南方农业学报2011，Vol.42Issue(10)：1233-1237,5.
腐植酸钠对镉胁迫小麦幼苗的生物效应
Biological effects of different sodium humate application modes on Cd-stressed wheat seedlings
摘要
Abstract
[Objective]The physiological role of the sodium humate in imparting resistance to heavy metal stress in wheat seedlings was explored by applying sodium humate in cadmium (Cd) stressed soil. [ Method ]Different methods of sodium humate application, viz., seeds soaking, irrigation and soil amendment were used to stndy their effects on growth and development of wheat seedlings under Cd stress conditions, and the absorption and accumulation of Cu, Zn, Fe, Mn and Cd were investigated. [Results]The application of sodium humate promoted the growth and development of wheat seedlings, relieved the toxicity of Cd and increased the dry matter accumulation in wheat seedlings. Amendment of sodium humate with soil gave the best results. Different modes of soidum humate application significantly reduced Cd accumulation in wheat seedlings and promoted the absorption and accumulation of Cu, Zn, Fe and Mn. The efficiency of different application modes reduced gradually with increase in severity of Cd stress. [ Conclusion ]The studies revealed that application of sodium humate increased the yield of wheat by providing tolerance to Cd toxicity, therefore, it may be used as eco-friendly soil amendment in Cd stressed soils for sustaining productivity.关键词
腐植酸钠/镉胁迫/小麦/生物效应Key words
sodiume humate/ fertilization mode/ Cd stress/ wheat/ biological effect分类
农业科技引用本文复制引用
任学军,杜彬,任艳军,董立峰,马建军..腐植酸钠对镉胁迫小麦幼苗的生物效应[J].南方农业学报,2011,42(10):1233-1237,5.基金项目
河北省自然科学基金项目(C2005000502) （C2005000502）
河北秦皇岛市科技支撑项目(201101A184) （201101A184）
