小麦播量与减氮对潮土微生物量碳氮及土壤酶活性的影响
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石柯,董士刚,申凤敏,龙潜,姜桂英,刘芳,刘世亮
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Effects of Wheat Seeding Rate with Nitrogen Fertilizer Application Reduction on Soil Microbial Biomass Carbon, Nitrogen and Enzyme Activities in Fluvo-Aquic Soil in Huang-Huai Plain
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Ke SHI,ShiGang DONG,FengMin SHEN,Qian LONG,GuiYing JIANG,Fang LIU,ShiLiang LIU
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表2 不同时期各指标之间的相关性
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Table 2 The correlation of each index under different treatments in different crop seasons
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时期 Period | 指标 Index | 有机碳 Organic carbon | 全氮 Total nitrogen | SMBC | SMBN | 脲酶 Urease | 蔗糖酶 Invertase | 中性磷酸酶 Neutral phosphatase | 2017年小麦季 Wheat season 2017
| 有机碳 Organic carbon | 1 | | | | | | | 土壤全氮 Total nitrogen | 0.909** | 1 | | | | | | SMBC | 0.702** | 0.797** | 1 | | | | | SMBN | 0.653** | 0.774** | 0.807** | 1 | | | | 脲酶 Urease | 0.790** | 0.714** | 0.615** | 0.446** | 1 | | | 蔗糖酶 Invertase | 0.889** | 0.874** | 0.682** | 0.637** | 0.800** | 1 | | 中性磷酸酶 Neutral phosphatase | 0.595** | 0.430** | 0.057 | -0.139 | 0.605** | 0.550** | 1 | 2017年玉米季 Maize season 2017 | 有机碳 0rganic carbon | 1 | | | | | | | 土壤全氮 Total nitrogen | 0.727** | 1 | | | | | | SMBC | 0.472** | 0.852** | 1 | | | | | SMBN | 0.443** | 0.813** | 0.890** | 1 | | | | 脲酶 Urease | 0.805** | 0.708** | 0.475** | 0.432** | 1 | | | 蔗糖酶 Invertase | 0.857** | 0.769** | 0.605** | 0.518** | 0.797** | 1 | | 中性磷酸酶 Neutral phosphatase | 0.738** | 0.757** | 0.532** | 0.444** | 0.779** | 0.755** | 1 | 2018年小麦季 Wheat season 2018 | 有机碳 Organic carbon | 1 | | | | | | | 土壤全氮 Total nitrogen | 0.785** | 1 | | | | | | SMBC | 0.767** | 0.903** | 1 | | | | | SMBN | 0.683** | 0.849** | 0.919** | 1 | | | | 脲酶 Urease | 0.658** | 0.616** | 0.598** | 0.500** | 1 | | | 蔗糖酶 Invertase | 0.807** | 0.899** | 0.817** | 0.779** | 0.691** | 1 | | 中性磷酸酶 Neutral phosphatase | 0.861** | 0.750** | 0.677** | 0.645** | 0.507** | 0.795** | 1 |
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