杨树红心病的形成原因

Studies on the Cause of Formation of Poplar Red Core Wood

通过野外调查、室内病菌的分离和室内外接种及田间化学药剂的防治试验,研究杨树红心病形成原因。结果表明,杨树红心病的产生是以杨树生理现象为主导,多种细菌、真菌共同作用引起的结果。只要杨树枝干上存在损伤,即可引起心材变色,在伤口上接种相关真菌、细菌则可使变色加重。此外,化学杀菌剂林间防治效果不明显。

The investigation showed that red core wood of poplars was the result of the physiological action of trees that played a key role and the infection by bacterium and fungus by investigating in the forest field. By separating, inoculating pathogens and control test in both laboratory and field, core stain should occur if only poplars were damaged. It should aggravate core stain if poplars were inoculated by relative fungus and bacterium in cut. The result of chemical prevention tests was not very effective.