| 灌水方法对塑料大棚土壤—─植株硝酸盐分配影响 |
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| 引用本文： | 杨丽娟,张玉龙,李晓安,须晖.灌水方法对塑料大棚土壤—─植株硝酸盐分配影响[J].土壤通报,2000,31(2):63-65. |
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| 作者姓名： | 杨丽娟 张玉龙 李晓安 须晖 |
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| 作者单位： | 沈阳农业大学土地与环境学院,辽宁,沈阳,110161 |
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| 基金项目： | 国家教育部博士点基金资助. |
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| 摘 要： | 在塑料大棚草甸土上设置小区试验 .结果表明 :渗灌区土壤硝酸盐含量大于滴灌、沟灌区 ;在同一土壤层次 ,随着土壤水分增加 ,土壤NO- 3-N含量表现出呈指数函数减少趋势 .沟灌处理番茄植株营养器官中硝酸盐积累 ,不能被充分利用 .渗灌、滴灌能节水和提高肥料利用率 .
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| 关 键 词： | 塑料大棚 灌溉 硝酸盐 |
| 文章编号： | 0564-3945(2000)02-0063-03 |
| 修稿时间： | 1998年10月5日 |
Effects of irrigation methods on the distribution of nitratein soil and tomato plants in greenhouses |
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| Abstract: | Irrigation experiments were conducted to investigate the distributions of nitrate in soil and plants upon different irrigation methods in green houses.The results showed that the nitrate contents in seep irrigation plots were higher than those in drip and furrow irrigation plots.In addition,with increasing water contents in soil,soil nitrate contents decreased by exponential functions,if other factors were kept unchanged.In furrow-irrigated treatments the physiological activities of tomato plants were affected by excessive water,thus resulting in nitrate accumulation in nutritive organs of the plants. |
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| Keywords: | Greenhouses irrigation Nitrate |
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