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早苗全苗,是上海郊区棉花“壮苗早发”的重要条件。它直接影响着苗期的长势,关系到棉花高产的全局。因此,认识棉花发芽、出苗和幼苗期的特点,改善其生长发育条件,争取早苗全苗十分重要。一、认识三个问题(一)、棉籽的生命力:棉花种籽在低温干燥的环境中,发芽力可以保持十年以上。据本院作物所试验,将充分晒干的成熟棉籽,
Sanmiao seedlings, Shanghai suburbs cotton “strong seedlings early” an important condition. It directly affects the growth of the seedling stage, relates to the overall high yield of cotton. Therefore, it is very important to recognize the characteristics of cotton germination, emergence and seedling stage, improve its growth and development conditions and strive for the full seedling of early seedling and seedling. First, to recognize three issues (A), the vitality of cottonseed: Cotton seed germination in a low-temperature dry environment, can maintain more than a decade. According to the Institute of crop experiments, the fully dried mature cottonseed,