<正>采用动态过滤分析技术测定高岭土填抖在纤维上的吸附特性，并研究了细小纤维含量、浆料温度、剪切力、助留剂、混台时间和浆料pH对高岭土在纤维上吸附的影响。结果表明：动态过滤分析法可以正确地评价填料在纤维上的吸附特陛；吸附是填料助留的重要机理之一；纤维的比表面积对填料在纤维上的吸附率有很大的影响；助留剂的使用及其添加顺序明显影响填料的吸附率。此外，温度和搅拌速度对填料在纤维上的吸附也有一定影响。

The black blotch canker of poplars which is a new kind of poplar canker disease occurred in north Jiangsu recently. Research on this disease indicated that it was the main death reason of new planted poplars in this area. According to isolation and identification results, this disease could be caused by Fusicoccum aesculi and Phomopsis macrospora. For F. aesculi, the conidium is single, fusiform and the base truncation. Its size is between (17.5--27.5)μm × (4.0--5.5) μm and the average size is 23.5 μm × 4. 5μm. The conidiospores are transparent, which are branching near the bases. Its average size is 21μm～2.0 μm for P. macrospora, two shapes of conidia are found, i.e. fusiform and linear with curved top. Two pathogens which inoculated the stem of the poplars respectively, caused poplar to have little black spots. The mixed inoculation with two pathogens could aggravate the diseases by forming big black blotch.