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| Effects of Different Ammonium and Nitrate Ratios on Yield and Quality of Chinese Kale |
| ZHONG Li-hua，SONG Shi-wei，LIU Hou-cheng，SUN Guang-wen，CHEN Ri-yuan* |
| College of Horticulture，South China Agriculture University，Guangzhou 510640，Guangdong，China |
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Abstract The effects of different ammonium and nitrate ratios（CK：0/100，T1：15/85，T2：30/70，T3：45/55）on yield and quality of Chinese kale（Brassica albograbra L.H.Bailey）were studied in nutrient solution culture．The results showed that the growth of Chinese kale was significantly improved by T2 and T3 treatments，comparing with the control（CK）treatment．The quality of Chinese kale was improved in all ammonium enhancement treatments，in which T2 treatment had the highest contents of VC，soluble sugar and soluble protein．But the quality decreased in T3 treatment．Nitrate content was significantly reduced by ammonium enhancement treatments and it decreased with the increase of ammonium and nitrate ratios．Considering yield and quality，T2 treatment is more suitable for Chinese kale growth.
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Received: 01 November 2011
Published: 10 February 2012
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