机插密度对陵两优102群体结构及产量的影响

Effects of Machine-transplanted Density on Population Structure and Yield of Lingliangyou102

采用田间对比试验,研究不同机插密度对陵两优102群体结构和产量的影响。结果表明:不同机插密度对双季早稻陵两优102的分蘖消长、生长发育、穗粒结构和产量均有影响。在该试验条件下,陵两优102机插株行距宜选择10 cm×25 cm的规格,实插2.55万蔸/667m^2左右,每蔸插2~3苗,如此构建的群体结构较合理,单产较高,可达517.8 kg/667m^2。

The effects of different machine-transplanted density on population structure and yield of Lingliangyou102was studied by fieldcomparison experiment.The results indicated that different machine-transplanted density have influence on tiller,grow,efficient spike and yieldof double cropping rice.Under the experimental conditions,machine transplanting spacing should be10cm×25cm,the machine-transplanted density of382500clump/hm2,2-3seedling per clump is suitable,with reasonable population structure and higher yield,7767kg/hm2.