黑龙江大豆灰斑病流行速度研究

Study on Rate of Epidemies of Grey Speck of Soybean in Heilongjiang Province

研究表明,大豆灰斑病的病叶和病荚是次年灰斑病的初次侵染源。灰斑病叶的病情田间动态分布呈“S”型,病情的流行速度可用K.O.Mller模型预测。

The infected leaf and pod of soybean by cercospora sojina is the initial infective source of grey speck of soybean in Heilongjiang province. The movement of disease index of infected leaf of soybean in filed expressive “s” form, and the rate of epidemics of disease index can forecasting by k.o.mueiller model.