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收割谷物最适当的时间,是目前世界农业科学上争论较多的问题。现在我把1954—1958年五年来试验在不同时间收割的小麦植株的外部生物形态和籽粒的化学成分测定结果列举如下。 根据小麦成熟过程的生物形态变化大致分为以下四期:
The most appropriate time for harvesting grain is currently a controversial issue in world agricultural science. Now I list the results of the chemical composition determination of the external biological forms and the grains of the wheat plants harvested at different times during the five years between 1954 and 1958. According to the biological morphology of wheat maturation process can be divided into the following four phases: