摘要
本研究利用生命周期评价法(LCA)以2006-2020年河北省花生生产体系化肥投入数据为基础,对其产生的环境影响进行定量化分析,旨在为河北省花生产业发展的环境管理及绿色发展提供决策依据。结果表明:河北省花生生产化肥投入基本情况为氮肥量下降,降幅为38.0%,平均施用量43.26kg/hm^(2),占总施用量的16.1%。复混肥量增加,增幅30.1%,平均施用量217.28kg/hm^(2),占总用量的80.7%。单质磷肥和钾肥施用较少,分别占总施用化肥的2.1%和0.8%,化肥总施用量上升12.6%;花生的氮肥偏生产力维持在30~35kg/kg之间,其氮肥利用率较其他作物高;活性氮排放中NH3挥发最多,占总量的83.8%,其次为硝态氮淋洗NO_(3)^(-),最少的为N_(2)O排放。平均每年可造成NH3挥发28.32kg/hm^(2),NO_(3)^(-)淋洗4.87kg/hm^(2),N_(2)O排放0.62kg/hm^(2);化肥投入造成的年总碳排放量平均18.4万t,单质氮肥施用量对碳排放影响贡献最大,化肥生产的碳排放量大于化肥施用的。
Based on the fertilizer input data of peanut production system in Hebei Province from 2006to 2020,life cycle assessment(LCA)method was adopted to quantitatively analyze its environmental impact,aiming to provide decision-making basis for environmental management and green development of peanut industry in Hebei Province.The results showed that the basic situation of fertilizer input for peanut production in Hebei Province was that the nitrogen fertilizer amount decreased by 38.0%,and the average application amount was 43.26kg/ha,accounting for 16.1%of the total application amount.Compound and mixed fertilizer increased by 30.1%,and the average application amount was 217.28kg/ha,accounting for 80.7%of the total application amount.Phosphorus fertilizer and potassium fertilizer were applied less,accounting for 2.1%and 0.8%of the total applied fertilizer respectively,and the total applied fertilizer increased by 12.6%.The nitrogen partial productivity of peanut was basically maintained between 30 kg/kg and 35kg/kg,and its nitrogen use efficiency was higher than other crops.NH3volatilized the most in active nitrogen emission,accounting for 83.8%of the total,followed by nitrate nitrogen leaching NO_(3)^(-),and N_(2)O emission was the least.On average,NH3volatilization,NO_(3)^(-)leaching and N_(2)O emission can be 28.32 kg/ha,4.87kg/ha and 0.62kg/ha each year.The average annual total carbon emission caused by fertilizer input was 184.0kt.The application rate of nitrogen fertilizer contributed the most to carbon emission,and the carbon emission of fertilizer production was higher than that of fertilizer application.
作者
范燕
赵雪飞
么田
陈胜萍
刘晓光
FAN Yan;ZHAO Xue-fei;YAO Tian;CHEN Sheng-ping;LIU Xiao-guang(Tangshan Academy of Agricultural Sciences,Tangshan 063001,China)
出处
《花生学报》
北大核心
2023年第2期45-51,共7页
Journal of Peanut Science
基金
国家现代农业产业技术体系项目(CARS-13)
河北省现代种业科技创新专项(21326316D)
唐山市科技计划项目(23150209A)。
关键词
花生生产体系
化肥投入
碳足迹
活性氮排放
peanut production system
chemical fertilizer input
carbon footprint
emission of active nitrogen
