| 连续不同施氮对小麦-玉米轮作农田土壤理化性状的影响 |
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| 引用本文： | 安志超,黄玉芳,马晓晶,李 帅,师海彬,叶优良.连续不同施氮对小麦-玉米轮作农田土壤理化性状的影响[J].麦类作物学报,2017(11):1461-1466. |
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| 作者姓名： | 安志超 黄玉芳 马晓晶 李 帅 师海彬 叶优良 |
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| 作者单位： | （1.河南农业大学资源与环境学院，河南郑州 450002； 2.陕西省渭南市农技推广中心，陕西渭南 715500） |
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| 基金项目： | 国家自然科学基金项目（31471935） |
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| 摘 要： | 为明确施氮量对农田土壤理化形状的影响,以小麦-玉米轮作体系为研究对象,通过4年连续定位试验,比较了连续不同施氮处理对不同土层土壤理化指标的影响。结果表明,连续不同施氮处理对土壤有机质和全氮含量、碳氮比、土壤容重有显著影响,但对pH的影响较小。在0~30cm土层,土壤有机质和全氮含量随施氮量的增加而增加,当施氮量为240kg·hm~(-2)时,有机质含量增加速率最快,当施氮量为360kg·hm~(-2)时,土壤全氮含量最高。在30~60cm和60~90cm土层,不同施氮处理对土壤有机质、全氮含量的影响降低。综合土壤碳氮比和容重等指标,本区域推荐施氮量为240kg·hm~(-2)。
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| 关 键 词： | 小麦-玉米轮作 有机质 全氮 碳氮比 土壤容重 土壤pH |
Effect of Different Continuous Nitrogen Application on Soil Physicochemical Properties in Wheat-Maize Rotation System |
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| AN Zhichao,HUANG Yufang,MA Xiaojing,LI Shuai,SHI Haibin,YE Youliang.Effect of Different Continuous Nitrogen Application on Soil Physicochemical Properties in Wheat-Maize Rotation System[J].Journal of Triticeae Crops,2017(11):1461-1466. |
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| Authors: | AN Zhichao HUANG Yufang MA Xiaojing LI Shuai SHI Haibin YE Youliang |
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| Abstract: | To discuss the effect of nitrogen application rate on soil quality,a 4-year continuous positioning test was conducted in wheat-maize rotation system,comparing the changes of soil physical and chemical indices in different soil layers under the continuous nitrogen application. The results indicated that different continuous nitrogen application rate had significant effect on soil organic matter,total nitrogen,C/N ratio and soil bulk density,while it had little effect on soil pH. In 0-30 cm soil layer,soil organic matter and total nitrogen content was increased with the increasing of nitrogen application rate. When the nitrogen application rate reached 240 kg·hm-2,soil organic matter content increased the fastest,and when the nitrogen application rate was 360 kg·hm-2,soil total nitrogen content was the highest. In 30-60 cm and 60-90 cm soil layers,the effects of different nitrogen treatments on soil organic matter and total nitrogen content were decreased. According to soil nitrogen and carbon ratio and bulk density,nitrogen fertilizer in this region is recommended as 240 kg·hm-2. |
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| Keywords: | Wheat-Maize rotation Soil organic matter Total nitrogen C/N ratio Soil bulk density Soil pH |
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