测定玉米穗粒数的新方法

• 作 者: 赵久然 陈国平
• 机 构: 北京市农林科学院作物所,
• 出 处: 农业科技通讯
• 发表日期: 1987年08期
• 关键词: 玉米穗 每穗粒数 考种 穗粒重 平均穗粒数 实粒数 大偏差 百分误差 充分干燥 试验结果

玉米穗粒数的测定是玉米考种工作中的一个重要项目。目前通常采用的方法是取10-20个果穗为一个样本,每个果穗的粒数用行数乘以有代表性的一行粒数求得,再将同一样本中所有果穗穗粒数平均而得之。这种方法的工作量较大,并且在果穗着粒不规整的情况下应用,所得结果会有较大偏差。因此,有必要探索更简便、更准确的测定方法。从理论上说,可以通过三种途径获得穗粒数:其一就是前面提到的方法;

The determination of the number of kernels of corn is one of the important items in the examination of corn. At present, the commonly used method is to take 10-20 ears as a sample, the number of each ear is multiplied by the number of rows by a representative of the number of rows obtained, and then the same sample in all the average number of ears per spike It The workload of this method is large, and in the case of ear grain irregular application, the results will be a greater deviation. Therefore, it is necessary to explore more simple and accurate determination method. In theory, there are three ways to get the number of grains per spike: one is the previously mentioned method;