干旱地区农业研究2012，Vol.35Issue(5)：46-50,5.
北方旱寒区冬油菜种植密度对生态条件的响应
Response of planting density of winter rapeseed to different ecological condition in north drought and cold region
摘要
Abstract
The suitable planting density of winter rapeseed was studied in north drought and cold region. The effect of planting density on winter-survival rate,growth period,yield,and agriculture character were discussed. The results showed that the winter-survival rate was decreased with the increase of planting density. The planting densities also had some effect on the growth period. As the planting density increased,the location of the branch raised,but the plant height,total branches,length of main inflorescence,1000-seed weight and yield per plant all declined. Seeds per silique showed a parabolic curve with increase of planting density. The suitable planting density in Xinjiang,Jiuquan,Jingyuan and Beijing was 6 × 105 ~ 1 .2 × 106 plants/hm2 ,6 × 105 ~ 7 .5 × 105 plants/hm2 ,6 × 105 ~ 9 × 105 plants/hm2 and 6 × 105 ~ 9×10 plants/hm ,respectively. In conclusion,the suitable planting density in north drought and cold region was 6 ×105 ~ 9×105 plants/hm2 .关键词
冬油菜/适宜种植密度/北方旱寒区Key words
winter rape/suitable planting densities/north drought and cold region分类
农业科技引用本文复制引用
方彦,孙万仓,李强,周继红,叶剑,杨仁义,武军艳..北方旱寒区冬油菜种植密度对生态条件的响应[J].干旱地区农业研究,2012,35(5):46-50,5.基金项目
农业部公益性行业(农业)科研专项经费项目(200903002-04) （农业）
国家高技术研究发展计划(863计划)项目“强优势油菜杂交种的创制与应用(2011AA10A104)” （863计划）
现代农业产业技术体系建设专项资金项目(CARS-13) （CARS-13）
