| 不同土壤与施肥对莴笋硝酸盐和营养品质效应 |
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| 引用本文： | 徐卫红,王正银,刘飞.不同土壤与施肥对莴笋硝酸盐和营养品质效应[J].西南农业大学学报,2001,23(6):553-556. |
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| 作者姓名： | 徐卫红 王正银 刘飞 |
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| 作者单位： | 西南农业大学资源环境学院，重庆400716 |
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| 摘 要： | 采用盆栽试验研究了3种不同pH值菜园土施肥对莴笋硝酸盐含量及营养品质的影响。结果表明，3种菜园土以酸性土上莴笋适应性最好，中性土次之，微酸性土生长最差。增施磷、钾肥及氮磷钾＋DCD＋M0肥均明显提高了莴笋产量，有利于降低莴笋茎、叶硝酸盐含量；酸性土、中性土以氮磷钾配施较施氮降低硝酸盐含量3．0％（茎）、10．0％（叶）、22．8％（茎）28．9％（叶），提高产量20．5％，125．00％，且改善了莴笋营养品质；微酸性以氮磷钾＋DCD＋M0配施较氮降低茎硝酸盐含量27．3％，改善了营养品质，提高产量21．4％。酸性土较中性土、微酸性土更易获得高产、低硝酸盐的优质莴笋产品。
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| 关 键 词： | 土壤条件 施肥 莴笋 硝酸盐 营养品质 |
| 文章编号： | 1000-2642(2001)06-0553-04 |
| 修稿时间： | 2001年4月16日 |
EFFECTS OF FERTILIZATION ON NITRATE CONTENT AND NUTRITIONAL QUALITY OF LETTUCE GROWN IN DIFFERENT SOILS |
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| XU Wei-hong,WANG Zheng-yin,LIU Fei.EFFECTS OF FERTILIZATION ON NITRATE CONTENT AND NUTRITIONAL QUALITY OF LETTUCE GROWN IN DIFFERENT SOILS[J].Journal of Southwest Agricultural University,2001,23(6):553-556. |
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| Authors: | XU Wei-hong WANG Zheng-yin LIU Fei |
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| Abstract: | A pot experiment was conducted, in which lettuce was grown in vegetable soils with different pH values. Lettuce was shown to be most adaptable to acid vegetable soil, followed in sequence by neutral soil and slightly acid soil. As compared with the treatment of application of N alone, the combined application of NPK increased lettuce yield by 20.5% and 125.0%, respectively, on acid and neutral soils, and nitrate content decreased by 3.0% and 22.8% in the stem and by 10.0% and 28.9% in the leaves, thus greatly improving the nutritional quality of the crop. On the slightly acid soil, application of NPK DCD Mo enhanced lettuce yield by 21.4% and improved its quality, decreasing nitrate content by 27.3%. |
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| Keywords: | soil condition fertilization lettuce nitrate nutritional quality |
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