种苗、接穗检疫;冬刮树皮、涂白;结合修剪,剪除虫枝;清洁田园、扫除落叶;深翻果园,防除害虫等防治措施。
Apple is one of the main fruit trees in Qinghai Province, accounting for 65% of the total fruit trees. 198-1990 In the past two years, the overwintering biological characteristics of nearly 100 apple orchard pests in 15 counties were investigated four times. There are 27 species of pests, of which 25 are wintering trees, 1 is deciduous, and 1 is overwintering in soil. 5 species of overwintering eggs, 15 species of overwintering larvae, 3 species of overwintering pupae and 4 species of adult overwintering. 13 species of Lepidoptera, 3 species of Coleoptera, 1 species of Hemiptera, 6 species of Homoptera and 4 species of Acarina. There were 11 common serious diseases, 9 serious local diseases and 7 common and partial mild ones. The article put forward to strengthen the seed and scion quarantine; winter scratch the bark, Tu white; combined with pruning, cutting off branches and worms; cleaning the countryside, sweeping the leaves; deep turnip orchard, pest control and other prevention and control measures.