Remedial Application of Urea Eliminates Yield Losses in Wheat Waterlogged during Stem Elongation
Remedial Application of Urea Eliminates Yield Losses in Wheat Waterlogged during Stem Elongation
复制标题
尿素的补救施用消除了小麦茎伸长期间淹水的产量损失
DOI：
10.3390/agriculture10010023
复制
发表时间：
2020-01
影响因子：
3.6
通讯作者：
Guo Wenshan
中科院分区：
文献类型：
--
作者：
Ding Jinfeng;Liang Peng;Guo Desheng;Liu Dejun;Yin Mingxiao;Zhu Min;Li Chunyan;Zhu Xinkai;Guo Wenshan
在降雨量高的地区，水涝仍然是小麦生产的一个严重制约因素。外源施氮可有效减轻涝渍的不利影响，但因事件不同而异。为了提供高效的补救策略，本盆栽研究调查了在茎伸长期（Zadoks生长期，GS 33）开始的10天的淹水后施用尿素的效果。补救措施包括在涝后第0天（FU 1）和第0天和第7天（FU 2）叶面喷施尿素溶液（0.108 g/盆），以及在土壤含水量约为田间持水量的80%时（SU 1和SU 2）进行单剂量和双剂量尿素溶液的土壤表面喷施。涝渍显着降低粮食产量，总氮吸收，氮偏要素生产率（分别为11%，18%和11%），但随后的补救措施，这些改善到不同程度。这些修复措施可有效缓解甚至消除因涝渍而造成的粮食减产。FU 2和SU 2处理的籽粒产量和氮素偏生产力高于FU 1和SU 1。在所有处理中，SU 2处理的植株表现出最高的总氮吸收量和追肥氮回收率。产量损失减少归因于（1）小穗育性和每小穗粒数增加导致的每穗粒数增加和（2）通过延缓顶叶衰老（提高叶绿素含量和保持绿色叶面积）增加光合生产。本研究表明，在水稻拔节期受涝后短时间施用尿素具有显著的补救效果。
Waterlogging remains a critical constraint to wheat production in areas with high rainfall. Exogenous application of nitrogen (N) can effectively diminish the adverse effects of waterlogging, but varies with specific events. To provide highly efficient remedial strategies, this pot study investigated the effects of urea application following 10 days of waterlogging initialing at the stem elongation stage (Zadoks growth stage, GS33). The remedial measures included foliar spray of urea solution at a single dose (0.108 g urea per pot) at the 0th day after finishing waterlogging (FU1) and twice at the 0th and 7th day (FU2), and soil surface spray of urea solution at single and double doses when soil water content was approximately 80% of field capacity (SU1 and SU2, respectively). Waterlogging significantly reduced grain yield, total N uptake, and N partial factor productivity (by 11%, 18%, and 11%, respectively), but subsequent remedial measures improved these to variable degrees. Reduction in grain yield owing to waterlogging could be effectively alleviated and even eliminated using these remediations. Grain yield and N partial factor productivity were higher under FU2 and SU2 than FU1 and SU1. Among all treatments, plants under SU2 exhibited the highest total N uptake and top-dressing N recovery. Diminished yield losses were attributed to (1) increased kernel number per spike resulting from increased spikelet fertility and kernel number per spikelet and (2) increased photosynthetic production by delaying senescence (improved chlorophyll content and maintained green leaf area) of the top leaves. This study suggests that urea application for a brief period of time following waterlogging during the stem elongation stage has remarkable remedial effects.
登录
查看更多内容
影响因子：
6.9
作者：
Nguyen TN;Tuan PA;Mukherjee S;Son S;Ayele BT
通讯作者：
Ayele BT
影响因子：
4.9
作者：
L. Nguyen;Y. Osanai;I. Anderson;M. Bange;D. Tissue;B. Singh
通讯作者：
L. Nguyen;Y. Osanai;I. Anderson;M. Bange;D. Tissue;B. Singh
影响因子：
3
作者：
Pang, Jiayin;Ross, John;Shabala, Sergey
通讯作者：
Shabala, Sergey
影响因子：
1.9
作者：
Acuna, Tina Botwright;Dean, Geoff;Riffkin, Penny
通讯作者：
Riffkin, Penny
DOI：
10.1071/fp11165
发表时间：
2012-02
期刊：
Functional plant biology : FPB
影响因子：
--
作者：
Huawei Li;J. Cai;Fulai Liu;D. Jiang;T. Dai;W. Cao
通讯作者：
Huawei Li;J. Cai;Fulai Liu;D. Jiang;T. Dai;W. Cao