【摘要】 在江苏省沿江高沙土地区如皋综合试验示范基地进行蔬菜田间试验 ,研究IFC增效微肥对减少小白菜硝酸盐积累的效果。各处理在相同用量磷钾肥和不同用量氮肥的基础上将 30kg·hm-2 的IFC增效微肥拌入蔬菜基肥中一次性施用 ,以不施IFC增效微肥作对照 ,进行成对比较试验。研究表明 :适量施用IFC增效微肥能显著增加蔬菜产量和氮素累积量 ,降低作物体内含氮率和硝态氮含量 ,并降低氮素对土壤及地下水的污染。更多还原

【Abstract】 A plot experiment was conducted in Rugao demonstration base in a region of highly sandy soil along the Changjiang River in Jiangsu Province to investigate effects of IFC-microelement fertilizer on yield and nitrate accumulation of Chinese cabbage. The plots in the experiment all received the same rate of phosphorus and potassium but different rate of nitrogen, combined with or without additional IFC-microelement fertilizer (30 kg·hm -2 ). The experiment shows that the application of IFC-microelement fertilizer at an appropriate rate increased yield and nitrogen accumulation of the crop but decreased nitrogen and nitrate contents in the crop, and nitrogen contamination of the soil and ground water as well.更多还原