Density-dependent maize (Zea mays L.) yield increase in trade-off in reproductive allocation and water use under ridge-furrow plastic-mulching
文献类型：期刊论文
| 作者 | Zhang, Xiao-Feng; Luo, Chong-Liang; Mo, Fei; Ren, Hong-Xu; Mburu, David2; Kavagi, Levis1; Dai, Run-Zi; Wesly, Kiprotich; Ren, Ai-Tian; Nyende, Aggrey Bernard2 |
| 刊名 | FIELD CROPS RESEARCH
 |
| 出版日期 | 2021 |
| 卷号 | 264 |
| 关键词 | Kenya Maize (zea may L.) Planting density Reproductive allocation Ridge-furrow mulching (RFM) |
| ISSN号 | 0378-4290 |
| DOI | 10.1016/j.fcr.2021.108102 |
| 文献子类 | Article |
| 英文摘要 | The law of constant final yield and allometric theory have been seldom used to explore density-dependent yield formation and water use in rainfed farming systems, particularly in ridge-furrow mulching (RFM) system of maize. A two-year RFM field experiment was conducted using maize variety Yuyuan7879 in semiarid Kenya from 2015 to 2016, with four planting densities: 5.2 x 10(4) (D52, conventional density), 6.0 x 10(4) (D60), 6.9 x 10(4) (D69) and 8.5 x 10(4) (D85) plants per hectare. The grain yield and aboveground biomass per plant were significantly decreased with increasing density across two growing seasons. However, the population grain yield significantly was increased from D52 to D60 (from 3395.1-4471.7 kg ha(-1)) but declined significantly from D60 to D69 and D85 (p < 0.05) in 2015 and 2016, respectively. Meanwhile, the population aboveground biomass was significantly promoted from D52 to D60 (p < 0.05) and then remained relatively stable in D69 and D85, achieving a state of constant final yield. Under the improved soil storage, the RFM system raised the rational planting density from conventional D52 to D60 with regard to population yield. Water use efficiency for population yield (WUEG) was the highest at D52 and D60, followed by D69, and the lowest at D85. However, the WUE for the aboveground biomass (WUEA) was significantly lower in D52 than D60 and D85. Principal component analysis suggested that the population grain yield and WUEG were significantly positively associated with the reproductive allocation and leaf growth. This result was further affirmed by the allometric relationship between leaf biomass and body size, since the allometric exponent (<1) was raised with density. Allometric relationship between reproductive and vegetative mass demonstrated that the D60 treatment achieved a relatively balanced allocation of photosynthetic products into reproductive organs in comparison with other treatments. The RFM application significantly improved the availability of soil water, and the rational planting density of maize for better yield and WUEG. Thus, this phenomenon mechanically resulted from relatively better trade-offs between reproductive and vegetative growth, together with moderately increased leaf growth. |
| 学科主题 | Agronomy |
| 出版地 | AMSTERDAM |
| 电子版国际标准刊号 | 1872-6852 |
| WOS关键词 | INTRA-SPECIFIC COMPETITION ; PLANT-DENSITY ; USE EFFICIENCY ; BIOMASS ALLOCATION ; CROP PRODUCTIVITY ; ROOT COMPETITION ; HARVEST INDEX ; HYBRIDS ; MANAGEMENT ; ALLOMETRY |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) ; Social Science Citation Index (SSCI) |
| 语种 | 英语 |
| WOS记录号 | WOS:000633034600003 |
| 出版者 | ELSEVIER |
| 资助机构 | Natural Science Foundation of China [31570415] ; State Technology Support Programme [2015BAD22B04] ; National Specialized Support Plan for Outstanding Talents (Ten Thousand People Plan) |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/26624]  |
| 专题 | 中科院北方资源植物重点实验室 |
| 作者单位 | 1.Jomo Kenyatta Univ Agr & Technol, POB 31382-00600, Nairobi, Kenya 2.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China 3.Lanzhou Univ, Sch Life Sci, Inst Arid Agroecol, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Peoples R China 4.United Nations Environm Programme, POB 47074-00100, Nairobi, Kenya |
| 推荐引用方式 GB/T 7714 | Zhang, Xiao-Feng,Luo, Chong-Liang,Mo, Fei,et al. Density-dependent maize (Zea mays L.) yield increase in trade-off in reproductive allocation and water use under ridge-furrow plastic-mulching[J]. FIELD CROPS RESEARCH,2021,264. |
| APA | Zhang, Xiao-Feng.,Luo, Chong-Liang.,Mo, Fei.,Ren, Hong-Xu.,Mburu, David.,...&Xiong, You-Cai.(2021).Density-dependent maize (Zea mays L.) yield increase in trade-off in reproductive allocation and water use under ridge-furrow plastic-mulching.FIELD CROPS RESEARCH,264. |
| MLA | Zhang, Xiao-Feng,et al."Density-dependent maize (Zea mays L.) yield increase in trade-off in reproductive allocation and water use under ridge-furrow plastic-mulching".FIELD CROPS RESEARCH 264(2021). |
入库方式： OAI收割
来源：植物研究所
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