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《Anhui Agricultural Science Bulletin》 2007-23
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Effects of Different Levels of Nitrogen Element on the Nitrate Accumulation of Lettuce

Lianhua Maguangshu Wangmingchi(College of plant science and technology,Heilongjiang August First Land Reclamation University,163319)  
In the experiment,the Lettuce was used as experimental material,adopted the way of substrate culture to study the effects of Nitrogen element different supply levels on the nitrate accumulation of Lettuce.The results showed that with the supplying level of Nitrogen element increased,nitrate content,activity of Nitrate Reductases and single output increased continuously under experimental condition;after the total nitrogen supplying level surpassed 3.2mmol/L(N3),the nitrate content surpassed edible margin for safety,therefore the total nitrogen supplying level take 3.2mmol/L(N3)as suitable.
【Fund】: 黑龙江省教育厅科研课题“无土栽培蔬菜硝酸盐累积规律及其营养调控技术研究”(10551223)
【CateGory Index】: S636.2
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