应用生态学报2009，Vol.20Issue(7)：1678-1684,7.
水肥处理对黄瓜土壤养分、酶及微生物多样性的影响
Effects of different water and fertilizer supply on cucumber soil nutrient content, enzyme activity, and microbial diversity
摘要
Abstract
With cucumber (Cucumis sativus L.) variety Jinyou 1 as test material, a greenhouse experiment was conducted to study the effects of different water and fertilizer supply on the cucumber soil nutrient content, enzyme activity, and microbial diversity. Three water regimes (50%-60%, 70%-80%, and 90%-100% soil relative moisture content) and two fertilization practices (600 kg N·hm-2 + 420 kg P2O5·hm-2 and 420 kg N·hm-2+294 kg P2O5·hm-2) were designed. The increase of water and fertilizer supply benefited the increase of soil available P content and sucrase activity. Increasing fertilization rate increased soil NH4+-N content but decreased soil protease activity, and increasing soil relative moisture content decreased the soil NH4+-N content and urease activity. Soil microbial diversity had no significant correlations with soil nutrient contents, but significantly positively correlated with soil urease activity and negatively correlated with soil sucrase activity. Among the treatments, the treatment 70%-80% soil relative moisture content + 600 kg N·hm-2 and 420 kg P2O5·hm-2 had the highest soil nutrient contents, soil urease, sucrase, and phosphatase activities, and soil microbial diversity and evenness, being the best in soil potential productivity.关键词
水肥耦合/土壤酶/Shannon-Wiener指数/均匀度Key words
water and fertilizer coupling/ soil enzyme/ Shannon-Wiener index/ evenness.分类
农业科技引用本文复制引用
韦泽秀,梁银丽,井上光弘,周茂娟,黄茂林,古建锋,吴燕..水肥处理对黄瓜土壤养分、酶及微生物多样性的影响[J].应用生态学报,2009,20(7):1678-1684,7.基金项目
中国科学院知识创新工程项目(KZCX2-XB2-05-01)和中日合作JSPS"中国内陆沙漠化防治及农业替代技术研究"项目资助. （KZCX2-XB2-05-01）
