论文部分内容阅读
一、水稻提纯复壮效果和原种利用世代我场水稻原种生产是与新品种引进推广同时进行的。回顾20多年的工作,我们有以下体会:(1)在品种多,种子杂的情况下,提纯复壮效果显著。(2)一个品种随着提纯复壮的年代增多,不同世代之间的产量差异逐渐缩小。(3)一个品种的同一世代的种子,不同年分产量不同。分析其原因,可能是一个品种经过连续提纯以后,原种和原种后代种子纯度高了,质量好了。而一个已经提纯复壮多年的水稻品种,继续生产原种,也难使产量
First, the purification and rejuvenation effect of rice and the use of original species My field of rice seed production is introduced at the same time with the introduction of new varieties. Recalling the work of more than 20 years, we have the following experience: (1) in the case of more varieties, the seeds of hybrid, purification and rejuvenation effect is significant. (2) With an increase in the age of purifying and rejuvenating a variety, the yield differences between generations gradually narrowed. (3) the same generation of seeds of a variety, different yield in different years. Analysis of the reasons may be a species after continuous purification, the purity of the seeds of the original species and progeny seeds, good quality. And one has been refined and rejuvenated rice varieties for many years, continue to produce the original species, it is difficult to yield