胡杨幼苗黑星病初步研究

对发生于新疆吉木萨尔是胡杨上的黑星病进行了调查研究，经鉴定该病是由山杨黑星孢菌(Fusicladium tremulas (Fr.)Aderh]引起。病害的发病程度与品种有关，不同胡杨品种的感病程度依次为：胡杂1号＞胡杂3号＞胡杂4号＞胡杂2号＞胡杂5号；苗高、地径及叶甲数量与感病指数之间无显著相关性。

A Primary Study on Poplar Scab of Populus euphratica

Tnvestigation on popular scab of populus euphratica occurred in Xingjiang Province was done. The pathogen has been identified as Fusichadium tremulae (Fr.) Aderh. The results of investigation in the field indicated that there were significant differences in susceptibility among different varieties, of which populus euphratica X Huza 1 variety was the most susceptible to the disease and then followed by Populus euphratica X NO.2,3,4. Populus euphratica X huza No.5 was the most resistant to the disease. Correlations Could not bee found amang the height diameter, at ground flea beetle quantity and the disease.