各地生产实践表明,小麦由低产变中产的主要途径是增加有效穗数,由中产变高产和高产更高产则依靠增加穗粒数和提高千粒重.科学研究也证明,穗数是在小麦开花结束时才最后定局的,千粒重则直接受花期的影响.因此,研究小麦的开花特点及其与穗粒数、千粒重的关系,对于制定春小麦高产栽培措施有着重要的意义.现将过去几年有关这方面的研究整理如下. Practice shows that the main production of wheat from low to medium production is the main way to increase the effective panicles, from middle to high-yielding and high-yielding more yield by increasing grain number per spike and increase 1000-grain weight. Scientific research also shows that the spike is at the end of the flowering of wheat Only the final set, the 1000-grain weight is directly affected by flowering.Therefore, the study of flowering characteristics of wheat and its grain number and 1000-grain weight relationship for the development of high-yielding spring wheat cultivation measures is now the past few years in this regard The research is organized as follows.