超级稻Y两优1号不同密度栽培试验

An experiment of different planting densities in super rice Y Liangyou1 cultivation

为寻求Y两优1号在钦州市适宜的插秧群体密度,进一步挖掘合理群体的增产潜力,开展Y两优1号适宜插秧群体的试验研究,在6种栽培密度下研究Y两优1号产量及经济性状的变化。结果表明,在1.2万穴/667m2至1.8万穴/667m2之间,产量随着插植密度的增加而增加;在2.1万穴/667m2至2.7万穴/667m2之间时,产量则随着密度的增加而减产。各密度之间生育期无差异。研究表明,超级稻Y两优1号在钦州市中上等肥力田获得高产的最佳栽培密度为1.8万穴/667m2。

In order to choose suitable seedling planting density of Y Liangyoul in Qinzhou, further pro- mote the yield potential of this variety, a different planting densities experiment was conducted to study the variety＇s changes of yield and economic characteristics. The results show that between 12000 to 18000 seedling holes/667m2, the yield will be increasing along with the increase of planting density; meanwhile, between 21000 to 27000 seedling holes/667m2, the yield will be decreasing along with the increase of planting density. There is no difference in growth period between different planting densi- ties. The research also represents that the best planting density of 18000 seedling holes/667m2 for this variety can obtain high-yield in middle-upper-level fertility paddy-field of Qinzhou District.