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前言杉木种子涩籽是指胚败育,丧失发芽力的纯净种子。它占纯净种子的百分数,称为涩籽率。据初步调查,种子园涩籽率在30%以上,低山林分约50%,高山林分高达60—70%。涩籽率高,是杉木种子芽率低的主要原因。查明涩籽成因,研究降低涩籽率的有效措施,对于杉木种子经营有着重大的经济意义。近几年来,南京林产工业学院植物教研组等若干单位,对此问题都进行了研究,有的认为花芽分化时迂到干旱天气,次年种子涩籽率就高;有的认
Foreword Chinese fir seed Astringent seed refers to embryo abortion, the loss of germination of pure seeds. It accounts for the percentage of pure seeds, called astringent seed rate. According to a preliminary investigation, astringent seed seed orchard rate of 30% or more, about 50% of low mountain forests, alpine forests up to 60-70%. Shibuya high rate of seedling is the main reason for seedling rate is low. Identifying the causes of astringent seeds and studying the effective measures to reduce the astringent seed rate have great economic significance for the management of Chinese fir seeds. In recent years, Nanjing Institute of Plant Technology, Forest Research Institute and a number of other units on this issue have been studied, and some think that when the flower bud differentiation dry weather, the following year seed astringent seed rate is high; some recognize