油菜“庆油3号”超稀植高产栽培研究  

Study of Super-sparse Planting of Rapeseed cv. “Qingyou 3” for Its High-Yield Cultivation

作　　者：朱程 黄桃翠[1] 李尚 胡承伟 刘希忠 ZHU Cheng;HUANG Tao-cui;LI Shang;HU Cheng-wei;LIU Xi-Zhong(Chongqing Academy of Agricultural Sciences,Chongqing 400039,China;Chongqing Agricultural Mechanization Technology Extension Station,Chongqing 400020,China)

机构地区：[1]重庆市农业科学院,重庆400039 [2]重庆市农业机械化技术推广总站,重庆400020

出　　处：《西南大学学报（自然科学版）》2020年第4期38-42,共5页Journal of Southwest University(Natural Science Edition)

基　　金：国家重点研发计划项目(2018YFD0100500);重庆市农业科学院青年创新团队项目(NKY-2018CQ01);重庆市农业科学院农业发展资金项目(NKY-2019AB018).

摘　　要：采用裂区试验设计,研究了栽培密度和肥料运筹对杂交油菜新品种"庆油3号"产量和经济效益的影响.结果表明:1)超稀植油菜增产主要依靠全株有效角果数和二次分枝数,其次是每角果粒数. 2)栽培密度是决定油菜超稀植栽培产量的最大因素,施肥量次之. 3)"庆油3号"每667 m^2栽1 200株、施50 kg复合肥的栽培方式纯利润最高,达到每667 m^2为361.0元,比对照常规栽培方式每667 m^2纯利润提高290.3元,其产量达到178.3 kg.A split-plot experiment was conducted to study the effects of planting density and fertilizer management on the yield and economic benefits of the new rapeseed cultivar "Qingyou 3". The results indicated that yield improvement in super-sparse planting of "Qingyou 3" was mainly owing to greater number of effective siliques and secondary branches, and seed number per silique as well;that planting density had the greatest effect on rapeseed yield in super-sparse cultivation, followed closely by fertilization rate;and that cultivation of "Qingyou 3" with 1 200 plants/mu(15 mu=1 ha) + compound fertilizer 50 kg/mu gave a net profit of 361.0 yuan RMB/mu, or 290.3 yuan RMB/mu higher than that in conventional cultivation, its yield being 178.3 kg/mu.

关 键 词：庆油3号 超稀植 高产 纯利润 

分 类 号：S514[农业科学—作物学]