几种化学物质对小白菜硝酸盐和亚硝酸盐含量的影响  

Effect of Som e Chemicals on the Content of Nitrate and Nitrite in Chinese Cabbage

作　　者：黄绍宁 沈华山 

机构地区：[1]深圳市农科中心蔬菜所

出　　处：《长江蔬菜》2003年第2期44-45,共2页Journal of Changjiang Vegetables

基　　金：深圳市科技局资助

摘　　要：在三个品种的小白菜试验中,于收获前根外喷施钼酸铵、氯化锰、草酸钾及其混合物,可降低蔬菜中硝酸盐和亚硝酸盐的含量,以喷施混合物的效果较好。喷施甘氨酸对硝酸盐影响不大,但都导致亚硝酸盐的显著提高;收获前3天的喷施效果比前7天的好。The content of nitrate or nitrite was reduced b y spraying(NH 4 ) 2 MoO 4 ,MnCl 2 and K 2 C 2 O 4 ,especial-ly their mixture,before harvesting in three varieties of Chines e cabbage.The effect of glycine on the con tent of nitrate was small but it r esulted in increasing of nitrite content markedly.The effect of spraying3days before harvesting was better than7days before harvesting.

关 键 词：含量 小白菜 硝酸盐 亚硝酸盐 化学物质 微量元素肥料 喷施 

分 类 号：S634[农业科学—蔬菜学]