不同安全利用技术措施及其组合对轻中度镉污染水稻田修复治理效果的试验研究

Experimental Study on the Remediation Effect of Different Safety Utilization Technical Measures and Combinations on Light to Moderate Cadmium Contaminated Rice Fields

为降低镉元素在水稻中的富集,提高受污染耕地的安全利用率,稳步提升耕地环境安全和农产品质量安全保障水平,借鉴现行耕地安全利用技术措施,开展了轻中度镉污染水稻田的修复治理试验。试验共设置低积累水稻品种、土壤调理剂、叶面阻控剂、低积累水稻品种+水分调控+叶面阻控剂、低积累水稻品种+土壤调理剂等5个试验区,分别测定了不同技术措施及其组合处理的水稻农艺性状、镉含量等指标。结果表明:适宜种植的低积累水稻品种为甬优1540、甬优4949、甬优15和甬优2640,推荐施用的土壤调理剂、叶面阻控剂分别为富态威田美(颗粒)、绿珑硒;各单项技术措施的组合使用,有较好的镉治理效果。

In order to reduce the enrichment of cadmium in rice,improve the safe utilization rate of polluted farmland,steadily enhance the environmental safety of farmland and the quality and safety guarantee level of agricultural products,and draw on the current technical measures for safe utilization of farmland,a remediation experiment is carried out for light to moderate cadmium contaminated rice fields.The experiment set up five experimental areas,including low accumulation rice varieties,soil conditioners,foliar inhibitors,low accumulation rice varieties+water regulation+foliar inhibitors,and low accumulation rice varieties+soil conditioners.The agronomic characters and cadmium content of rice treated with different technical measures and those combinations are measured separately.The results show that the suitable low accumulation rice varieties for planting are Yongyou 1540,Yongyou 4949,Yongyou 15,and Yongyou 2640.The recommended soil conditioner and foliar inhibitor for application are Futaiweitianmei(granules)and Lülongxi,respectively.The combination of various individual technical measures has a good cadmium treatment effect.