人们通常根据种子萌发对光的反应分为需光种子、忌光种子和中性种子。典型的需光种子有莴苣和烟草。其实,许多喜光先锋树种和杂草的细小种子萌发的需光要求是较为普遍存在的。光对某些林木种子的萌发也显示出良好的效果(198)。近几年来,作者也发现了一些需光性种子,如团花、八宝树、四薮木和榕树等(1-3)。我们研究种子萌发的需光特性和它的生态 People usually according to the seed germination response to light is divided into light seeds, light seeds and neutral seeds. Typical light seeds have lettuce and tobacco. In fact, many of the pioneering tree species and weeds need to light the germination of small seeds is more prevalent. Light also showed good effects on the germination of some tree seeds (198). In recent years, the authors have also discovered some seeds that require light, such as Tuanhua, Babao, Siyi and Banyan (1-3). We study the need for seed germination and its ecology