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杨树因其繁殖容易、速生丰产、经济效益高而成为道路绿化的主要树种。由于杨树腐烂病的不断出现,在一定程度上阻碍了杨树人工林的发展,也直接对六大造林工程构成威胁。近年来,通过对山西省岢岚县境内的杨树腐烂病进行的调查,现将结果总结如下:一、病理特征1.发病规律:杨树腐烂病多发生于杨树人工林,当树木生长衰弱时,在寒冷、风、水、虫、日灼及人为等因素作用下,易滋生腐烂病。腐烂病在一年中有两次发病高峰,一次在春季,一次在秋季。
Poplar trees become the main tree species for road greening due to their easy multiplication, fast-growing and high-yielding, and high economic benefits. As poplar decay appears constantly, to a certain extent impede the development of poplar plantations, but also directly pose a threat to the six afforestation projects. In recent years, through the investigation of poplar rot in Shanxi Lanxian County, the results are summarized as follows: I. Pathological Features 1. Incidence: Poplar rot occurs in poplar plantations, when the trees grow When weak, in the cold, wind, water, insects, sunburn and artificial factors, easy to breed rotten disease. Rot disease occurs twice a year in peak incidence, once in the spring and once in the fall.