| 不同施肥措施对玉米根际土壤微生物数量及养分含量的影响 |
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| 引用本文： | 刘苗,孙建,李立军,刘景辉,张星杰.不同施肥措施对玉米根际土壤微生物数量及养分含量的影响[J].土壤通报,2011(4). |
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| 作者姓名： | 刘苗 孙建 李立军 刘景辉 张星杰 |
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| 作者单位： | 内蒙古农业大学农学院; |
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| 基金项目： | 内蒙古自然科学基金项目(200607010311) |
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| 摘 要： | 通过田间试验,研究了不同施肥措施对根际土壤微生物数量及养分含量的影响。结果表明:(1)施肥显著提高了根际土壤微生物数量。在玉米生育期内土壤细菌和放线菌数量平均数量表现为MNP(有机肥+N+P)>M(有机肥)>NP(N+P)>CK(对照),与CK相比,MNP、M和NP处理细菌数量分别提高了302.82%、183.96%和136.23%,而放线菌数量则分别提高了93.97%%、62.64%和54.28%。土壤真菌平均数量表现为MNP>NP>CK>M,其中MNP和NP分别比CK提高了33.74%和29.08,而M则比CK降低了8.39%。土壤好气性固氮细菌平均数量表现为MNP>NP>M>CK,MNP、M和NP分别比CK提高了55.46%、24.63%和40.87%。(2)在玉米收获期土壤有机质和各营养指标含量均比播种期降低,不同施肥处理土壤有机质含量在播种期和收获期均表现为M>MNP>CK>NP,而土壤全氮、全磷、全钾、碱解氮和速效磷含量在播种期表现为MNP>NP>M>CK,在收获期表现则不尽一致。(3)土壤细菌、放线菌和固氮菌数量均与土壤全氮、全磷和碱解氮含量之间有显著正相关关系(P<0.05),土壤真菌数量与土壤有机质及各养分含量之间相关性较差。
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| 关 键 词： | 施肥措施 饲用玉米 微生物数量 土壤养分 |
Effect of Fertilizer Treatments on Soil Microbe Amount and Nutrition Content in Rhizosphere of Silage Maize |
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| LIU Miao,SUN Jian,LI Li-jun,LIU Jing-hui,ZHANG Xing-jie.Effect of Fertilizer Treatments on Soil Microbe Amount and Nutrition Content in Rhizosphere of Silage Maize[J].Chinese Journal of Soil Science,2011(4). |
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| Authors: | LIU Miao SUN Jian LI Li-jun LIU Jing-hui ZHANG Xing-jie |
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| Institution: | LIU Miao,SUN Jian,LI Li-jun,LIU Jing-hui,ZHANG Xing-jie(College of Agronomy,Inner Mongolia Agriculture University,Huhhot 010018,China) |
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| Abstract: | According to the test in the field,effects of different fertilizer treatments on soil microbe amount and soil nutrition content in rhizosphere of silage maize were investigated.The results indicated that the soil microbe amount increased significantly in fertilizer treatments.In the stage of silage maize,the average amounts of soil bacteria and actinomycetes represented:(1) MNP(Organic fertilizer + Chemical fertilizer) > M(Organic fertilizer) > NP(Chemical fertilizer) > CK(Control).Compared with CK treatmen... |
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| Keywords: | Fertilizer measures Silage maize Microbe amount Soil nutrition |
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