尿素配施氯化铵对菜薹硝酸盐积累的影响  

Effect of Ratio of Urea to Ammonium Chloride on Nitrate Content in Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee

作　　者：苏天明[1] 顾明华[2] 黎晓峰[2] 覃凝[2] 韦瑞邓[2] 靳亚忠[3] 

机构地区：[1]广西农业科学院土壤肥料研究所 [2]广西大学农学院 [3]黑龙江八一农垦大学植物科技学院

出　　处：《中国蔬菜》2005年第9期7-9,共3页China Vegetables

基　　金：广西自然科学基金(0144019);广西农业科学院科技发展基金(2004016);广西"十百千人才"资金〔(2003)33〕

摘　　要：利用盆栽试验研究尿素配施不同比例的氯化铵对菜薹(菜心)硝酸盐积累的影响,结果表明:氯化铵能显著减少栽培基质中亚硝酸细菌的数量,抑制硝化作用的进行。尿素与氯化铵配合施用能显著降低菜心硝酸盐含量,降低效应随着配施氯化铵比例的增加而增加。The study of the effect ot urea-ammonium chloride mixture on the nitrate content in Brassica campestrts L. ssp. chinensis var. utilis Tsenet Lee was carried out. The results are as follows ： The application of urea-ammonium chloride mixture significantly Educed nitrate content in Brassica campestris L. ssp. chinensis var. utilis Tsenet Lee. The nitrate content in the plant decreased continuously with the increase of ammonium chloride rate. Ammonium chloride significantly reduced the number of nitrous acid bacteria and consequently inhibited nitrification in growing media.

关 键 词：菜薹 硝酸盐积累 氯化铵 尿素 施肥技术 

分 类 号：S634.5[农业科学—蔬菜学]