粒重是小麦产量构成的重要因素之一。在提高每亩穗数、每穗粒数的前提下,籽粒发育的好坏,粒重的高低,对提高产量具有重要作用。为了更好地研究小麦籽粒形成和灌浆过程的规律,了解籽粒发育各阶段的内在变化及相应的外部特征,掌握决定粒重的时期,以便采取有效措施在穗大粒多的基础上提高粒重,我们在我院实验农场,结合小麦不同时期肥水试 Grain weight is one of the important factors in wheat yield. In improving the number of spike per acre, grain number per spike, the development of grain quality, grain weight level, to improve the yield of an important role. In order to better study the rules of wheat grain formation and filling process, to understand the inherent changes in grain development stages and the corresponding external characteristics, to grasp the timing of grain weight in order to take effective measures to increase grain weight on the basis of large grain size, We are in our hospital experimental farm, combined with different periods of wheat fertilizer test