【摘要】 近年,在矮砧密植苹果园发现苗木栽植后幼树主干上的枝干轮纹病发生严重,急需有效的防治方法。针对生产中的需求,本研究对幼树枝干轮纹病的防治方法进行了探索,结果显示:用乳胶液配制的戊唑·多菌灵·乙膦铝混合剂对枝干轮纹病防治效果显著高于同种药剂的水溶液,对剪锯口枝干轮纹病防治效果可达63.7%~100%,是药剂水溶液防效的2~3倍;生长季施用2次,对枝干轮纹病病斑的铲除率为45.2%,是药剂水溶液防效的9.6倍以上。结果表明,戊唑·多菌灵·乙膦铝乳胶液对枝干轮纹病防治效果显著,可以用于苗木剪锯口的防护,以及新建果园中幼树枝干轮纹病的治疗。研究结果为生产中幼树枝干轮纹病的防治提供了有效的方法。更多还原

【Abstract】 Apple ring rot caused by Botryosphaeria dothideais one of the most important diseases in apple production in China.In recent years,outbreak of this disease on trunk of newly planted apple trees was observed in many places in newly established apple orchards.Therefore,effective control measures for this disease are highly demanded.In this study,we tested the control efficacy of fungicides with or without adding latex on this disease on apple branches in field trials.The results showed that the treatment of mixture containing tebuconazole and carbendazim fosetyl-aluminium with latex had significantly high prevention efficacy on pruning wounds and significantly high eradication efficacy for B.dothidea,which was 2-3 times as high as the treatment of the same fungicide without latex.Results of this study also showed that applying this chemical mixture with latex on diseased trunk yield an average eradication rate of 45.2%,which was 9.6 times as high as the treatment of the same fungicide without the latex.In conclusion,results of this study showed that the chemical mixture of tebuconazole and carbendazim fosetyl-aluminium with latex has good control effect to apple ring rot and it can be used to protect the pruning wounds and to control the ring rot disease on trunk of young trees.This study provides an effective method for controlling ring rot on pruning wounds and on trunk and branches of young apple trees.更多还原