摘要
为了对四川省秸秆肥料化、能源化综合利用潜力以及秸秆生态足迹进行评估,本研究根据《四川统计年鉴2019》中农作物产量概算出各地级市主要农作物秸秆产生量,并通过秸秆的养分含量系数和原料产气率估算出农作物秸秆肥料化与能源化利用潜力,结合能值理论,分析农作物秸秆的生态足迹特征。结果表明,2018年四川省主要农作物(稻谷、小麦、玉米、豆类、薯类、花生、油菜籽)产生的秸秆总量为3038.74万t;四川省农作物秸秆折算成有机肥的量为6684.41万t,秸秆还田可减少化肥投入36.81亿元;能源化利用产沼气潜力为132.53×10^8m^3;四川省3种主要农作物秸秆利用的人均总生态足迹为8.458×10^-2hm^2,人均总生态承载力为9.044×10^-2hm^2,人均生态盈余达0.587×10^-2hm^2。说明四川省主要作物秸秆的整体利用方式比较合理;21个地级市(自治州)中南充市秸秆资源量、有机肥生产潜力和沼气潜力均最大,分别为282.66万t、624.45万t、12.39×10^8m^3。
In order to evaluate the comprehensive utilization potential of straws as fertilizer and energy and the ecological footprint of straw resources in Sichuan Province,we estimated the straw production of major crops in each prefecture-level city,and the potential of fertilizer and energy utilization of crop straw through the nutrient content coefficient of straw and gas yield.Based on the energy value theory,the ecological footprint characteristics of crop straw were also analyzed.As a result,the total amount of straw produced by the main crops(rice,wheat,corn,beans,potato,peanut and rapeseed)in Sichuan Province was 30.3874 million tons.The amount of crop straws converted into organic fertilizer in Sichuan Province was 66.8441 million tons.And the economic benefit was 3.681 billion yuan.The potential of biogas production from energy utilization was 13.253 billion m^3.The total ecological footprint of straw utilization of three major crops in Sichuan Province was 8.458×10^-2hm^2,the total ecological carrying capacity was 9.044×10^-2hm^2,and the ecological surplus was 0.587×10^-2hm^2.The utilization of straws of main crops in Sichuan Province was reasonable.Among the 21 prefecture-level cities in Sichuan Province,Nanchong city had the largest straw resource,organic fertilizer production potential and biogas potential,which were 2.8266 million tons,6.2445 million tons and 1.239 billion m^3 respectively.
作者
陈炀
王丽霞
杨毅
王军英
孙鲁翔
杨孝广
邵蕾
Chen Yang;Wang Lixia;Yang Yi;Wang Junying;Sun Luxiang;Yang Xiaoguang;Shao Lei(Yantai Research Institute,China Agricultural University,Yantai 264670,China;Muping District Animal Husbandry and Veterinary Station of Yantai City,Yantai 264100,China)
出处
《山东农业科学》
2020年第8期110-114,共5页
Shandong Agricultural Sciences
基金
山东省重点研发计划项目(2019GNC106124)
烟台开发区创新创业领军团队项目(TD2016003)
烟台市校地融合发展项目(2019XDRHXMXK25)
中国农业大学烟台研究院科研基金资助项目(YT201909)。
关键词
秸秆
肥料化
能源化
生态足迹
四川省
Straw
Fertilizer
Energy
Ecological footprint
Sichuan Province
