了解向日葵生长发育特性及进程,对于育种和制定栽培技术都有应用价值。前人对于向日葵的生育特性早有研究和报道,唯感不够系统和丰富,有的是引用国外资料而与本地实际观察结果有出入,难以应用。因此我们于1983—1984年进行了此项研究,现将初步资料介绍如下,供商榷。 研究内容包括:向日葵苗期根系生长;成长中植株生育动态;开花结实习性;子实中油分的积累。 Understanding sunflower growth and development characteristics and process, for breeding and development of cultivation techniques have application value. Previous studies on the reproductive characteristics of sunflower have been reported and reported, the feeling is not systematic enough and rich, some reference to foreign information and local actual observations are different, difficult to apply. Therefore, we conducted this study in 1983-1984. We will introduce the preliminary information as follows for discussion. The research contents include: sunflower seedling root growth; growing plant growth dynamics; flowering and seed set habitat; seed oil accumulation.