论文部分内容阅读
穗粒重,是小麦经济产量的组成部分。在高额丰产田,粒重对产量的作用尤为重要。要提高穗粒重,首先要了解籽粒发育各阶段的内部变化与相应的外部特征,掌握决定粒重的决定时期,采用有效措施提高粒重。在小麦抽穗始期,将健壮而同期抽穗的单株主穗进行标记。于小麦开花后,定期取样,每次取标记穗10穗,每穗取穗中部的5个小穗,每小穗的第一、二、三、四籽粒各用1/中、
Ear grain weight, is an integral part of the economic output of wheat. In high-yield fields, grain weight is particularly important for yield. To improve grain weight, we must first understand the internal changes of each stage of grain development and the corresponding external characteristics, determine the decision to determine the timing of grain weight, using effective measures to improve grain weight. At the earliest heading stage of wheat, the main ear of a single, robust, synchronized heading was flagged. After the flowering of wheat, the samples were taken periodically, and the ear was spiked at 10 spikes for each spike. Five spikelets were taken from the middle of each ear, and the first, second, third,