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由Glomerella cingulata引起的杉木炭疽病在江西省丘陵地区广泛流行。病害在4月上旬开始发生,4月下旬至5月下旬,当旬平均气温上升至20—25℃时,病害迅速发展达到高峰。6月下旬以后基本上停止发展。秋季,只有患生理性黄化病的杉木才会发病。降雨和大气湿度对病害的流行无显著影响。病菌在培养中生长最适温度为20—24℃,分生孢子萌发最适温度相同。分生孢子液无伤喷洒接种试验中潜育期8—17天,光照不足增加侵染率和严重程度。调查表明病害在丘陵地区广泛流行。立地条件不适合杉木生长的要求可能是病害流行的主要因素,因为在杉木的原产地,这种病害并不重要。
Fir anthracnose caused by Glomerella cingulata is widespread in hilly areas of Jiangxi Province. Disease began in early April, late April to late May, when the average temperature rose to 20-25 ℃, the rapid development of disease reached its peak. Basically stopped development after late June. In autumn, only Chinese fir with physiological yellowing disease will develop. Rainfall and atmospheric humidity had no significant effect on the prevalence of the disease. Germs in the growth of the optimum temperature for the cultivation of 20-24 ℃, con germination optimum temperature for the same. Conidiophore spray injury-free vaccination test incubation period of 8-17 days, insufficient light to increase the infection rate and severity. Surveys show that the disease is widespread in the hilly areas. The requirement that site conditions are not suitable for fir growth may be a major factor in the prevalence of the disease because the disease is not important in the origin of fir.