碘肥对富碘蔬菜菠菜品质的影响

Influence of Iodine Fertilizer on Ouality of Iodine-enriched Vegetables Spinach

[目的]研究不同浓度(0～4 mg/kg)和不同形态的碘(碘离子和碘酸根离子)对菠菜地上可食部分(叶)中VC含量和硝酸盐含量的影响。[方法]开展菠菜盆栽试验。[结果]施用碘酸钾处理对菠菜地上可食部分生物量影响达0.05显著水平。施用碘化钾影响不明显,并且低浓度碘可促进菠菜生长,高浓度碘则抑制菠菜的生长。不同浓度的碘对菠菜叶中VC含量和硝酸盐含量无明显影响。在碘酸根离子处理条件下,菠菜叶中VC和硝酸盐含量高于碘离子处理。[结论]研究结果可为富碘蔬菜的栽培和筛选提供理论依据。

[Objective] The research aimed to study the effects of different iodine concentrations（0-4 mg /kg） and different iodine forms（iodide and iodate） on the amount of vitamin C and nitrate of edible part of spinach.[Method]Pot cultivation experiment was carried out.[Result] The application of potassium iodate had a significant influence on the aerial edible part growth of spinach,while there was no significant effect for potassium iodide.Furthermore,the low concentration of iodine could promote the growth of spinach,and the high concentration of iodine inhibited the growth of spinach.Although there were no significant effects of iodine concentration on the amount of vitamin C and nitrate of leaves of spinach,iodate had greater effect compared with iodide.[Conclusion]The results could provide the theoretical foundation for the cultivation and selection of iodine-enriched vegetables.