| 杨刚,孙万仓,王丽萍,慕平,刘自刚,李学才,杨宁宁,孔德晶,鲁美宏.北方旱寒区冬油菜不同后茬作物根际与非根际土壤肥力研究[J].干旱地区农业研究,2015,33(3):55~61 |
| 北方旱寒区冬油菜不同后茬作物根际与非根际土壤肥力研究 |
| Study on rhizosphere and non-rhizosphere soil fertilities of different crops after harvest of winter rape in the north dry-cold area |
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| DOI：10.7606/j.issn.1000-7601.2015.03.09 |
| 中文关键词: 冬油菜 后茬作物 土壤肥力 根际与非根际土壤 |
| 英文关键词:winter rape after crop soil of rhizosphere and non-rhizosphere soil fertility |
| 基金项目:国家863高技术研究发展计划（2011AA10A104）；国家公益性行业（农业）科研专项（200903002-04）；现代农业产业技术体系建设专项（CARS-13） |
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| 中文摘要: |
| 以脲酶、过氧化氢酶、蔗糖酶和磷酸酶4种土壤酶活性及土壤理化性状为指标，研究了冬油菜后茬作物油菜、胡麻、玉米和小麦的根际与非根际土壤肥力状况。结果表明，4种作物的根际与非根际土壤肥力差异较大。根际土壤的酶活性与理化性状均显著高于休闲对照，而非根际土壤只有脲酶、有机质含量和速效氮等优于休闲对照。相关性分析表明土壤酶与理化性状之间相关性较大，它们都是评价土壤肥力的重要指标。利用隶属函数法将各土壤肥力分为3级，各处理肥力状况依次为：小麦根际(F=0.72)>胡麻根际(F=0.61)>油菜根际(F=0.56)>玉米非根际(F=0.44)>胡麻非根际(F=0.39)>小麦非根际(F=0.38)>玉米根际(F=0.37)>油菜非根际(F=0.29)>休闲CK(F=0.15)。分析结果表明各项指标采用隶属函数法综合评价冬油菜不同后茬作物根际与非根际土壤肥力是可行的。 |
| 英文摘要: |
| To investigate rhizosphere and non-rhizosphere soil fertilities of different crops after harvest of winter rape, including rape, flax, corn and wheat, activities of four soil enzymes (urease, catalase, invertase and phosphatase) and physicochemical indexes were examined. The results showed that there were considerable differences in rhizosphere and non-rhizosphere soil fertilies among the four crops. Rhizosphere soil enzyme activities and the physicochemical indexes were significantly higher than fallow control. Nevertheless, non-rhizosphere were only superor in urease, available N and organic matter contents. Correlation analysis showed that acitivities of soil enzymes had certain corelationships with physicochemical indexes, both of which were important for evaluations of soil fertilities. In addition, rhizosphere and non-rhizosphere soil fertilities of different corps could be divided into three levels by a subjection function method. The fertility levels of different crops were as the follows: wheat rhizosphere soil(F=0.72)＞flax rhizosphere soil (F=0.61)＞rapeseed rhizosphere soil(F=0.56)＞maize non-rhizosphere soil (F=0.44)＞flax non-rhizosphere soil (F=0.39)＞wheat non-rhizosphere soil (F=0.38)＞maize rhizosphere soil (F=0.37)＞rapeseed non-rhizosphere soil (F=0.29)＞fallow CK(F=0.15). It was concluded that it was feasible to evaluate the soil fertility by using subordinate function method with multiple indexes. |
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