期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2011

37

6

592-597

10.3724/SP.J.1238.2011.00592

30971860、31071851:国家自然科学基金 nyctx-00509:国家油菜产业技术体系项目 863;2006BAD21B030:国家高技术研究发展计划（863计划） 09K049:湖南省高等学校创新平台开放基金 2009FJ1006-1,3:国家科技重大专项

本校为第一机构

采用砂培试验,研究了3个油菜品系(231、H29、bin270)在5个施氮水平(0.6、3、6、12、15 mmol/L)下的根系形态与生理特性差异.结果表明:根重、根体积、根长、根系总吸收面积和活跃吸收面积随供氮水平的提高而升高；苗期231的根系活力随供氮水平的提高表现为先降低后增加,H29表现为先降低后增加而后又降低,bin270表现为先增加后降低；盛花期H29根系活力随供氮水平提高表现为先降低后增加,bin270表现为先降低后增加而后又降低,231表现为先增加后降低.同一施氮水平下,bin270的根重、根体积、根长、根系活跃吸收面积(6 mmol/L除外)和根系总吸收面积(6 mmol/L除外)均最大,23 1的根系活跃吸收面积和根系...

In order to explore the difference in roots of different varieties of oilseed rape in response to nitrogen and its contribution to the yield, sand cultural experiment was conducted to study the morphological and physiological characteristics of roots of 3 oilseed rape varieties under five levels of nitrogen supply. The results showed that the root weight, root volume, total absorbing surface area of roots and active absorption area increased with increasing nitrogen level. With the increasing of nitrogen level, the root vitality of varieties H29 and 231 at seedling stage increased first and th...