引言谷物播种量的研究由来已久。1928年,Engledow曾用抛物线来表示单位面积的植株数和小麦产量之间的函数关系;存播种量为127公斤/公顷时产量最高。过去的十年里发表丁许多有关播种量的论文,其中绝大多数的试验工作是在大田中进行的,有些是在盆钵,或在微小区中进行的。许 Introduction The study of seeding volume has been taking a long time. In 1928, Engledow used a parabola to represent the functional relationship between the number of plants per unit area and the yield of wheat; the highest yield was found at 127 kg / ha. In the past decade, many papers on seeding rates have been published, the vast majority of which are carried out in the fields, some in pots or in microclots. Xu