| 含硫及含氯化肥对湘南水田土壤酸度和养分有效性的影响 |
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| 引用本文： | 陈铭,孙富臣,刘更另. 含硫及含氯化肥对湘南水田土壤酸度和养分有效性的影响[J]. 生态环境, 1993, 0(4) |
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| 作者姓名： | 陈铭 孙富臣 刘更另 |
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| 作者单位： | 中国科学院国家计委地理研究所，中国农业科学院，中国农业科学院 北京 100101，北京 100094，北京 100094 |
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| 摘 要： | 1990年5—11月,在湖南祁阳中国农科院红壤实验站水稻田布置田间试验,研究结果证实,在早稻和晚稻生长期间,与含氯化肥相比,施含硫化肥更能降低土壤pH而使土壤酸化,因而在南方水田施用含硫化肥时,必须和石灰及生理碱性肥相配合。同时,施含硫化肥能提高土壤有效性磷和钾的含量,增强土壤保肥与供肥能力。对大田水样中养分离子监测的结果表明,施含硫化肥减少钾离子的淋失;而施含氯化肥则减少硝态氮的淋溶,提高水田氮肥的利用率。
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| 关 键 词： | 水田 SO_4~(2-) Cl~- 土壤酸化 养分淋溶 养分有效性 |
EFFECTS OF SO_4~(2-) AND Cl~- FERTILIZERS ON SOIL ACIDITY AND NUTRIENT AVAILABILITY OF PADDY IN SOUTHERN HUNAN PROVINCE |
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| Chen Ming. EFFECTS OF SO_4~(2-) AND Cl~- FERTILIZERS ON SOIL ACIDITY AND NUTRIENT AVAILABILITY OF PADDY IN SOUTHERN HUNAN PROVINCE[J]. Ecology and Environmnet, 1993, 0(4) |
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| Authors: | Chen Ming |
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| Abstract: | The results in this article showed that,in contract with the application of fertilizers containing Cl~-ion, the SO_4~(2-) fertilizer application to paddy field in southern Hunan Province had the effects of reducing pH value and increasing P and K availability of the soil. By monitoring nutrient ion concentrations in Water in the field it also showed that the SO_4(2-) fertilizer application reduced K~+ leaching,while the Cl~- fertilizer application reduced NO_3~- leaching. |
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| Keywords: | Paddy field SO_4~(2-) fertilizer Cl~- fertilizer Soil acidification Nutrient availability Nutrient leaching loss |
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