进行种群密度的取样调查时宜采用的做法是 A选取多种植物为调查对象b样方数目越多越好c对某种植物的调查常采用标记重捕法d样方内各 Template




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tomski进行种群密度的取样调查时宜采用的做法是 a选取多种植物为调查对象b样方数目越多越好c对某种植物的调查常采用标记重捕法d样方内各 coloring