Impact of reduced light intensity on wheat yield and quality: Implications for agroforestry systems
文献类型：期刊论文
| 作者 | Jia, Jiyu3; Xu, Meng4; Bei, Shuikuan3; Zhang, Hongzhi1; Xiao, Li5; Gao, Yonghong5; Zhang, Yongqiang5; Sai, Lihan5; Xue, Lihua5; Lei, Junjie5 |
| 刊名 | AGROFORESTRY SYSTEMS
 |
| 出版日期 | 2021-09-01 |
| 页码 | 13 |
| ISSN号 | 0167-4366 |
| 关键词 | Agroforestry Light intensity Shading period Heterogeneous spatio-temporal light patterns Grain yield Grain quality |
| DOI | 10.1007/s10457-021-00668-w |
| 通讯作者 | Qiao, Xu(qiaoxu403@163.com) |
| 英文摘要 | In China, agroforestry is a traditional practice that diversifies agricultural production and enhances natural resource utilization; however, it create competition for light between trees and understory crops due to heterogeneous spatio-temporal light patterns, and can lead to systemic reductions in grain yield as shade increases. The present study simulated reductions in light intensity caused by walnut trees (Juglans regia L.) before budburst, between budburst to tree foliage expansion, and after foliage expansion, to examine the effects on wheat (Triticum aestivum L.) yield and quality in an agroforestry system. We designed artificial shading systems using black polyethylene screen of varying density (21 %, 44 and 74%reductions in light intensity) at the jointing (approximately 70 d of shading), booting (approximately 55 d of shading), and anthesis (approximately 40 d of shading) stages, with full solar radiation (S0) as a control. Reduced light intensity significantly decreased the number of fertile florets per spike, resulting in a marked decline in grains per spike. Decreased light intensity also significantly decreased photosynthetic rates, grain yield and associated components (spike number, grains per spike, and thousand-grain weight), Furthermore, when applied at the anthesis stage, shading had the strongest negative impact on wheat productivity via decreases in thousand-grain weight. Decreased light intensity substantially enhanced grain and stalk nitrogen concentrations, as well as protein and wet gluten contents. However, the increase in grain quality did not compensate for the decreased final grain yield. Our evaluation of the effect of heterogeneous spatio-temporal light patterns on wheat yield and quality via an artificial shade system may help plantation managers to optimize agroforestry practices in Southern Xinjiang, Northwest China. |
| WOS关键词 | CROP GROWTH ; COMPETITION ; NITROGEN ; GRAIN ; PHOTOSYNTHESIS ; ACCUMULATION ; RADIATION ; TREES |
| 资助项目 | Extension Centre of Agricultural Technology in Zepu County, Kashi Prefecture, Xinjiang |
| WOS研究方向 | Agriculture ; Forestry |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000691931700001 |
| 资助机构 | Extension Centre of Agricultural Technology in Zepu County, Kashi Prefecture, Xinjiang |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/165221]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Qiao, Xu |
| 作者单位 | 1.Xinjiang Acad Agr Sci, Key Lab Oasis Desert Crop Physiol Ecol & Cultivat, Minist Agr & Rural Affairs, Inst Nucl & Biol Technol, Urumqi 830091, Xinjiang, Peoples R China 2.Chinese Acad Med Sci, Peking Union Med Coll, Inst Med Plant Dev, Beijing 100193, Peoples R China 3.China Agr Univ, Natl Acad Agr Green Dev, Minist Educ, Coll Resources & Environm Sci,Key Lab Plant Soil, Beijing 100193, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 5.Xinjiang Acad Agr Sci, Inst Grain Crops, Urumqi 830091, Xinjiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, Jiyu,Xu, Meng,Bei, Shuikuan,et al. Impact of reduced light intensity on wheat yield and quality: Implications for agroforestry systems[J]. AGROFORESTRY SYSTEMS,2021:13. |
| APA | Jia, Jiyu.,Xu, Meng.,Bei, Shuikuan.,Zhang, Hongzhi.,Xiao, Li.,...&Qiao, Xu.(2021).Impact of reduced light intensity on wheat yield and quality: Implications for agroforestry systems.AGROFORESTRY SYSTEMS,13. |
| MLA | Jia, Jiyu,et al."Impact of reduced light intensity on wheat yield and quality: Implications for agroforestry systems".AGROFORESTRY SYSTEMS (2021):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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