垄作摆栽油菜适宜密度研究  

Suitable density of rapeseed transplanted on ridge

作　　者：葛家颖[1] 晋晨[2] 朱庆洋 查霆 刘浩[2] 李佳诚 杨光[2] 冷锁虎[2] 

机构地区：[1]溧阳市农林局,江苏常州213300 [2]扬州大学江苏省作物遗传生理重点实验室,江苏扬州225009

出　　处：《广东农业科学》2015年第18期32-36,共5页Guangdong Agricultural Sciences

基　　金：江苏高校优势学科建设工程项目(PAPD);江苏省农机三新工程项目(NJ2015-26;NJ2014-28);江苏省农业三新工程项目(SXGC[2014]301;SXGC[2013]111)

摘　　要：以杂交油菜宁杂1818为材料,设置垄作摆栽油菜不同密度处理,研究不同处理对植株农艺性状、冠层结构、各时期干物质积累量和籽粒产量及其构成因素的影响。结果表明,密度为10.5万株/hm2时产量最高,达4 196.9 kg/hm2。经统计分析,籽粒产量与密度间呈二次曲线关系,可求出最适密度为10.17万株/hm2,适宜密度范围为9.50万~10.84万株/hm2。在适宜密度条件下,油菜单株生长量适中,结角层结构合理,各产量构成因素较协调,群体角果数虽略少于密度为12万株/hm2的处理但显著高于7.5万株/hm2和9万株/hm2的处理,而千粒重、群体总粒数和花后干物质积累量分别高于其他3个处理。In this experiment,Taking Ningza 1818（Brassica napus L.）as materials, different densities of transplanting on ridge were set up to study the effects of different densities on the agronomic characters of plant,pod canopy structure,the amount of dry matter accumulation of each period,seed yield and its component factors. The results showed that,the treatment of 105 thousand plants per hectare had the highest yield with 4 196.9 kg/hm2. Through statistical analysis,there was a quadratic curve relationship between seed yield and density. According to the regression equation,we figured out the suitable density,which was 101.7 thousand plants per hectare,and the most suitable density range was 95-108.4 thousand plants per hectare. Under the suitable density,rapeseed had a suitable amount of growth and a reasonable pod canopy structure,besides,the yield component factors coordinated. The number of population pods in the suitable density was slightly less than that of 120 thousand plants per hectare,but significantly more than that of 75 thousand plants and 90 thousand plants per hectare. 1000-seed weight,total seed number,and the amount of dry matter accumulation after flowering under the suitable density were higher than those of other treatments.

关 键 词：油菜 垄作摆栽 密度 产量 

分 类 号：S565.4[农业科学—作物学]