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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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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图4. 不同处理不同时期不同层次土壤全氮含量 |
Fig. 4. Soil total nitrogen content under different treatments in different soil layers and different crop seasons |
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