摘要
针对城镇生活污泥施入农田的潜在污染风险问题,通过田间试验,开展了城镇生活污泥在小麦上的施用效果研究,探讨了施用城镇生活污泥对小麦产量和品质及安全性的影响,以期为城镇生活污泥农业上资源化利用提供依据。研究结果表明:施用城镇生活污泥有助于提高小麦产量。单施生活污泥(T2、T3)较空白不施肥(CK)处理小麦增产83.85%~139.04%,一定范围内,小麦产量随着生活污泥用量的增加而增大。在生活污泥2250 kg/hm^(2)配合复合肥450 kg/hm^(2)(T6)处理更有助于小麦产量增加,合理配施城镇生活污泥有助于有机养分替代及化肥减量。施用城镇生活污泥有利于提升小麦籽粒品质。与空白不施肥(CK)处理相比,施用生活污泥显著提高了小麦籽粒干面筋、湿面筋及淀粉含量,单施生活污泥6000 kg/hm^(2)(T3)处理的小麦籽粒干面筋、湿面筋和淀粉含量分别提高了19.7%、15.2%和7.83%。部分化肥配施生活污泥(T4、T9)处理小麦籽粒中Cr含量超过国家限量标准(1 mg/kg)。随着生活污泥施用量的增加,小麦籽粒重金属富集的风险增高,但不同元素增幅存在差异。施用城镇生活污泥,小麦籽粒中多环芳烃类、酞酸酯类有机污染物含量符合食品安全国家标准。城镇生活污泥农用时,建议单独施用生活污泥用量6000 kg/hm^(2);生活污泥与化肥进行配施的情况下,用量为生活污泥2250 kg/hm^(2)+复合肥(15-15-15)450 kg/hm^(2)。
Aiming at the potential pollution risk of urban domestic sludge applied to farmland,field experiment was carried out to explore the impacts of the application of urban domestic sludge on the yield,quality and safety of wheat,in order to provide a basis for the utilization of urban domestic sludge in agriculture.The results showed that the application of municipal sewage sludge improved wheat yield.The yield of wheat under single application of domestic sludge(T2,T3)was increased by 83.85%~139.04%compared with that of CK treatment.Within a certain range,the wheat yield increased with the increase of the amount of domestic sludge.The treatment of domestic sludge 2250 kg/hm^(2)with compound fertilizer 450 kg/hm^(2)(T6)was more conducive to the increase of wheat yield,and the rational application of urban domestic sludge was conducive to the replacement of organic nutrients and the reduction of fertilizer.The application of municipal sewage sludge was beneficial to the improvement of wheat grain quality.Compared with CK treatment,the contents of wheat grain dry gluten,wet gluten and starch were significantly increased by applying domestic sludge,and the contents of wheat grain dry gluten and wet gluten were increased by 19.7%,15.2%and 7.83%by applying domestic sludge alone at 6000 kg/hm^(2)(T3).The Cr content in wheat grains of some fertilizers treated with domestic sludge(T4,T9)exceeded the national limit(1 mg/kg).With the increase of domestic sludge,the risk of heavy metal enrichment in wheat grains increased,but the increase of different elements was different.The contents of polycyclic aromatic hydrocarbons and phthalates organic pollutants in wheat seeds were in line with the national food safety standards.For agricultural use of urban domestic sludge,it is recommended to apply it separately at the level of 6000 kg/hm^(2).In the case of the combination application of domestic sludge and chemical fertilizer,2250 kg/hm^(2) of domestic sludge+compound fertilizer(15-15-15)450 kg/hm^(2) of dosage is recommended.
作者
武升
张俊森
张杰瑜
王强
张震
李国亮
康婷婷
马友华
WU Sheng;ZHANG Jun-sen;ZHANG Jie-yu;WANG Qiang;ZHANG Zhen;LI Guo-liang;KANG Ting-ting;MA You-hua(College of Resources and Environment,Anhui Agricultural University,Hefei Anhui 230036;Lu’an Vocational Technical College,Lu’an anhui 237158;Bengbu Qirun Environmental Engineering Technology Co.Ltd.,Bengbu Anhui 233000;Bengbu Sludge Treatment and Disposal and Resource Utilization Engineering Technology Research Center,Bengbu Anhui 233000)
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2021年第3期324-330,共7页
Soil and Fertilizer Sciences in China
关键词
生活污泥
小麦
产量
品质
重金属
有机污染物
domestic sludge
wheat
production
quality
heavy metals
organic pollutant
作者简介
武升(1991-),男,安徽萧县人,助理研究员,硕士,主要从事农业资源与环境领域研究。E-mail:1916684369@qq.com;通讯作者:张杰瑜,E-mail:780038719@qq.com。
