安徽农业科学2012，Vol.40Issue(9)：5271-5272,5292,3.
不同水分条件下NO3--N供应对水稻生长·氮吸收速率的影响
Responses of Rice Growth and N Uptake to NO3- -N Supply under Different Water Regimes
摘要
Abstract
[ Objective ] The research aimed to study the effects of NO3--N supply on growth and N uptake of rice cultivar " Wuyujing 3 " under different water regimes. [Method] Rice seedlings were solution-cultured and different water regimes were generated by using PEG6000. [Result ] Under normal water condition, the maximum biomass of rice seedlings were obtained when 60 mg/L NO3- -N was supplied, but plant height of rice seedling wasn' t affected by NO3- -N supply. However, under water stress all tested growth indexes of rice seedlings, including biomass, plant height, root length, root diameter, root volume, root surface area, and number of root tips, decreased with the increase of NO3--N supply. [Conclusion] Water stress can affect the response of rice seedling growth to NO3- -N supply and reduce N uptake rate in rice plant.关键词
水稻/水分胁迫/NO3--N/吸收速率Key words
Rice/ Water stress/ NO3- -N/ Uptake rate分类
农业科技引用本文复制引用
薛小康,胡廷旭,柏彦超,钱晓晴,单玉华..不同水分条件下NO3--N供应对水稻生长·氮吸收速率的影响[J].安徽农业科学,2012,40(9):5271-5272,5292,3.基金项目
扬州大学大学生学术科技创新基金项目(2010-195). （2010-195）
