Department of Plant Protection;
College of Agriculture;
Northeast Agricultural University;
Harbin 150030;
China;
Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences;
Jiamusi 154007;
Heilongjiang;
China;
Heilongjiang Academy of Agricultural Sciences;
Harbin 150086;
China;
Phytophthora sojae; pathotype composition; genetic structure; crop rotation; amplified fragment length polymorphism(AFLP);