不同杂交稻品种旱育超长龄秧苗的素质特征

为油菜/小麦-水稻两熟制稻区杂交稻长龄或超长龄秧的培育提供参考,以四川盆地近年推广的部分杂交稻品种进行田间试验,探究不同类型杂交稻品种在稀播旱育秧条件下的超长龄秧苗素质特征。结果表明:不同杂交稻品种超长龄秧苗素质特征存在较明显的差异,在播种规格6cm×6cm试验条件下,蓉18优188、蓉3优918和蓉优918等品种的苗高明显高于其他品种;川谷优3399、蓉优1808等品种秧苗单位茎鞘干物质发根能力和单株日均发根干重明显强(高)于其他品种;旌优127和Y两优973等品种秧苗分蘖能力和重高比明显高于其他品种。生产上可根据秧苗的素质特征制定育秧和管理措施。

Quality Characteristics of Dry-raised Super Long-age Seedlings of Different Hybrid Rice Varieties

In order to provide references for cultivation of long-age and super long-age hybrid rice seedlings in rape/wheat-rice double cropping area,some of the popular hybrid rice varieties in Sichuan Basin in recent years were used as materials in a field experiment,to explore the seedling quality characteristics of different hybrid rice in dry-raised super long-age seedling conditions.Results:There were obvious differences among the different varieties of seedling quality indexes.With the sowing specification 6 cm× 6 cm,the seeding height of Rong18you188,Rong3you918 and Rongyou918 were significantly higher than other varieties;The root shoot ratio and rooting ability of Chuanguyou3399 and Rongyou1808 were significantly higher than other varieties;Weight height ratio and tillering ability of Jingyou127 and Yliangyou973 were significantly higher than other varieties.Management measures could be formulated according to the characteristics of seedlings in practical production.