Effect of Application of Biogas Slurry on the Chinese Cabbage Yield and Quality under Soil-less Cultivation

[Objective]The effect of the application of the biogas slurry and chemical fertilizer on Chinese cabbage(Brassica chinensis L.) yield and quality was studied.[Method]Under the condition of soilless cultivation,the orthogonal test in the biogas slurry as a nutrient liquidbased solution affecting Chinese cabbage was conducted.[Results]The Chinese cabbage yield was the highest with the weight of 10.6 g/plant in the treatment of biogas slurry of 250 ml/L as nutrient liquid fertilizer mixed with 3 g urea,2 g potassium dihydrogen phosphate and 1g calcium chloride,2 g magnesium sulfate and 2 ml trace element.Compared with the CK that contained the chemical fertilizer,its good-quality index:the content of nitrate nitrogen,Vc,soluble sugar and chlorophyll did not vary;the content of Fe,Zn,Cu and Mn was significantly increased,while the content of Cd and As was significantly lower than the value required in the national standard on the green leafy vegetable [NY/T743-2003].[Conclusion]The rational application of biogas slurry in cabbage cultivation had a positive effect on the improvement of its yield and quality.