| 不同用量的钾镁肥在砖红壤中的交互效应 |
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| 引用本文： | 牛明镇,刘艳芬,向奕洁,王淑梅,王晓琴,耿建梅.不同用量的钾镁肥在砖红壤中的交互效应[J].热带作物学报,2019,40(7):1284-1289. |
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| 作者姓名： | 牛明镇 刘艳芬 向奕洁 王淑梅 王晓琴 耿建梅 |
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| 作者单位： | 海南大学热带作物学院,海南海口 570228 |
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| 基金项目： | 国家自然科学基金项目(No.41461065);海南省耕地改良关键研究与示范专项子课题(No.HNGDxf 2014-2016) |
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| 摘 要： | 研究不同用量的钾镁肥在砖红壤中的相互作用规律,可为合理施用钾镁肥提供理论依据。供试土壤采自琼海市大路镇冬瓜种植地,在室内试验条件下,通过向砖红壤中加入不同用量的钾镁肥,每隔一段时间,测定土壤中钾镁的有效含量。结果表明,施用钾镁肥是提高土壤中速效钾和交换性镁含量的有效方法;在不施钾肥时,无论施用镁肥与否,对土壤中速效钾含量没有影响,当施钾量分别达到50、250 mg/kg时,施高镁肥（150 mg/kg）对钾有拮抗作用;在不施镁肥或施少量镁肥（30 mg/kg）时,无论施用钾肥与否,对土壤中交换性镁含量都没有影响,但当施高量镁肥时,钾对镁有拮抗作用,但随着培养时间的延长,拮抗作用减弱。
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| 关 键 词： | 冬瓜 砖红壤 钾 镁 含量 有效性 |
| 收稿时间： | 2018-12-03 |
Interactive Effects of Potassium and Magnesium Application Rates in Lateritic Soil |
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| NIU Mingzhen,LIU Yanfen,XIANG Yijie,WANG Shumei,WANG Xiaoqin,GENG Jianmei.Interactive Effects of Potassium and Magnesium Application Rates in Lateritic Soil[J].Chinese Journal of Tropical Crops,2019,40(7):1284-1289. |
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| Authors: | NIU Mingzhen LIU Yanfen XIANG Yijie WANG Shumei WANG Xiaoqin GENG Jianmei |
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| Institution: | College of Tropical Crops, Hainan University, Haikou, Hainan 570228, China |
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| Abstract: | The interaction effects of potassium and magnesium fertilizer with different their application rates in lateritic soil were studied to provide a theoretical basis for rational application of potassium and magnesium fertilizer in crop production. The experimental soil was collected from the winter melon planting sites in Dalu Town, Qionghai. Under the indoor test condition, different amounts of potassium and magnesium fertilizer were applied to the laterite, and the contents of available potassium and exchangeable magnesium in the soil were measured at intervals. The results showed that the contents of available potassium and exchangeable magnesium in soil were increased by applying potassium and magnesium fertilizer. Whether magnesium fertilizer was applied or not had no effect on the content of available potassium with no potassium fertilizer applied in the soil. When the amount of potassium application reached 50 mg/kg and 250 mg/kg respectively, high magnesium (150 mg/kg) had an antagonistic effect on potassium. When no or a small amount of magnesium fertilizer (30 mg/kg) was applied, whether potassium fertilizer was applied or not did not affect the content of exchangeable magnesium in the soil. However, when high amount of magnesium fertilizer (150 mg/kg) was applied, potassium had an antagonistic effect on magnesium, but the antagonistic effect weakened with the extension of culture time. |
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| Keywords: | wax gourd (Folium benincasae) lateritic soil potassium magnesium content validity |
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