Water supply from pearl millet by hydraulic lift can mitigate drought stress and improve productivity of rice by the close mixed planting
Water supply from pearl millet by hydraulic lift can mitigate drought stress and improve productivity of rice by the close mixed planting
复制标题
水力提升珍珠粟供水可缓解干旱胁迫，密混种植提高水稻产量
DOI：
10.1080/1343943x.2018.1428494
复制
发表时间：
2018
影响因子：
2.5
通讯作者：
M. Iijima
中科院分区：
文献类型：
--
作者：
Yasuhiro Izumi;Shinji Okaichi;S. Awala;Yoshimasa Kawato;Y. Watanabe;K. Yamane;M. Iijima
摘要作者提出了两种不同作物混栽的密植技术，使两种作物的根系紧密缠绕。特别是，适应干旱的高地作物（如珍珠粟或高粱）和适应洪水的低地水稻作物的组合将有利于克服干旱和洪水条件，减少作物歉收的风险。在我们以前的研究中，我们发现，由于水稻根系向根际水环境释放氧气，混作水稻减轻了洪水胁迫造成的高地作物产量损失。在本研究中，我们进行了两个实验，以评估是否混合种植的抗旱谷物，珍珠粟，将提高性能的共同增长的干旱敏感作物，水稻在干旱条件下。在田间试验中，在干旱条件下，从水稻与珍珠粟混作的植株中获得了一些籽粒。然而，没有水稻成熟的一熟制。在氘分析模型试验中，证实了珍珠粟根系从深层土壤吸收的水分被水稻利用，表明混作水稻能够抵御干旱胁迫，利用水力提升释放到上层土壤的水分完成灌浆。
Abstract The authors have proposed the close mixed planting technique using mixed seedlings of two different crop species that results in close tangling of their root systems. Especially, the combination of drought-adaptive upland crops (e.g. pearl millet or sorghum) and flood-adaptive lowland crop of rice would be beneficial to overcome the drought and flood conditions and to reduce the risks of crop failure. In our previous studies, we found that upland crop yield losses by flood stress was mitigated by mix-cropped rice, owing to the oxygen gas released from the rice roots into the aqueous rhizosphere. In the present study, we conducted two experiments to assess whether mixed cropping a drought-resistant cereal, pearl millet, would improve the performance of co-growing drought-susceptible crop, rice under drought conditions. In the field experiment, some grains were obtained from the rice plants mix-cropped with pearl millet under drought condition. However, no rice matured in the single cropping system. In the model experiment using deuterium analysis, it was confirmed that water absorbed by pearl millet roots from deep soil layer was utilized by rice, suggesting that mix-cropped rice could withstand drought stress and complete grain filling using water released into the upper soil layer by hydraulic lift.
稻混秧缓解半干旱谷物洪涝胁迫的田间评价
影响因子：
5.2
作者：
Awala;S. K.;Yamane;K.;Izumi;Y.;Fujioka;Y.;Watanabe;Y.;Kaede C. W.;Kawato;Y.;Mwandemele;O. D.;& Iijima;M.
通讯作者：
M.
影响因子：
6.9
作者：
Miyamoto, N;Steudle, E;Lafitte, R
通讯作者：
Lafitte, R
影响因子：
2.5
作者：
M. Iijima;Y. Hirooka;Yoshimasa Kawato;Y. Watanabe;K. Wada;Nodoka Shinohara;Pamwenafye I. Nanhapo
通讯作者：
M. Iijima;Y. Hirooka;Yoshimasa Kawato;Y. Watanabe;K. Wada;Nodoka Shinohara;Pamwenafye I. Nanhapo