板栗胴枯病病害调查与防治试验

Investigation and Prevention of Endothia parasitica in Chinese Chestnut

为掌握板栗胴枯病的发病规律,有效防治该病的发生,在2004～2006年在陕西省镇安县板栗产区对该病的危害症状、病原传播方式、发病条件及发病规律进行了调查,并通过不同时期、不同药剂防治试验。结果表明,在镇安县3月中旬至4月中旬是该病的发生高峰;每年3月下旬,采用刮除发病部位树皮、伤口涂抹40%福美砷药剂,并对全树喷洒的方法,对板栗胴枯病的防治率可达84.3%,具有较好的防治效果。

Outbreak regularities of Endothia parasitica ocourred in Chinese chestnut, were studied from the aspects of damage symptom, transmitting pattern, and occurrence conditions. Different pesticides were examined. The results showed that the peak season of outbreak was from mid-March to, mid-April. In late March. curettage of diseased bark, application of 40% asomate, and spraying the whole tree could effectively control E. parasitica with a rate of 84.3%.