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在杂交水稻制种中,为了提高制种产量,已逐步完善了一套辅助措施。但在栽培上,如何促进制种产量的提高,却很少分析。笔者于1981～1983年,对7块产量为250～350斤的汕优6号制种田进行了516个穗的考察分析,以探讨穗型大小与制种产量的关系。结果是: 1.随着母本穗型的增大,每穗总粒数越多,则每穗实粒数越多,呈极显著正相关。 2.随着母本穗型的增大,异交结实率相应提高,呈极显著正相关。
In the hybrid rice seed production, in order to improve seed production, has gradually improved a set of ancillary measures. However, in cultivation, how to promote the improvement of seed production is seldom analyzed. In 1981 ~ 1983, the author conducted a survey of 516 spikes on 7 Shanyou 6 farming systems with yield of 250 ~ 350 kg to explore the relationship between panicle size and seed yield. The results are as follows: 1. With the increase of female genotypes, the more total grains per panicle, the more grains per panicle, the more significant positive correlation. With the increase of female parent panicle, the rate of outcrossing and fruiting increased correspondingly, showing a very significant positive correlation.