核桃基腐病发病环境调查及防治试验初报

对阿克苏地区核桃基腐病发病环境进行了调查,并对其进行了药剂防治试验。结果表明,核桃基腐病的发生与栽植密度、树龄、间作模式以及灌水次数有密切关系。栽植密度为(6 m×4 m)的果园发病程度较重,发病率达2.7%,盛果期(11~20 a)的核桃树发病较严重,发病率高达14.20%,不同间作模式发病率不同,核桃与小麦间作时发病率较高,达7.80%,随灌水次数增加病害发生程度也有增加的趋势,调查灌水前发病率为9.60%,第3次灌水后发病率增至15.94%。药剂防治结果表明,从施药方法上来看,刮除病斑涂抹药剂效果优于划道和直接涂抹。从药剂的效果来看,腐烂克星+轮腐1号混合施药效果较好,防治效果达到了83.30%,病疤愈合效果39.80%,其次,自制药剂大蒜液+10%食盐愈合效果达到了16.30%,效果较好。

A Preliminary Report on the Survey and Control Test of Surroundings of Occurrence of Walnut Stalk Rot

The objective of this study was to survey the surroundings of occurrence of walnut stalk rot and its control test.The result showed that this disease has a close relation with planting density,tree age,intercropping model and irrigation times.The occurrence extent of walnut stalk rot in the orchard with planting density of 6 m×4 m was relatively serious.The percent infection reached 2.70%,but at full-fruit stage（11-20 a） it becomes more seriously.It was different when different intercropping model was adopted.It reached 7.80% when intercroping walnut with wheat were adopted.The percent infection of walnut stalk rot was increased along with the increase of irrigation times.It was 9.60% before irrigation survey.The percent infection was increased by 15.94% after 3rd irrigation.The result of control test of fungicides showed that fulankexing＋lunfu1hao has higher effect than that of other fungicides.It is 83.3%.Garlic＋10%salt has better result,it is 16.30%.