期刊论文

Ji, X.-H.

中文

生态与农村环境学报

1673-4831

2017

33

12

1125-1131

10.11934/j.issn.1673-4831.2017.12.009

湖南省重点研发计划农业领域技术创新项目（2016NK2190）； 国家重点研发计划（2016YFD0800705）； 水利部公益性行业科研专项（201501019）；

本校为第一机构

采用盆栽试验方法,以外源添加镉(Cd)模拟土壤镉污染,研究水稻不同生育期(分蘖盛期和灌浆期)淹水以及淹水时间对水稻产量及吸收累积Cd的影响。结果表明,与常规灌溉处理(CI)相比,其他不同淹水时间处理均出现一定程度减产,其中全生育期湿润灌溉(WI)、分蘖盛期开始淹水1~ 4周(T1、T2、T3和T4)5个处理的水稻产量显著下降,降幅分别为23.7%、16.0%、15.5%、20.2%和18.6%。随着淹水时间的延长,糙米Cd含量呈下降趋势,其中以全生育期淹水处理(WF)的糙米Cd含量最低,仅为WI的3.4%。在相同淹水时间条件下,分蘖盛期开始淹水1~ 4周处理的糙米Cd含量较灌浆开始淹水1 ~ 4周处理(F1、F2、F3和F4)分别降低了27.1%(P...

A pot experiment was conducted using extraneous cadmium as soil Cd contaminant for exploration of effect of timing and duration of waterlogging on rice yield and Cd accumulation in rice. Results show that rice yield lowered to a varying extent in all the flooding treatments vs CK (CI), especially Treatment WI (wetting irrigation throughout the rice growing season) and Treatments T1, T2, T3 and T4 (flooding beginning at the prime tillering stage and lasting for 1, 2, 3 and 4 weeks, respectively), which was 23.7%, 16.0%, 15.5%, 20.2% and 18.6%, l...