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| Effects of Different Ratios of Residue-to-compound Fertilizer on Yield，Quality of Pakchoi and Soil Fertility |
| LI Yu1，JIANG Fang-ling1，MING Cun-hao1，GU Hai-ming2，WU Zhen1* |
| 1College of Horticulture，Nanjing Agricultural University，Nanjing 210095，Jiangsu，China；2Changshu City Haiming Modern Agriculture Development Co．Ltd.，Changshu 215500，Jiangsu，China |
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Abstract Using pakchoi〔Brassica campestris L. ssp. chinensis（L.）Makino var. communis Tsen et Lee〕‘Zaoshengjinhua’as material，this experiment studied the effects of different ratios residue-to-compound fertilizer on the growth，yield and quality of pakchoi and soil fertility．The results showed that using appropriate proportion of residue to instead the basal fertilizer，the indexes of growth and the yield of the plants were much better than by using fertilizer alone．Compared with using fertilizer alone，the soluble sugar，VC and soluble protein contents of pakchoi were significantly increased|while its nitrate content decreased significantly．Adding appropriate proportion of residue to basal fertilizer could increase the contents of organic matter，total nitrogen，total phosphorus，total potassium in soil．This study indicates that adding appropriate proportion of residue to instead compound fertilizer can promote the growth of pakchoi，improve its quality，and increase soil fertility．In this experiment，the treatments of 40% residue + 60% fertilizer has the best effect.
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Received: 05 April 2012
Published: 21 June 2012
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