论文部分内容阅读
在福州平原麦区,影响稻桩上赤霉菌子囊壳形成的关键因子是湿度;冬、春10℃以下的低温是阻碍子囊孢子发育的主要因子,小麦花期(2月/下旬～3月/上旬)相对湿度达80%以上时,发病重;相对湿度在70%以下时,发病轻。无论子囊孢子或是分生孢子,均以在小麦花期最易侵入,抽穗期次之,至灌浆期病菌的侵染力则显著减弱。接种于土中的赤霉菌在当地不能越夏,也不能侵染早稻桩和晚稻苗。
In Fuzhou plain wheat area, the key factor affecting the formation of scab mold shell was moisture. The low temperature below 10 ℃ in winter and spring was the main factor that hindered the development of ascospore. Wheat flowering (February / late ~ March / early) Relative humidity of 80% or more, the incidence of severe; relative humidity below 70%, the incidence of light. Regardless of ascospores or conidia, both in the flowering of wheat is most likely to invade, heading second, to filling the pathogen’s infection was significantly weakened. Gibberella inoculated in the soil can not be more in the summer, it can not infect early rice piles and late rice seedlings.