摘要
采用池栽方式,以北京553为试材,研究了腐植酸对甘薯块根硝酸盐积累的影响。结果表明,施用腐植酸降低了甘薯块根中硝酸盐含量,提高了前、中期功能叶片硝酸还原酶活性和块根中全氮含量,降低了收获期块根全氮含量,提高了块根和叶片中谷氨酰胺合成酶活性。
The sweet potato cuhivar Beijing 553 was used to study the effects of humic acid （HA） on the nitrate accumulation in tuberous root under pool culture. The results showed that the application of HA re- duced the nitrate content and the total nitrogen content in harvest time in sweet potato roots, but increased the nitrate reductase activity and total nitrogen of tuberous roots in early - middle period and the glutamine syn- thetase （GS） activity of functional leaves.
出处
《山东农业科学》
2013年第4期68-70,74,共4页
Shandong Agricultural Sciences
基金
山东省科技攻关项目(2011GNC11309)
国家甘薯产业技术体系北方薯区栽培岗位科学家资助
关键词
腐植酸
甘薯
硝酸盐
氮代谢
氮代谢酶
Humic acid
Sweet potato
Nitrate
Nitrogen metabolism
Nitrogen metabolism enzymes
