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近年来,水稻品种的提纯复壮工作已被广大科技工作者所重视。但目前所采用的穗行圃的播前准备和播种等工作,不但劳动强度大,费工,而且很易发生互混,不易准确选择,对提高和保持良种的种性影响很大,结果是增产幅度不明显,显示不出提纯复壮的效果。所以前些年我们费劲不小,收效却不够显著,拿不出纯度高的种子来。我场每年都要负责3～4个水稻品种6000～8000个单穗的提纯复壮工作。多年来,我们沿用的穗行圃的播法是将这些单穗,一穗一穗的用手搓下,除去空秕、劣粒,装入纸袋,然后稀播于苗床上,覆土盖膜等。尽管参加此项工作的同志再细
In recent years, the purification and rejuvenation of rice varieties have been valued by the majority of scientific and technological workers. However, the pre-sowing preparation and sowing work of the currently used spike nursery not only has great labor intensity and labor costs, but also is prone to intermix with each other and is not easy to be accurately selected. Therefore, it has a great impact on raising and maintaining the species of the elite. As a result, Yield increase is not obvious, showing no effect of purification and rejuvenation. Therefore, in previous years, we worked hard and did not achieve remarkable results. We can not get seeds of high purity. My field every year to be responsible for 3 to 4 rice varieties 6,000 to 8,000 single spike purification and rejuvenation work. For many years, the sowing law of the spikes and nurseries we used was to rub these single spikes and spikes of a spike by hand to remove empty noodles, noxious grains, and put them in paper bags, then thinly sown on seedbed and covered with mulch . Although the comrades to participate in this work to fine