CAJ | 학술논문

在浙江省嘉兴市南湖区按无公害水稻产地环境要求,对该区103个水稻土样品进行测定和评价.结果表明:该区土壤环境质量较好;耕层全砷、铅、铬、镉和汞的平均含量分别为7.7、23.7、88.9、0.18和0.22 mg·kg～(-1);被测定的土壤未受到砷和铅的污染,有94个点(占总样点数的91.3%)符合无公害水稻产地土壤环境质量要求,但有9个点(占总样点数的8.7%)受到镉和汞的污染.提出了加强污水和固体废弃物处理、农田施用石灰、增施磷肥和有机肥及选用抗逆性强的水稻良种等相应的措施.
재절강성가흥시남호구안무공해수도산지배경요구,대해구103개수도토양품진행측정화평개.결과표명:해구토양배경질량교호;경층전신、연、락、력화홍적평균함량분별위7.7、23.7、88.9、0.18화0.22 mg·kg～(-1);피측정적토양미수도신화연적오염,유94개점(점총양점수적91.3%)부합무공해수도산지토양배경질량요구,단유9개점(점총양점수적8.7%)수도력화홍적오염.제출료가강오수화고체폐기물처리、농전시용석회、증시린비화유궤비급선용항역성강적수도량충등상응적조시.
One hundred and three samples of paddy soils were taken in 2004 from Nanhu district of Jiaxing, northern Zhejiang Province for charactering concentrations of several heavy metals according to environmental requirements for origin of non-environmental pollution rice, and the environmental quality of the soils was assessed. The results show that the environmental quality of paddy soils in the district was well and suitable for rice production of non-environmental pollution. Total concentrations of As, Pb, Cr, Cd and Hg in the soils averaged 7.7, 23.7,88.9, 0.18 and 0.22 mg·kg~(-1), respectively. The soils were not significantly contaminated with As and Pb. Ninty-four samples (91.3%) were qualified for soil environmental quality requirements of non-environmental pollution rice production, while nine samples were polluted by Cd and Hg. In order to secure the safety of rice production, several agricultural measurements were recommended, i.e., strengthening treatments of the polluted water and the waste, using lime to stable heavy metals, increasing the usage of phosphorus and organic fertilizers, and selecting the rice cultivars that are tolerant to heavy metals.