Effect of biogas slurry and biogas residues on quality of greenhouse mini cucumber

The experiments were conducted to study the biogas residues and biogas slurry on quality of mini cucumber,comparing with chemical fertilizer and manure.The result showed that biogas residue with biogas slurry spraying on the mini cucumber leaves could have a significant role on the quality of cucumber: biogas residue A2 as the base could have a significant role in the aspects of reducing the nitrate of mini cucumber,compared to the CK2 and CK1,the reducing by 14% and 41%.Sprayed biogas slurry on plant leaves the nitrate content of the cucumber could reduce significantly and once sprayed the reducing was about 45%.Sprayed biogas slurry on plant leaves the chlorophyll of A1B1 and A1B2 averagely had increased 89% and the Vc content of A1B2 had increased 77%.After evaluation syntheticly the treatment of A2B2 was the best.During guarantee of high production,the content of Vc reached 48.63 mg/100 g fresh weight and the content of soluble sugar reached 22.16%,and the content of nitrate was only 90.74 mg/kg.