期刊论文

中文

水土保持学报

1009-2242

2006

20

4

106-109

10.3321/j.issn:1009-2242.2006.04.025

国家“948”项目（2003-Q04）资助；

本校为第一机构

采用盆栽试验研究施氮对双低油菜吸氮特性及产量的影响.结果表明,植株氮素累积量,施氮处理从苗期到抽苔末期迅速增加,抽苔末期到开花末期下降,开花末期后有所回升,但仍没有超过抽苔末期的氮素累积量;不施氮处理与施氮处理有类似的变化趋势,但变化幅度明显小于施氮处理,而且开花末期后的氮素累积量超过了抽苔末期.无论施氮与否,营养器官含氮量随生育期的进程持续下降,而生殖器官含氮量施氮时持续下降,不施氮时则呈单峰曲线.干物质累积最大速率出现的日期,不施氮处理明显早于施氮处理.氮素生理效率,施氮处理在角果发育期最高,而不施氮处理在开花末期最高.施氮明显增加植株氮素累积量、植株含氮量、...

The effect of nitrogen supply on absorbing nitrogen feature and yield of ＂double low＂ oilseed rape was studied by using of pot experiment. Results indicated that, for supplying nitrogen oilseed rapes, their nitrogen accumulation amounts quickly increased from seedling to later stage of stem enlongation, while declined from later stage of stem enlongation to later flowing stage, increased after flowing stage, which does not still exceeded nitrogen accumulation amounts of later stage of stem enlongation. The same change tendency was found in tr...