水稻-油菜轮作不同施肥对油菜苗期生长的影响  

Effect of Different Fertilizations on Rape Seedling Growth in A Rice-Rape Rotation

作　　者：张立成[1] 杨敬林[2] 肖卫华[2] 贺文玉 倪伟俊 尹文艳 胡德勇[2] 

机构地区：[1]湖南农业大学资源与环境学院,湖南长沙410128 [2]湖南农业大学工学院,湖南长沙410128 [3]湖南农业大学继续教育学院,湖南长沙410128

出　　处：《土壤与作物》2017年第4期251-255,共5页Soils and Crops

基　　金：国家自然科学基金项目(31272248);国际科技合作项目(2013DFG91190)

摘　　要：采用大田和盆栽试验方法,选取肥力一般的水稻土进行油菜栽培,研究了水稻-油菜轮作下施用不同元素肥料对油菜苗期生长的影响。结果表明,单施N肥和综合施肥油菜苗期的根系和叶片的生长状况要优于单施P肥和单施K肥。单施肥处理的根冠比低于综合施肥和不施肥对照处理,单施P肥和K肥对油菜苗期根系生长影响较小,对叶片有一定的促长作用。油菜苗期植株中茎叶N、P、K含量高于根系,施用N肥和P肥油菜叶片中相应元素含量显著增高,而施用K肥可显著提高根系中钾素含量。Selecting a common paddy soil to plant rape in field and pot experiments,we studied the effect of different fertilizations on rape seedling growth in a rice-rape rotation. The results showed that the root and leaf growth with application of N or NPK treatment was better than those with application of P or K treatment,respectively. The root-shoot ratio with application of N,P,or K treatment was lower than those with application of NPK treatment or CK,respectively. The application of P or K would benefit to rape leaf growth rather than to rape root growth. As the treatment was with application of N,P,or K,the content of N,P or K in rape stem was higher than that in rape root,respectively. Application of N or P treatment significantly increased N or P content in rape leaf,while application of K treatment significantly increased K content in rape root,respectively.

关 键 词：作物轮作 土壤肥力 油菜 苗期生长 

分 类 号：S344.1[农业科学—作物栽培与耕作技术]