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以黄瓜根际土壤为试材,以土壤添加不同梯度量(5、10、20、40、60t·hm-2)生物炭为处理,以温室土壤不添加生物炭为对照(CK),研究不同梯度量生物炭对黄瓜结果前期、盛期和后期20~40cm土壤碱解氮、速效磷、速效钾、有机碳、全氮含量以及脲酶、蔗糖酶、过氧化氢酶(CAT)活性的影响。结果表明:黄瓜土壤经一定量生物炭处理后,在结果前期、盛期和后期可不同程度提高黄瓜根际20~40cm土壤养分含量和酶活性,并且在结果盛期作用最为显著;20t·hm~(-2)生物炭量处理优于其它处理,与对照相比,在结果前期、盛期和后期,均显著提高黄瓜20~40cm根际土壤碱解氮、速效磷、速效钾、有机碳、全氮含量以及脲酶、蔗糖酶活性。总体而言,施用生物炭能改变黄瓜根际土壤速效养分含量及酶活性,为生物炭在黄瓜生产应用提供指导依据。
The cucumber rhizosphere soils were used as experimental materials, and different amounts of biochar (5, 10, 20, 40 and 60 t · hm-2) were added into the soil to treat them. Effect of Gradient Biochar on Soil Available Nitrogen, Available Phosphorus, Available Potassium, Organic Carbon and Total Nitrogen and Activities of Urease, Sucrase and Catalase (CAT) in 20-40 cm Soil Cultivars in Early, Mid and Late Cucumber Cultivars. The results showed that after a certain amount of biochar treatment, the nutrient contents and enzyme activities of cucumber rhizosphere in the 20-40 cm soil layer increased significantly in the early, middle and late stages of the cucumber growth, with the most significant effect at the peak of the results; 20 t · hm ~ (-2) biochar was superior to other treatments. Compared with the control, the contents of alkaline nitrogen, available phosphorus, available potassium and organic carbon in the rhizosphere soils of 20 ~ 40cm cucumber were significantly increased at the early, , Total nitrogen content and urease, invertase activity. Overall, application of biochar can change the available nutrient content and enzyme activity of cucumber rhizosphere so as to provide guidance for the production and application of biochar in cucumber.