据说在很早以前,古人繁殖果树,头一年从树上采下种子,在家里放了一冬,到第二年开春播种下去,心想和禾本科作物一样,很快就可以长出茁壮整齐的苗子来。然而令人失望,得到的结果恰恰相反,出苗稀稀拉拉,有的甚至一苗未出。后来,人们经过反复实践,才揭开了这个谜。原来果树种子,通常是要经过一段低温,完成休眠和后熟阶段才能萌发。 It is said that a long time ago, the ancients had propagated the fruit trees, plucked the seeds from the trees for the first year and put them in their houses for a winter. By the following year, they planted them in the spring and thought that they would grow well soon, just like grass crops Tidy seedlings come. However, disappointing, the result is exactly the opposite, sparsely popped, and some even a seedling not out. Later, after repeated practice, people opened the mystery. The original fruit tree seeds, usually after a period of low temperature, to complete the dormant and ripe stage to germination.