水稻考种计算总粒数是个耗时费事的烦杂工作。目前采用的方法多数是混合脱粒后,分开空秕粒、实粒,再分别数数的老办法。此法较麻烦,但准确可靠。另一种方法是称量法,于脱粒后,将空秕、实粒分开,分别称重。再随机取实粒和空秕粒数百粒,计数后称重,由此算出千粒重,由总重和各自的千粒重计算出总实粒和空秕数。这个方法虽较省时,但准确度较差,特 Rice test species to calculate the total grain number is a cumbersome and time-consuming work. At present, most of the methods used are mixed after threshing, the separation of empty tablets, real tablets, and then the number of old methods. This method is more troublesome, but accurate and reliable. Another method is weighing method, after threshing, the empty mound, real grain separately, were weighed. Random grains and empty grains were randomly selected and counted. After counting, the grains were weighed, and the thousand grain weight was calculated. The total grains and empty grains were calculated from the total weight and the respective thousand grain weight. Although this method is more time-saving, but the accuracy is poor, especially