樟子松枯梢病危险等级的划分
JOURNAL OF NORTHEAST FORESTRY UNIVERSITY(2004)
Abstract
根据黑龙江省22个市县病害调查的结果,选择与病害密切相关的9项气象因子为指标进行聚类分析,将黑龙江省樟子松枯梢病危险等级划分为重发区、常发区、偶发区和安全区4级.经证实,等级的划分与病害调查的实际情况基本一致.
MoreKey words
bioinformatics,biomedical research
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