摘要
研究了不同株型油菜品种在6个种植密度下的产量表现,同时分析了冬前苗期性状与产量性状间的相关性。结果表明:传统松散型品种适于低密度栽培,产量峰值在15万株/hm^2;而紧凑型品种适于高密度栽培,产量峰值在60万~75万株/hm^2。典型相关分析结果显示:当冬前苗叶片数增加时,油菜的主花序产量和总生物学产量呈增加趋势;随着冬前苗叶干重和单株鲜重的增加,成熟期单株、分枝产量亦增加;冬前苗的叶片重合面积越大,单位面积产量和主花序产量越低。叶片数、根系重量、叶干重和叶片重合面积是影响油菜产量的重要指标。
A field experiment was conducted to investigate the effects of 6 planting densities on the yield of different planttype（ compact type and loose type） rapeseed（ Brassica napus L.） varieties,and to analyze the correlation between yield characters and before-winter seedling characters of rapeseed. The results showed that： the traditional loose-type rapeseed variety was suitable for low-density cultivation,and its yield peak appeared at the planting density of 150000 plant/hm^-2; while the compacttype rapeseed variety was suitable for high-density cultivation,and its yield peak appeared at the planting densities of 600000 -750000 plant/hm^-2. The canonical correlation analysis revealed that： the increase in leaf number of rapeseed seedlings before winter could cause the increase in main raceme yield and total biological yield; when the leaf dry weight and single-plant fresh weight of rapeseed seedlings before winter increased,the single-plant yield and branch yield of rapeseed at mature stage increased; the bigger the leaf doublication area of rapeseed seedlings before winter,the lower the per-unit-area yield and main raceme yield.Leaf number,root weight,leaf dry weight and leaf doublication area were the important indexes affecting the yield of rapeseed.
作者
王学芳
田建华
杨丽
韦世豪
关周博
WANG Xue-fang;TIAN Jian-hua;YANG Li;WEI Shi-hao;GUAN Zhou-bo(Hybrid Rapeseed Research Center of Shaanxi Province,Yangling 712100,China)
出处
《江西农业学报》
CAS
2018年第7期28-32,共5页
Acta Agriculturae Jiangxi
基金
陕西省重点研发计划项目(2017NY-022)
国家油菜现代产业体系建设专项(CARS-13)
关键词
甘蓝型油菜
种植密度
产量
苗期性状
典型相关
Brassica napus
Planting density
Yield
Seedling character
Canonical ton＇elation
