【摘要】 [目的]充分利用日本优质稻的性状,提高江汉平原优质稻的性状水平。[方法]通过对引自日本的11个优质粳稻品种进行小区栽培试验,初步研究了各品种的生态适应性。[结果]在2007年的试验中,1号和3号的生育期最短,为99 d;9号的生育期最长,为113 d;对照的生育期为122 d。在2008年的试验中,4号的生育期最短,为96 d;9号的生育期最长,为117 d;对照的生育期为149 d;6号的产量最高,为8 000.0 kg/hm~2,其实粒数为233粒/穗,千粒重为24.5 g;11号的产量最低,为4 833.3 kg/hm2,其实粒数为95粒/穗,千粒重为22.8 g;其他品种的产量在5 500.0～6 966.7 kg/hm~2,结实率在83.7%～96.9%;对照的产量仅为5 002.5 kg/hm~2。[结论]6号是引进品种中性状表现最好、最稳定的品种,其余品种可以作为遴选的后备种。更多还原

【Abstract】 [Objective]The aim of the study was to utilize the characteristics of high-quality Japanese rice sufficiently and enhance the characteristic level of high-quality rice in Jianghan plain.[Method]Eleven high-quality japonica varieties introduced from Japan were used in the plot cultivation experiment and their ecological adaptabilities were studied preliminarily.[Result]In the experiment carried out in 2007,the growth periods of No.1 and No.3 were shortest,being 99 d;that of No.9 was longest,being 113 d and that of CK was 122 d.In the experiment carried out in 2008,the growth period of No.4 was shortest,being 96 d;that of No.9 was longest,being 117 d and that of CK was 149 d;the yield of No.6 was highest,being 8 000.0 kg/hm~2,its full grains were 233 grains/panicle and its 1 000-seed weight was 24.5 g;the yield of No.11 was lowest,being 4 833.3 kg/hm~2,its full grains were 95 grains/panicle and its 1 000-seed weight was 22.8 g;the yields of the other varieties were between 5 500.0 and 6 966.7 kg/hm~2 and their fruiting rates were between 83.7%and 96.9%;the yield of CK was only 5 002.5 kg/hm~2. [Conclusion]Among introduced varieties,the characteristic performance of No.6 was best and most stable.The other varieties could be used as reserving varieties for tender selection.更多还原