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日光对种子发芽的影响的研究,自1860年以来,不论在理论上或农林业生产实践上都有很大的发展。据近来苏联和国内资料,日晒小麦种子,对小麦的发芽和幼苗生长有良好的影响。过去Stebler的研究,Poa nemoralis照以日光,发芽率提高到62％。有些种子经过日晒,就会大大地降低发芽力。据Kinzel的研究,认为日光中屈折力大的绿、青、紫光对一些种子有害。如黑种草(Nigella sativa)种子,仅日晒三分钟,发芽率就显著降低。日晒种子在农业上研究较广,在林木种子方面的研究则较少。据近藤万太郎的研究,日晒对林木种子Alnus(赤杨属)、
The study of the effect of sunlight on seed germination has been greatly developed since 1860, both in theory and in agricultural and forestry production practices. According to the recent Soviet Union and domestic data, sun-dried wheat seeds have a good effect on the germination and seedling growth of wheat. Past Stebler’s study, Poa nemoralis according to the sun, the germination rate increased to 62%. Some seeds after the sun, will greatly reduce the germination force. According to Kinzel’s research, the green, blue, and violet lights that are refractory to sunlight are considered harmful to some seeds. Such as black grass (Nigella sativa) seeds, the sun only three minutes, the germination rate was significantly reduced. Sun-dried seeds are widely studied in agriculture and less in tree seeds. According to Kondo Wan Taro’s research, the sun is on the tree seed Alnus (Alnus),