| 磷石膏对麦田CO2排放和小麦产量的影响及其经济环境效益分析 |
| 摘要点击 1872 全文点击 1050 投稿时间：2014-12-30 修订日期：2015-03-13 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 小麦田 二氧化碳 磷石膏 增产 减排 经济效益 环境效益 |
| 英文关键词 wheat field CO2 phosphogypsum increasing yield reducing greenhouse gas economic benefits environmental benefits |
| 作者 | 单位 | E-mail | | 李季 | 南京信息工程大学应用气象学院农业资源与环境系,南京 210044 | liji2013nuist@163.com | | 吴洪生 | 南京信息工程大学应用气象学院农业资源与环境系,南京 210044 | wuhsluck@163.com | | 高志球 | 南京信息工程大学应用气象学院农业资源与环境系,南京 210044 | zgao@nuist.edu.cn | | 尚小厦 | 南京信息工程大学应用气象学院农业资源与环境系,南京 210044 | | | 郑培慧 | 南京信息工程大学应用气象学院农业资源与环境系,南京 210044 | | | 印进 | 南京信息工程大学应用气象学院农业资源与环境系,南京 210044 | | | Kakpa Didier | 南京信息工程大学应用气象学院农业资源与环境系,南京 210044 | | | 任迁琪 | 南京信息工程大学应用气象学院农业资源与环境系,南京 210044 | | | Ogou Katchele Faustin | 南京信息工程大学应用气象学院农业资源与环境系,南京 210044 | | | 陈素云 | 南京信息工程大学应用气象学院农业资源与环境系,南京 210044 | | | 徐亚 | 南京信息工程大学应用气象学院农业资源与环境系,南京 210044 | | | 姚童言 | 南京信息工程大学应用气象学院农业资源与环境系,南京 210044 | | | 季炜 | 南京信息工程大学应用气象学院农业资源与环境系,南京 210044 | | | 钱景珊 | 南京信息工程大学应用气象学院农业资源与环境系,南京 210044 | | | 马世杰 | 南京信息工程大学应用气象学院农业资源与环境系,南京 210044 | |
|
| 中文摘要 |
| 磷石膏是一种可以利用的磷化工废渣,本文以磷石膏为麦田温室气体减排剂,研究磷石膏对小麦生长、麦田温室气体二氧化碳 (CO2)排放的影响,并分析磷石膏资源化利用的经济环境效益. 结果表明,在常规施肥条件下,增施磷石膏 2100 kg·hm-2能显著促进小麦生长,增产达37.71%. 磷石膏对麦田CO2的减排作用在小麦生长的各个时期有所不同:施用磷石膏1050 kg·hm-2处理,在小麦生长拔节期、抽穗期和灌浆期对麦田 CO2的减排效果较为明显,相比对照分别减少 8%、10%和 6%; 在整个小麦生长季累计减少 CO2排放 3%; 施用磷石膏 2100 kg·hm-2处理,在小麦越冬返青期、拔节期和抽穗期,相比对照减少 CO2排放 11%、4%和 12%,在小麦生长季累计减少 CO2排放 7%. 磷石膏施用量较大的处理对 CO2的抑制和减排效果较好. 研究还表明在施用磷石膏的情况下,一定范围内,CO2的排放强度(单位鲜重CO2排放与单位产量CO2排放)与小麦穗长、鲜重和产量呈现显著负相关:即穗长越长,鲜重和产量越大,CO2的排放效率越低. 在碳交易背景下,磷石膏资源化利用具有较高的经济和环境效益,主要体现在:与对照相比,投入/产出从1:8.3变为1:10.7,即在相同投入的情况下可提高28.92%的产出; 每吨磷石膏作为麦田温室气体减排剂,可节省治理环境的费用与增产总额合计约290元. 废渣磷石膏资源化利用,不仅可以减少环境污染、促进小麦生长,而且可以减少CO2排放,对发展低碳农业、生态农业以及可持续发展农业具有重要应用价值. |
| 英文摘要 |
| Phosphogypsum is a phosphorus chemical waste which has not been managed and reused well, resultantly, causing environmental pollution and land-occupation. Phosphogypsum wastes were used as a soil amendment to assess the effect on wheat growth, yield and CO2 emissions from winter wheat fields. Its economic and environmental benefits were analyzed at the same time. The results showed that wheat yield was increased by 37.71% in the treatment of phosphogypsum of 2100 kg·hm-2. Compared with the control treatment, throughout the wheat growing season, CO2 emission was accumulatively reduced by 3% in the treatment of phosphogypsum waste of 1050 kg·hm-2, while reduced by 8%, 10%, and 6% during the jointing stage, heading date and filling period of wheat, respectively; while CO2 emission was accumulatively reduced by 7% in the treatment of phosphogypsum waste of 2100 kg·hm-2 throughout the wheat growing season, as reduced by 11%, 4%, and 12% during the reviving wintering stage, heading date and filling period of wheat, respectively. It was better for CO2 emission reduction in the treatment of a larger amount of phosphogypsum waste. In the case of application of phosphogypsum waste residue within a certain range, the emission intensity of CO2 (CO2 emissions of per unit of fresh weight or CO2 emissions of per unit of yield), spike length, fresh weight and yield showed a significantly negative correlation—the longer the ear length, the greater fresh weight and yield and the lower the CO2 emissions intensity. As to the carbon trading, phosphogypsum utilization was of high economic and environmental benefits. Compared with the control, the ratio of input to output changed from 1: 8.3 to 1: 10.7, which in the same situation of investment the output could be increased by 28.92%; phosphogypsum as a greenhouse gas reducing agent in the wheat field, it could decrease the cost and increase the environmental benefit totally about 290 yuan per unit of ton. The results demonstrated phosphogypsum wastes could obviously decrease the CO2 emission from field soil and had a great potential to control agricultural greenhouse gases. Hopefully it has an important application perspective for the low-carbon, ecological and sustainable agricultural development. |
|
|
|
