杨树溃疡病药剂防治试验

Experimental Control of Dothiorella Gregaria in Poplars with Fungicide

在辽宁杨树溃疡病4月初开始发生,4月末至5月中旬为发病盛期,6月中、下旬基础停止。9月上、中旬出现第二次高峰。1987～1990年防治总面积4.3万亩,用11371.腐牛清、不脱酚洗油、福美砷、而碱水涂抹病斑和用福美砷,多菌灵喷雾,均获较好防治效果。

In Liaoning Province this disease occured in the beginning of April and reacted to its peak from the end of April to the later part of May, and generally stopped in the later part of June.Some years,there was a sacond peak in the earlier part of September.From 1987 to 1990,the total curing area of the disease had reach d to 43000mu.Smearing of 11371 Fubiging or non-phenol free washing oil was confirmed to be effective in controlling this disease,and so was spraying of Asomate and Bavistim Solution.