利用蔬菜奢侈吸锌提高其营养价值的研究  

Studies on Improving Nutritive Value of Vegetables Using Their Luxury Zinc Absorption

作　　者：吴金桂[1] 宁运旺[1] 刘文龙[1] 娄德仁 陆小龙[1] 蒋永忠[1] 

机构地区：[1]江苏省农业科学院土壤肥料研究所,扬州大学农学院中心分析室

出　　处：《江苏农业学报》1995年第1期49-53,共5页Jiangsu Journal of Agricultural Sciences

摘　　要：研究了二十多种蔬菜及其它作物锌的奢侈吸收。试验结果表明：在提高施锌量条件下供试作物对锌有不同程度的奢侈吸收；蔬菜可食部位含锌量的提高程度取决于其所属器官种类，一般叶部较高；蔬菜对锌的忍耐程度及可食部位含锌量主要与蔬菜种类有关；正常生长时蔬菜吸收的锌主要分布于幼嫩部分，奢侈吸收时新老组织含锌量同步增加；奢侈吸收条件下蔬菜吸收多余的锌不一定分布于其可食部位，各部位的含锌浓度一般为根＞茎、叶＞果实；通过增加锌肥用量，可使蔬菜具有数倍至数十倍于普通蔬菜含锌量的奢侈含锌量，从而达到提高其营养价值的目的。The characteristics of luxury zinc absorption of more than twenty vegetables and other crops were studied.The results are summarized as follows.①The potential capacity of luxury zinc absorption(the ratio of the highest zinc content to the lowest in the edible parts when plant grows normally and zinc application increases gradually)depends on the organ which is edible.②The tolerance of vegetable plants to zinc fertilizers and the zinc content in the edible plant parts are mainly concerned with vegetable species and varieties.③The luxury zinc absorbed by a vegetable plant are not necessarily concentrated in its edible parts,but distributed in different parts in order of root>stem and leaf>fruit.④During luxury absorption,zinc content in new or old tissues of a vegetable plant Increased almost at the same pace.⑤By increasing zinc fertilizer application,it is possible to enhance the zinc content in plants by several to several dozens of times over usual plant zinc content,and thus improve the nutritive value.

关 键 词：吸收 锌 蔬菜 营养价值 

分 类 号：S630.1[农业科学—蔬菜学]