| 太仓菜地土壤硝态氮状况 |
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| 引用本文： | 王霞,董元华,王辉,安琼,郭宗祥.太仓菜地土壤硝态氮状况[J].土壤,2004,36(1):68-70. |
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| 作者姓名： | 王霞 董元华 王辉 安琼 郭宗祥 |
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| 作者单位： | 1. 中国科学院南京土壤研究所,南京,210008
2. 江苏省太仓市土肥站,太仓,215400 |
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| 基金项目： | 江苏省环境保护厅重点项目"江苏省典型地区土壤环境质量状况探查研究"(2002012)、"江苏省农产品清洁生产创新研究与实施"项目和中国科学院知识创新工程重要方向性项目"我国东南地区高度集约化农业利用下土壤退化的机制及合理调控"(KZCX3-SW-417)资助. |
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| 摘 要： | 本文研究了不同种植制度对农田土壤NO3--N含量的影响。结果表明,由于管理方式不同,大棚蔬菜地土壤中NO3--N明显高于其它管理方式下的土壤,NO3--N含量依次为:大棚蔬菜地>露天蔬菜地>传统菜地>稻田。此外,大量的N肥投入带来了土壤pH的改变。土壤pH(y)值与土壤NO3--N含量(x)呈线性负相关(y = -9.961x 98.095 R2 = 0.151 n=84),经统计检验相关性达极显著水平。 -
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| 关 键 词： | 土地利用 土壤 NO3--N pH |
NITRIC NITROGEN IN VEGETABLE SOILS IN TAICHANG |
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| WANG Xi,DONG Yuan-hu,WANG Hui,AN Qiong and GUO Zong-xiang.NITRIC NITROGEN IN VEGETABLE SOILS IN TAICHANG[J].Soils,2004,36(1):68-70. |
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| Authors: | WANG Xi DONG Yuan-hu WANG Hui AN Qiong and GUO Zong-xiang |
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| Institution: | WANG Xia1 DONG Yuan-hua1 WANG Hui1 AN Qiong1 GUO Zong-xiang2 |
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| Abstract: | The effects of different cropping systems on content of nitric nitrogen in soils were studied. The results indicated that, there is more nitric nitrogen in vegetable soils in green-houses, followed by opened vegetable soils, and then traditional vegetable soils, the lowest nitrates were found in paddy soils. Moreover, the over-application of large amount of nitrogen fertilizers resulted in soil pH decrease. Statistical analysis showed that there is a significant negative correlation between Ph (y) and content of nitric nitrogen (x) in the soils ( y = -9.961x 98.095 R2 = 0.151 n = 84 ). |
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| Keywords: | Soil utilization Soil Nitric nitrogen pH |
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