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水稻单位面积产量的高低决定于有效穗数、平均每穗粒数、千粒重和空壳率,穗多、粒多、粒重、空壳少则产量高,反之则低。近年来水稻育种工作曾以千粒穗(粒多)万粒斤(粒重)为选育目标。本所过去也曾选出一些粒数较多、粒重较高的材料。这些材料在抽穗后多被选中,但最后往往因产量不高,甚或减产而被淘汰,所以有些群众给这类大穗品种取名为“参观稻”。因此如何正佣地理解这几个产量性状与产量的关系是一个值得研究的问题。
Yield per unit area of rice is determined by the number of effective panicles, the average number of grains per spike, 1000-grain weight and shell percentage, spike and more, more grain, grain weight, shell, then the high yield, and vice versa. In recent years, rice breeding work once thousand spike (grain more) ten thousand pounds (grain weight) for breeding objectives. In the past, the firm also selected some of the more grain and heavier grain materials. These materials were selected after heading, but in the end they were often eliminated due to low output or even reduced production. Therefore, some people named such big-ear varieties “visiting rice”. Therefore, how to understand the relationship between yield traits and yield is a problem worth studying.