摘要
以北丰-14为供试品种,采用五因素三水平实施方案,系统研究了大豆在不同密度、施肥量处理下,对氮素吸收的规律。结果表明:随着大豆生长发育进程的推进,大豆各器官N素浓度的变化,除籽粒呈上升趋势外,其它各器官均呈下降趋势,且叶片的氮素含量始终高于茎杆和叶柄;最高吸收速率出现在结荚至鼓粒期,其数值为15.17mg/(株·d)。
The experiment studied soybean law of nitrogen absorption, distribution and transferring under different densities and fertilizer treatments, taking BeiFeng-14 as test variety and adopting 5 factors and 3 levels treatment. The result is as following: As growing of soybean, the nitrogen concentration in each soybean organ is descending except for seed; moreover, leaf's nitrogen is always larger than stem and leafstalk. The largest absorption rate appears form pod- setting to pod- filing, which is 15.17mg /d individual plant.
出处
《中国农学通报》
CSCD
2004年第6期162-165,共4页
Chinese Agricultural Science Bulletin
基金
内蒙古自治区"九五"重大科技攻关课题(960101)资助
