氮肥对鸡毛菜硝酸盐积累及其酶活性的影响  

Effects of Nitrogen Fertilizer on Nitrate Accumulation and Reductase Activity of Chinese Cabbage

作　　者：张百俊[1] 杨和连[1] 杨东平[2] 

机构地区：[1]河南科技学院,河南新乡453003 [2]河南省教育厅职教研究室,河南郑州450003

出　　处：《贵州农业科学》2009年第9期189-191,共3页Guizhou Agricultural Sciences

基　　金：河南省科技攻关项目"绿色蔬菜生产综合配套技术研究"(0424040012)

摘　　要：为了对无公害蔬菜生产科学施肥提供理论依据,进行了不同施肥处理对鸡毛菜生物量、硝酸盐含量及硝酸还原酶活性的影响试验。结果表明,鸡毛菜生物量、硝酸盐含量及硝酸还原酶活性均随施肥量的增加而增加,其中,当施肥量超过0.3 g/盆时生物量开始下降,而硝酸盐含量却大幅度上升。氮肥施用量以22.5 kg/667m2为宜。A Chinese cabbage variety(605) was tested under different nitrogen application amount to study the effects on its biomass,nitrate content and nitrate reductase activity and to provide a theoretical reference for production of pollution-free vegetable.The results showed that the biomass,nitrate content and nitrate reductase activity increase with increment of nitrogen application amount,and the biomass decreases and nitrate content increases by a large margin when nitrogen application amount is 0.3 g/pot.The optimum nitrogen application amount is 22.5 kg/667m2 in production of pollution-free vegetable.

关 键 词：氮肥 鸡毛菜 硝酸盐 硝酸还原酶活性 

分 类 号：S634.3[农业科学—蔬菜学]