移栽叶龄与密度对Ⅱ优航2号产量的影响

Effect of Transplanting Leaf Age and Transplanting Density on the yield of Ⅱyouhang 2

以超级稻Ⅱ优航2号为材料,在12.0 kg/667m2的氮肥供应水平下,研究了中稻不同叶龄移栽和不同种植密度条件对产量的影响。结果表明,不同叶龄和不同密度处理下Ⅱ优航2号生育期幅度在122.0~125.3 d,以5月上、中旬适时早播早插,5~6.5叶龄移栽,密植规格23.3 cm×23.3 cm,能较好兼顾群体与个体,较易获得高产。

In this paper, the middle rice combination, Ⅱ youhang 2, was as research material. We studied the yield effect of middle rice combination in different transplanting leaf age and transplanting density. The result showed the growth period ofⅡ youhang 2 was between 122.0 d and 125.3 d in different transplanting leaf age and transplanting density, which would balance individuals and groups, and easily gain high yield.