Application Of Biogas Liquid And Residue To Vegetable Soilless Culture

This experiment was using biogas liquid and biogas residue as the nutrient solution and the nutrient medium and with organic substrate tegether to cultivate Cabbage , Lettuce and green peppers . The results showed that this cultivation way is feasible.1. Cabbage and Lettuce,which cultivated by using biogas liquid, were growth well. From several morphological characters, the leaf length, leaf width, plant height and single plant fresh weight all were increased in various degrees, especially the single plant fresh weight was increased most obviously. In the cabbage cultivation, the single plant fresh weight of treatment T1 was the biggest,it was 45.08g and increased by 23.9% than treatment CK1. In the lettuce cultivation, the single plant fresh weight of treatment T2 was the biggest,it was 65.24g and increased by 227.0% than treatment CK1.From several physiological characters,Biogas Liquid can improve Vc and chlorophyll content of cabbage and lettuce, reduce the nitrate content of cabbage and lettuce. By comprehensive consideration,The effect of treatment T3 was the best in the cabbage cultivation, and the effect of treatment T2 was the best in the lettuce cultivation. Green peppers growth very well in biogas liquid cultivation. From several morphological characters,the fruit length and fruit thick were increased in various degrees , that was beneficial to the improvement of the yield. From several physiological characters, biogas liquid can significantly improve fruit Vc, soluble solids, soluble sugar content and lower nitrate content, but fruit titratable acid content improvement is not significant, so the fruit flavors of pepper and the impact is not obvious. By comprehensive consideration,The effect of treatment T4 was the best.2. Cabbage was growth well,which cultivated by using biogas residue. From several morphological characters, the leaf length, leaf width, plant height and single plant fresh weight all were increased in various degrees, especially the single plant fresh weight and leaf length were increased most obviously. In the cabbage cultivation, the single plant fresh weight of treatment R3 was the biggest,it was 46.75g and increased by 28.5% and 235.4% than treatment CK1 and treatment CK2;and the leaf length of treatment R3 was the biggest, it was 12.10cm and increased by 12.0% and 19.2% than treatment CK1 and treatment CK2. From several physiological characters,biogas residue can improve Vc and chlorophyll content of cabbage , and also can improve the nitrate content of cabbage ,that goes against the improvement of cabbage quality . By comprehensive consideration,The effect of treatment R2 was the best in the cabbage cultivation. Lettuce was growth well,which cultivated by using biogas residue. From several morphological characters, the leaf length, leaf width, plant height and single plant fresh weight all were increased in various degrees, especially the single plant fresh weight was increased most obviously. In the lettuce cultivation, the single plant fresh weight of treatment R3 was the biggest,it was 52.25g and increased by 161.9% and 181.5% than treatment CK1 and treatment CK2. From several physiological characters,biogas residue can improve Vc and chlorophyll content of cabbage , reduce the nitrate content of lettuce. By comprehensive consideration,The effect of treatment R3 was the best in the cabbage cultivation. Green peppers growth very well in biogas residue cultivation. From several morphological characters,the fruit length and fruit thick were increased in various degrees,that was beneficial to the improvement of the yield. From several physiological characters, biogas residue can significantly improve fruit Vc, soluble solids, soluble sugar content and lower nitrate content, but fruit titratable acid content improvement is not significant, so the fruit flavors of pepper and the impact is not obvious. By comprehensive consideration,The effect of treatment R1 was the best.