【摘 要】
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春天到了,休眠了一冬天的树木开始发芽。大多数树木的芽首先发育成枝叶,然后开花,可是桃树、杏树等却是先开花后长叶,这是怎么回事呢? 原来,树木的芽分为叶芽、花芽、混合芽
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春天到了,休眠了一冬天的树木开始发芽。大多数树木的芽首先发育成枝叶,然后开花,可是桃树、杏树等却是先开花后长叶,这是怎么回事呢? 原来,树木的芽分为叶芽、花芽、混合芽三种。叶芽只能发育成枝叶;花芽只能发育成花或花序;混合芽既能发育成枝叶,又能发育成花。不同的树木,发芽的时间不同,不同的
When spring comes, trees that have been dormant for a winter start to germinate. Most of the trees in the first development of the bud into the branches and leaves, and then flowering, but peach, apricot, but it is the first flowering after the long leaves, what is going on? The original, the tree buds are divided into leaf buds, flower buds, mixed buds three . Leaf buds can only develop into branches and leaves; flower buds can only develop into flowers or inflorescences; mixed buds can develop into branches and leaves, but also develop into flowers. Different trees, different germination time, different
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