摘要
对玉米灰斑病在黑龙江省的发生情况进行了调查。结果表明：在2005～2007年调查的玉米品种中未发现对灰斑病免疫的品种;三个年度绝大多数品种的发病率都是100%,无年度差异;三年间病情指数大多数集中在10%～30%,属轻度发生,年度间差异不明显。
The investigation was done about incidence of gray leaf spot of maize in Heilongjiang province. The results showed that immune maize variety was not been found in 2005,2006 and 2007 the incidences of vast majority maize varieties were 100%, there was no difference in three years; the disease index was mostly in 10% ～30% in three years.
出处
《黑龙江农业科学》
2008年第5期72-74,共3页
Heilongjiang Agricultural Sciences
关键词
玉米灰斑病
发病率
病情指数
gray leaf spot of maize
incidence
disease index
