进行种群密度的取样调查时应该采用的做法是 A选取多种植物为调查对象 b随机选取大小相等的若干块方形地块为样方 c计算各样方内的平均值 d Template




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tomski进行种群密度的取样调查时应该采用的做法是 a选取多种植物为调查对象 b随机选取大小相等的若干块方形地块为样方 coloring