CAJ | 학술논문

采用野外调查与室内分析的方法研究了利川市茶叶、水稻、黄连和蔬菜基地重金属镉的含量状况，以期为利川市农产品的安全生产提供科学依据。结果表明，利川市农产品基地的土壤存在镉含量超标，农田灌溉水的镉含量极低，所施肥料镉含量符合标准要求，但过磷酸钙等肥料的镉含量任不低，土壤镉含量高与长期大量施用磷肥有直接关系。部分农作物的镉含量也相对较高，同种作物镉的含量与产地土壤隔的含量呈正相关趋势，土壤镉含量偏高是导致部分农产品镉含量超标的主要原因。
채용야외조사여실내분석적방법연구료리천시다협、수도、황련화소채기지중금속력적함량상황，이기위리천시농산품적안전생산제공과학의거。결과표명，리천시농산품기지적토양존재력함량초표，농전관개수적력함량겁저，소시비료력함량부합표준요구，단과린산개등비료적력함량임불저，토양력함량고여장기대량시용린비유직접관계。부분농작물적력함량야상대교고，동충작물력적함량여산지토양격적함량정정상관추세，토양력함량편고시도치부분농산품력함량초표적주요원인。
In this research, the current situation of the cadmium content in the agriculture bases of tea, rice, golden thread, and vegetables were studied, by field studies and indoor experiments, for providing scientific methods for security production of agricultural commodity in Lichuan. The results showed that the soil of agriculture bases in Lichuan had overdose cadmium. Although the irrigation water had lower cadmium content and the fertilizer was also up to standard, some of fertilizer, such as calcium superphosphate, still had higher cadmium content. That was the reason why the high cadmium content of soil was directly related to the overuse of phosphate fertilizer. In addition, it also indicated that the cadmium content of the same field crops and that of soil shared a positive correlation trend. Therefore, the main reason for high cadmium content in agricultural products resulted from the relatively high content cadmium in soil.