不同叶龄移栽对优质杂交水稻泰优808产量性状的影响

Effects of Transplanting at Different Leaf Ages on Yield Characters of High-quality Hybrid Rice Taiyou 808

以泰优808为材料,研究不同叶龄移栽对产量和性状的影响。结果表明,3叶龄移栽的有效穗数、穗实粒数、结实率均最高,分别为17.29万穗/667 m^(2)、175.13粒和78.90%;3叶龄移栽的产量最高,为819.3 kg/667 m^(2),分别比5、6叶龄移栽增产26.58%和32.74%,差异均达极显著水平。叶龄对株高、穗长和千粒重影响不显著。移栽叶龄增大导致生育期推迟及茎蘖数减少。产量与有效穗数呈极显著正相关,与每穗粒数、每穗实粒数和结实率呈显著正相关。因此,优质杂交水稻泰优808以3叶龄移栽最佳。

Taking Taiyou 808 as the material,the effects of different leaf age transplanting on yield and characters were studied.The results showed that,the number of effective panicles,the number of filled grains per panicle and the rate of seed setting were the highest at the age of 3 leaves,which were 172900/667 m^(2),175.13 grains and 78.90%respectively.The yield of transplanting at the age of 3 leaves was the highest,819.3 kg/667 m^(2),which was 26.58%and 32.74%higher than that of transplanting at the age of 5 and 6 leaves.Leaf age had no obvious effect on plant height,ear length and 1000-grain weight.The transplanting leaves were older and the growth period.The number of tillers decreases with the age of transplanted leaves.The yield was significantly and extremely significantly positively correlated with the number of filled grains per spike,seed setting rate and effective panicles,There was no significant correlation between yield and plant height,ear length and 1000-grain weight.Therefore,transplanting high-quality hybrid rice Taiyou 808 at the age of 3 leaves was the best.