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为达到棉的春化目的,必须使棉籽能受到下列各种外界条件的影响:湿度、温度、适当的空气的供给,防止棉籽内水分的过度蒸发,使棉籽不与日光接触(尤其对于春化埃及棉时更为重要)。先把棉籽浸湿在水中:每一百份(重量)种子,加水五十二至五十七份。水的温度为摄氏二十度。浸水四次,时间共为三十六小时。浸种后应立刻把潮湿的种子铺平(厚度三十——五十公分),并且予以适当的遮盖。种子层内的温度,须保持摄氏二十五度——三十度,才能达到春化的目的。最好是使种子的胚芽刚开始萌发,而还没有突出种皮的程度。应当
In order to achieve the vernalization of cotton, it is essential that cottonseeds be subjected to the following external conditions: humidity, temperature, supply of appropriate air, prevention of excessive evaporation of moisture from the cottonseed so that cottonseeds do not come into contact with sunlight (especially for vernalization Egypt is more important when cotton). Wet cottonseed in water first: Fifty-two to fifty-seven per hundred parts by weight of seeds. Water temperature is twenty degrees Celsius. Four times soaking time for a total of thirty-six hours. Immediately after soaking, moist seeds should be flattened (thirty to fifty centimeters thick) and properly covered. Seed layer temperature, to maintain twenty-five degrees Celsius - thirty degrees, in order to achieve the purpose of vernalization. It is best to germinate the germination of the seed just started, but not the degree of prominence of the seed coat. should