摘要
构建可持续应用评价指标体系和评价方法,筛选具有可持续性、适合南方双季稻区冬季绿色高效循环复合种植模式。在长期水旱轮作的基础上,通过连续2年田间定位试验,采用能值分析理论评价水旱轮作条件下稻田生态系统的可持续性。结果表明:稻田水旱轮作4种模式的总能值投入和总能值产出大小均表现为油菜-早稻-晚稻→油菜-早稻-玉米‖花生>黑麦草-早稻-晚稻→黑麦草-早稻-玉米‖大豆=混播绿肥-早稻-晚稻→混播绿肥-早稻-玉米‖芝麻>紫云英-早稻-晚稻→紫云英-早稻-晚稻。混播绿肥-早稻-晚稻→混播绿肥-早稻-玉米‖芝麻的系统可持续能值指数最高,为0.0315,而油菜-早稻-晚稻→油菜-早稻-玉米‖花生最低,为0.0148。各模式可持续发展指数均为1以下,表明4种种植系统对环境带来了很大的压力,不可更新资源的利用量较大,造成了环境负载率较高,导致可持续发展指数较低,其中"混播绿肥-早稻-晚稻→混播绿肥-早稻-玉米‖芝麻"模式是值得推广的。
The present study aims to establish a sustainable application evaluation index system and assessment method,screening a sustainable,suitable for double rice-cropping system with winter green manure for sustainable agriculture insouthern double cropping region.By two consecutive years of field experiment,we evaluated the sustainability of riceecosystem with emergy analysis under paddy-upland rotation systems.The results showed that under upland rotation the fourtreatments of total energy input and output values are expressed as rapeseed-rice-rice→rapeseed-rice-corn‖peanut>ryegrass-rice-rice→ryegrass-rice-corn‖soybean=mixed green manure-rice-rice→mixed green manure-rice-corn‖sesame>milk vetch-rice-rice→milk vetch-rice-rice.The sustainable energy index of mixed green manure-rice-rice→mixed green manure-rice-corn‖systems sesame is the highest of0.0315,and rapeseed-rice-rice→rapeseed-rice-corn‖peanut is the lowest of0.0148.In this study,sustainability indexes of four kinds of cropping systems are below one.Theenvironment has brought a lot of pressure.A large amount of non-renewable resources utilization results in a higher environment load,and thus lower sustainability index.The cropping systems of“mixed green manure-rice-rice→mixedgreen manure-rice-corn‖sesame”is worth promoting.
作者
杨滨娟
孙松
陈洪俊
黄国勤
YANG Binjuan;SUN Song;CHEN Hongjun;HUANG Guoqin(Research Center on Ecological Science, Jiangxi Agricultural University, Nanchang 330045, China;State Key Laboratory of Soil and Sustainable Agriculture (Institute of Soil Science, Chinese Academy of Sciences),Nanjing 210008, China)
出处
《生态科学》
CSCD
2017年第1期123-131,共9页
Ecological Science
基金
土壤与农业可持续发展国家重点实验室开放课题(Y412201413)
国家科技支撑计划课题"鄱阳湖生态经济区绿色高效循环农业技术集成与示范"第1研究任务(2012BAD14B14-01)
关键词
复种轮作
能值分析
可持续性
双季稻田
paddy-upland rotation
emergy analysis
sustainability
paddy field
