氮磷钾肥对茎瘤芥产量和硝酸盐的影响  

Effects of the N,P_2O_5 and K_2O Fertilizer in Tumorous Stem Mustard on Yield and Content of Nitrate

作　　者：张召荣[1] 李昌满[2] 刘义华[1] 范永红[1] 赵守忠[1] 肖莉[1] 

机构地区：[1]重庆市涪陵区农业科学研究所,重庆涪陵408000 [2]长江师范学院生命科学系,重庆涪陵408000

出　　处：《西南农业学报》2009年第3期712-715,共4页Southwest China Journal of Agricultural Sciences

基　　金：重庆市教委科技项目(kj071309)

摘　　要：采用田间试验和化验分析的方法,研究了不同氮、磷、钾施用水平下,茎瘤芥各器官产量和硝酸盐含量变化特征。结果表明,瘤茎产量与氮、磷、钾施用量均呈极显著二次回归关系;瘤茎硝酸盐含量与施氮量呈极显著正相关,施磷量(P2O5)在55.8 kg/hm2、施钾量(K2O)在133.5 kg/hm2范围内,增施磷、钾肥可提高瘤茎产量而降低硝酸盐含量。茎瘤芥无公害生产上,应控制氮、磷用量,适当增施钾肥。The methods of field experiment and assay analysis were used to study the variation characteristic of Tumorous stem mustard yield and Nitrate under the different levels of N,P2O5 and K2O fertilizer. The results showed：there existed significantly quadratic regression between the tumorous stem yield and dosage of N ,P2O5 and K2O fertilizer. There was highly significant positive correlation between content of tumorous stem nitrate and dosage of N fertilizer. With increase of the dosage of P2O5 and K2O fertilizer under the levels of 55.8 kg P2O5 fertilizer/hm^2 and 133.5 kg K2O fertilizer/hm^2 ,tumorous stem yield would increase and content of nitrate lower. In the harmless cultivation of tumorous stem mustard,N and P2O5 fertilizer should be controlled and K2O could be properly increased .

关 键 词：茎瘤芥 氮磷钾 产量 硝酸盐 

分 类 号：S147.2[农业科学—肥料学] S637.3[农业科学—农业基础科学]