Climate Change Data Portal
DOI | 10.1016/j.fcr.2019.02.004 |
Can ratoon cropping improve resource use efficiencies and profitability of rice in central China? | |
Yuan, Shen1; Cassman, Kenneth G.2; Huang, Jianliang1; Peng, Shaobing1; Grassini, Patricio2 | |
发表日期 | 2019 |
ISSN | 0378-4290 |
EISSN | 1872-6852 |
卷号 | 234页码:66-72 |
英文摘要 | Identifying cropping systems with small global warming potential (GWP) per unit of productivity is important to ensure food security while minimizing environmental footprint. During recent decades, double-season rice (DR) systems in central China have progressively shifted into single-crop, middle-season rice (MR) due to high costs and labor requirements of double-season rice. Ratoon rice (RR) has been proposed as an alternative system that reconciliates both high annual productivity and relatively low costs and labor requirements. Here we used on farm data collected from 240 farmer fields planted with rice in 2016 to evaluate annual energy balance, environmental impact, and net profit of MR, DR, and RR cropping systems in central China. Energy factors, emission values, and commodity prices obtained from literature and official statistics were used to estimate energy balance, GWP, and economic profit. Average annual yield was 7.7, 15.3. and 13.2 Mg ha(-1) for MR, DR, and RR systems, respectively. Average total annual energy input (36 GJ ha(-1)), GWP (9783 kg ha(-1)), and production cost (3057 $ha(-1)) of RR were 35-48% higher than those of MR. However, RR achieved 72-129% higher annual grain yield (13.2 Mg ha(-1)), net energy yield (159 GJ ha(-1)), and net economic return (2330 $ha(-1)) than MR. Compared with DR, RR produced statistically similar net energy yield while doubling the net economic return, with 32-42% lower energy input, production costs, and GWP. Consequently, RR exhibited significantly higher net energy ratio and benefit-to-cost ratio, and substantially lower yield-scaled GWP than the other two cropping systems. In the context of DR being replaced by MR, our analysis indicated that RR can be a viable option to achieve both high annual productivity and large positive energy balance and profit, while reducing the environmental impact. |
WOS研究方向 | Agriculture |
来源期刊 | FIELD CROPS RESEARCH |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/94915 |
作者单位 | 1.Huazhong Agr Univ, Coll Plant Sci & Technol, MARA Key Lab Crop Ecophysiol & Farming Syst Middl, Natl Key Lab Crop Genet Improvement, Wuhan 430070, Hubei, Peoples R China; 2.Univ Nebraska, Dept Agron & Hort, Lincoln, NE 68583 USA |
推荐引用方式 GB/T 7714 | Yuan, Shen,Cassman, Kenneth G.,Huang, Jianliang,et al. Can ratoon cropping improve resource use efficiencies and profitability of rice in central China?[J],2019,234:66-72. |
APA | Yuan, Shen,Cassman, Kenneth G.,Huang, Jianliang,Peng, Shaobing,&Grassini, Patricio.(2019).Can ratoon cropping improve resource use efficiencies and profitability of rice in central China?.FIELD CROPS RESEARCH,234,66-72. |
MLA | Yuan, Shen,et al."Can ratoon cropping improve resource use efficiencies and profitability of rice in central China?".FIELD CROPS RESEARCH 234(2019):66-72. |
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。