杨树细菌溃疡病防治技术的研究

STUDY ON CONTROL TECHNIQUE OF BACTERIAL CANKER OF POPLARS

杨树细菌溃疡病已在东北杨树栽培地区大面积发生,危害黑杨派,青扬派与黑扬派杂交种及无性系。通过抗病良种筛选试验,在黑龙江省选出Lz_2(辽杂2号)、A_(15)(小黑×波)、613(银×中)、A_(102)(小黑×黑小)♂、A_(98)(小黑×黑小)5个抗病优良品种。对轻病树可用50％DT杀菌剂、40％复合克菌灵、10％双效灵、5万ppm/ml井岗霉素、12.5％氯霉素灌根或注干,均有显明的防治效果。

The poplar bacterial canker caused by Erwinia sp. is a serious disease spreading in most parts of Northeast China, where poplars are cultivated. The disease seriously infects those poplars belonging to section Aigeiros or the intersection hybrids of section Tacamahaca and section Aigeiros and their clones. Five fine poplar cultivars resistant to the bacterial canker have been obtained by selecting tests. They are Lz_2 (Populus simoniixnigra var. italica),A15 (P. x sp.), 613 (P. x sp.), A102 and A98 (P. x simonii x sp.). The following chemicals are obviously effective, such as: 50% DT germicide, 40% XF-136 and 10% C. C. M. A. or 12.5% ramphencol and 50,000 ppm/ml validamycin, with which the stems or the roots can be watered.