摘要
为光泽县实施沼液安全利用的可行性提供科学支撑,在光泽县山头村开展10组不同沼液灌溉水稻的方式,观测稻谷产量、品质、氮素利用率等指标。结果表明:沼液与化肥合理搭配,能够提升水稻产量和稻米品质,不同处理稻米重金属含量均符合食品中重金属限量标准。综合稻谷产量和沼液消纳等因素考虑,试验宜选用基肥50%化肥+100%沼液分蘖肥配施100%沼液处理的方案为最佳,该方案稻田沼液消纳能力为(纯氮)153 kg/hm^(2)。据此测算光泽县适宜沼液浇灌的稻田承载力为该县生猪达产养殖负荷的136.8%。
In order to provide scientific support for the feasibility of implementing safe utilization of biogas slurry in Guangze County, 10 different treatments of biogas slurry irrigated rice were carried out in Shantou village of Guangze County, and the indexes of rice yield, quality and nitrogen use efficiency were observed.The results showed that the reasonable combination of biogas slurry and chemical fertilizer could improve the yield and quality of rice, and the heavy metal content of rice under different treatments all met the limit standard of heavy metal in food. Considering the rice yield and biogas slurry absorption and other factors, the optimal treatment scheme is 50% base fertilizer fertilizer +100%biogas slurry tillering fertilizer combined with 100% biogas slurry. The biogas slurry absorption capacity of paddy field is(pure nitrogen) 153 kg/hm^(2).Therefore, the carrying capacity of paddy field suitable for biogas slurry irrigation in Guangze County is 136.8% of the pig production and breeding load.
作者
李小女
叶菁
于丽娜
闫晶
朱惠琼
罗旭辉
LI Xiaonv;YE Jing;YU Lina;YAN Jing;ZHU Huiqiong;LUO Xuhui(Nanping Guangze Ecological Environment Bureau,Guangze 354100,China;Institute of Agroecology,Fujian Academy of Agricultural Sciences/Fujian Key Laboratory of Red Soil Agro-Ecological Processes in Mountainous Areas,Fuzhou 350000,China;Technology Center of Solid Waste and Chemical Management,Ministry of Ecology and Environment,Beijing 100029,China;Biomass Engineering Center,College of Agronomy,China Agricultural University,Beijing 100193,China)
出处
《再生资源与循环经济》
2022年第11期43-47,共5页
Recyclable Resources and Circular Economy
基金
福建省红壤山地农业生态过程重点实验室开放项目
福建省农业科学院创新团队项目(CXTD2021009-1)
“无废城市”试点——种养循环生态农业模式建立及环境风险研究。
关键词
沼液
安全利用
稻田
生态承载力
biogas slurry
safe utilization
paddy
eco-environmental capacity
