凉山州地方粳稻品种性状研究

本文通过对部分凉山州地方粳稻品种的生育进程、分蘖成穗情况、株叶特性和抗性、穗部性状及物理品质的研究表明，各品种的生育期均短于对照，单株分蘖力大多高于对照而成穗率大多低于对照，株高偏高，抗倒伏力弱而抗病力强，株型和剑叶性状较好，穗部性状各品种间差异较大，产量和收获指数均不及对照，稻米的物理品质除个别品种的糙米率、整精米率、垩白粒率达粳稻米二级指标外，其它均较差。综合各个品种的农艺性状及物理品质，以Y63、Y64、X32、B95和B134较好，可作为育种材料或经过改良在适宜地区推广种植。

Study on the Characters of Local Japonica Rice Variety in Liangshan

The growing process,formation of spike from the tillers,characteristics of plant type,resistance,ear characters and physical quality of some local Japonica rice variety in Liangshan were studied.The result indicated that,for all local Japonica rice variety in Liangshan of this experiment,the growing process was shorter than that in control,tillering ability of per plant was mostly higher than that in control but its formation of spike from the tillers was mostly lower than that in control,the plant height w...