Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3389/fpls.2018.00483 |
Interspecies Interactions in Relation to Root Distribution Across the Rooting Profile in Wheat-Maize Intercropping Under Different Plant Densities | |
Wang, Yifan1,2; Qin, Yazhou3; Chai, Qiang1,2; Feng, Fuxue1,4; Zhao, Cai1,2; Yu, Aizhong1,2 | |
通讯作者 | Chai, Qiang |
来源期刊 | FRONTIERS IN PLANT SCIENCE |
ISSN | 1664-462X |
出版年 | 2018 |
卷号 | 9 |
英文摘要 | In wheat-maize intercropping systems, the maize is often disadvantageous over the wheat during the co-growth period. It is unknown whether the impaired growth of maize can be recovered through the enhancement of the belowground interspecies interactions. In this study, we (i) determined the mechanism of the belowground interaction in relation to root growth and distribution under different maize plant densities, and (ii) quantified the "recovery effect" of maize after wheat harvest. The three-year (2014-2016) field experiment was conducted at the Oasis Agriculture Research Station of Gansu Agricultural University, Wuwei, Northwest China. Root weight density (RWD), root length density (RLD), and root surface area density (RSAD), were measured in single-cropped maize (M), single-cropped wheat on and three intercropping systems (i) wheat-maize intercropping with no root barrier (i.e., complete belowground interaction, IC), (ii) nylon mesh root barrier (partial belowground interaction, IC-PRI), and (iii) plastic sheet root barrier (no belowground interaction, IC-NRI). The intercropped maize was planted at low (45,000 plants ha(-1)) and high (52,000 plants ha(-1)) densities. During the wheat/maize co-growth period, the IC treatment increased the RWD, RLD, and RSAD of the intercropped wheat in the 20-100 cm soil depth compared to the IC-PRI and IC-NRI systems; intercropped maize had 53% lower RWD, 81% lower RLD, and 70% lower RSAD than single-cropped maize. After wheat harvest, the intercropped maize recovered the growth with the increase of RWD by 40%, RLD by 44% and RSAD by 11%, compared to the single-cropped maize. Comparisons among the three intercropping systems revealed that the "recovery effect" of the intercropped maize was attributable to complete belowground interspecies interaction by 143%, the compensational effect due to root overlap by 35%, and the compensational effect due to water and nutrient exchange (CWN) by 80%. The higher maize plant density provided a greater recovery effect due to increased RWD and RLD. Higher maize plant density stimulated greater belowground interspecies interaction that promoted root growth and development, strengthened the recovery effect, and increased crop productivity. |
英文关键词 | intercropping interspecies interaction plant density root weight density root length density root surface area density recovery effect grain yield |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000430470800001 |
WOS关键词 | NO-TILL CANOLA ; CROP PRODUCTIVITY ; CANADIAN PRAIRIES ; NORTHWEST CHINA ; SOIL PROPERTIES ; NUTRIENT-UPTAKE ; LENGTH DENSITY ; USE EFFICIENCY ; WINTER-WHEAT ; PULSE CROPS |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/209471 |
作者单位 | 1.Gansu Prov Key Lab Arid Land Crop Sci, Lanzhou, Gansu, Peoples R China; 2.Gansu Agr Univ, Coll Agron, Lanzhou, Gansu, Peoples R China; 3.Agr Shaya Cty Serv, Xinjiang, Peoples R China; 4.Gansu Agr Univ, Sch Engn, Lanzhou, Gansu, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Yifan,Qin, Yazhou,Chai, Qiang,et al. Interspecies Interactions in Relation to Root Distribution Across the Rooting Profile in Wheat-Maize Intercropping Under Different Plant Densities[J],2018,9. |
APA | Wang, Yifan,Qin, Yazhou,Chai, Qiang,Feng, Fuxue,Zhao, Cai,&Yu, Aizhong.(2018).Interspecies Interactions in Relation to Root Distribution Across the Rooting Profile in Wheat-Maize Intercropping Under Different Plant Densities.FRONTIERS IN PLANT SCIENCE,9. |
MLA | Wang, Yifan,et al."Interspecies Interactions in Relation to Root Distribution Across the Rooting Profile in Wheat-Maize Intercropping Under Different Plant Densities".FRONTIERS IN PLANT SCIENCE 9(2018). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。