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| Effect of Different Water and Fertilizer Supply on Wild Cabbage Yield，Quality， Water and Fertilizer Use Efficiency |
| ZHOU Ya-Ting, ZHANG Guo-Bin, LIU Hua, WANG Fu-Guo, YUAN Xiao-Lin, YU Ji-Hua |
| 1Economic Crops Technology Extension Stations of Gansu Province， Lanzhou 730030， Gansu， China； 2Horticulture College， Gansu Agricultural University， Lanzhou 730070， Gansu， China |
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Abstract Taking wild cabbage（ Brassica oleracea L. var. capitata L.） cultivar ‘Jingyu No.1’as test material，studied the effects of different water and fertilizer supplies on yield，quality，water and nitrogen use efficiencies of wild cabbage cultivated in north west area of China．The results showed that compared with the tranditional irrigation，10% irrigation（1 960 m3·hm-2）were reduced，20% fertilizer（N 304 kg·hm-2，P2O4 kg·hm-2，K 72 kg·hm-2）were saved，the contents of VC，soluble sugar and free aminoacid of wild cabage in the treatment were higher，while the nitrate content was lower．The treatment was significantly superior than the local tradition irrigation and fertilizer treatments．The water use efficiency was higher and apparent nitrogen use efficiency was the highest．The economic yield and biomass yield was 91 t·hm-2 and 132 t·hm-2，respectively．
Although there were no significant differences with the local tradition irrigation and fertilizer treatment，it had the advantages of saving water，saving fertilizer，and protecting environment．Comprehensive evaluation indicated that this combined treatment could reduce 10% irrigation and save 20% fertilizer，was a better water and fertilizer supplying scheme appropriate for local wild cabbage growth and fit to be extended in areas with similar conditions．
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Received: 13 April 2014
Published: 11 June 2014
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