乙酸处理减少根系活跃吸收面积，柠檬酸能明显提高根系活力。
Acetic acid could reduce active absorbing area of roots while citric acid could increase roots activity.
进而导致比叶面积，比同化枝长度，光吸收面积和光利用效率增加。
The results indicated that low-light conditions limited the normal growth of A. sparsifolia.
根据方差分析，高梁苗数、根数、苗长、根长、苗鲜重、根活跃吸收面积等相关性较好。
According to analysis of variance, the number of sorghum seedlings, root number, seedling length, root length, seedling fresh weight, root active absorption area, such as the relevance of better.
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