ACTA AGRICULTURAE BOREALI-SINICA ›› 2011, Vol. 26 ›› Issue (S1): 113-116. doi: 10.7668/hbnxb.2011.S1.024

Special Issue: Saline-alkali stress

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Effects of Nitrogen-free Hydroponic Solutions on Nitrate and Vitamin C Content in Lettuce Grown Hydroponically

LIU Wen-ke, YANG Qi-chang, QIU Zhi-ping   

  1. Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Key Lab. for Agro-Environment & Climate Change, Ministry of Agriculture, Beijing 100081, China
  • Received:2011-04-09 Published:2011-12-30

Abstract: A greenhouse experiment was conducted to investigate the effects of three kinds of nitrogen-free hydroponic solutions on vitamin C contents in expanded leaves and old leaves after six-day treatment.The results showed that nitrogen-disruption treatments altered the vitamin C content in expanded leaf blades,but not the petioles and old leaves.Distilled water treatment increased the vitamin C content in expanded leaf blades,but nitrogen-free nutrient solution decreased the vitamin C content in expanded leaf blades.In addition,three nitrogen-free solutions did not affect the vitamin C content in expanded leaf petioles and old leaves.The vitamin C content in expanded leaf blades was higher than old leaves,and that in old leaves was higher than expanded leaf petioles.All nitrogen-free solutions decreased the nitrate contents in expanded leaf blades,petioles and old leaves.KCl solution was more efficient than other treatments.The decline extent of nitrate content followed the sequence of expanded leaf blades petioles old leaves.

Key words: Nitrogen-disruption treatment, Lettuce, Nitrate, Vitamin C, Petiole

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Cite this article

LIU Wen-ke, YANG Qi-chang, QIU Zhi-ping. Effects of Nitrogen-free Hydroponic Solutions on Nitrate and Vitamin C Content in Lettuce Grown Hydroponically[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(S1): 113-116. doi: 10.7668/hbnxb.2011.S1.024.

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