20.“枝繁叶茂 是作物丰产的前提的原因是 �可以增大单位空间内叶的总面积�植物最大限度的接受阳光照射�提高光合作用的效率�能够使气孔尽 Template




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tomski20.“枝繁叶茂 是作物丰产的前提的原因是 �可以增大单位空间内叶的总面积�植物最大限度的接受阳光照射�提高光合作用的效率�能够使气孔尽 coloring