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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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混作在黄土母质生土改良中的应用
DOI: 10.3724/SP.J.1145.2011.00388, PP. 388-392
Keywords: 混作,黄土母质生土,土壤改良,土壤微生物,土壤酶,土壤营养
Abstract:
以黄土母质生土为供试土壤，采用盆栽试验，研究小麦与3种豆科牧草及油菜混作对根际土壤生物活性及土壤营养的影响.结果表明，黄土母质生土混作较单作可显著促进根际土壤微生物的繁衍、酶活性及土壤营养的提高，且在混作根土系统中，三大微生物种群数量、多种土壤酶活性以及土壤n、p、有机质营养之间均存在显著或极显著的正向相关关系.4种混作处理以豌/麦根际土壤综合效应较好，可作为生土改良的首选混播作物.结果还显示，在小麦生长期内，混作根际微生物数量与酶活性及根际土壤营养均随生育进程呈前低―中高―后低的抛物线变化.研究为混作复合群体应用于黄土母质生土地改良提供了理论参考.图3表1参23
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