山阳县“核桃黑”成因初步调查及防治策略

Preliminary Investigation into "Black Walnut" in Shanyang County and Corresponding Measures to Control

对山阳县不同立地条件下的"核桃黑"进行了调查,明确了"核桃黑"主要由核桃举肢蛾、核桃黑斑病、炭疽病、桃蛀螟等病四种虫危害所致。当地深山区以核桃黑斑病危害为主。浅山区以黑斑病和举肢蛾为主,并有零星的桃蛀螟危害。平川区以举肢蛾为主,黑斑病危害次之,桃蛀螟危害严重。提出了综合防治措施。

A survey to determine causes to the phenomena of'black walnut'in Shanyang county revealed that Atrijuglans moth,walnut black spot,anthracnose and peach punctiferalis are main pests feeding on walnut tree,resulting in'black walnut'.In the remote and high mountains,it is mainly caused by walnut black spot,whereas in shallow mountains and in nearly plain,it is caused by walnut black spot and Atrijuglans moth;occasionally by peach punctiferalis.In plain area,peach punctiferalis is a serious hazard.Considering those factors,prevention and control measures were suggested.