核桃黑斑病的危害、发生特点及防治

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中图分类号：S664.1 文献标识码：B

Damage，Occurrence Characteristics and Prevention and Control of Walnut Bacterial Black Spot

ZHAO Zhe (Baili Forest Farm，Lingtai County，Gansu Province，Lingtai Gansu 7444l2，China)

Abstract:Bacterial black spotisoneof the major diseases in walnut production.Itcaninfect the leaves，fruits，floralor gansandshootsofwalnuts，seriouslyafectingtheyieldandquality.Theoccurrenceof thisdisease tends tocausefruitstoturn black androt，leading tothedeclineofqualityand production eficiency.Theoccurrenceofbacterial black spot isaffected by multiple factors.Based on production experience，preventionandcontrolcountermeasures are proposed from theaspects ofor chard establishmentinsuitable sites，moderateclose planting，enhancement of treevigor，reductionof treedamage，regularor chardcleaning，andscientific pesticideapplication.Thepurpose is toreducethelosses caused bybacterialblack spotandother diseases and pests in production，and promote the high-effciency and sustainable development of the walnut industry.

Key words:walnut；bacterial black spot； damage; occurrence characteristics；prevention and control

黑斑病是核桃生产中的主要病害之一，为细菌性病害，可侵染核桃的叶片、果实、花钱器及枝梢，对生产危害严重，黑斑病发生会导致减产，果实变黑腐烂，品质和生产效益下降。（剩余3903字）