中国油料作物学报2011，Vol.33Issue(5)：487-491,506,6.
不同氮素效率类型油菜的农艺性状、干物质及氮素积累特征
Agronomic traits, dry matter accumulation and N accumulation of different N uptake and utilization efficiency in rapeseed (Brassica napus L.)
摘要
Abstract
In order to recommend fertilizer application for different rapeseed, the most popular 34 cultivars from Yangtze River area were planted in field at Shayang, Hubei province, with the same fertilization level ( N 210kg/hm2,P2O5 45kg/hm\K2O 67.5kg/hm2). The materials were divided into 4 types according to their nitrogen uptake and efficiency. Type A cultivars had both high uptake and utilization efficiency, type B had low uptake but high utilization efficiency, type C had high uptake but low utilization efficiency, and type D had both low uptake and utilization efficiency. Their agronomic traits, dry matter accumulation and N accumulation were investigated. Results showed that type A had strong advantage on inflorescence length, pods on main inflorescence, first branch number and pods of first branches. The higher the nitrogen uptake efficiency, the more dry matter and nitrogen accumulated. The accumulated quantity of dry mass and nitrogen was shown as C (and A) > D (and B). More dry matter and nitrogen were distributed into seeds and less into seed coats in high nitrogen utilization efficiency type A and B. The seed yield and seed nitrogen accumulation were shown as A > B (and C) > D.关键词
油菜/氮吸收效率/氮利用效率/农艺性状Key words
Oilseed rape (Brassica napus L. )/ Nitrogen uptake efficiency/ Nitrogen utilization efficiency/Agronomic traits分类
农业科技引用本文复制引用
刘晓伟,鲁剑巍,李小坤,徐维民,潘琴..不同氮素效率类型油菜的农艺性状、干物质及氮素积累特征[J].中国油料作物学报,2011,33(5):487-491,506,6.基金项目
"十一五"国家科技支撑计划重点项目(2008BADA4B08) （2008BADA4B08）
教育部新世纪人才项目(NCET-07-0345) （NCET-07-0345）
油菜产业技术体系建设(nycytx-005) （nycytx-005）
