^pof;
MathematicsHarbin;
Institute;
of;
Technology;
(Weihai);
Weihai,;
264209,;
P.;
R.;
China;
^pof;
Mathematics;
and;
Statistics;
Northeast;
Normal;
University;
Changchun,;
130024,;
P.;
R.;
China;
两种群; 动力学性质; 竞争模型; 随机; 正解的存在性; 充分条件; 全局吸引; 竞争力;