| 青海省设施蔬菜土壤次生盐渍化现状及危害规律研究 |
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| 引用本文： | 张生田.青海省设施蔬菜土壤次生盐渍化现状及危害规律研究[J].安徽农业科学,2011,39(20):12174-12175,12183. |
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| 作者姓名： | 张生田 |
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| 作者单位： | 西宁市蔬菜科学研究所,青海,西宁,810016 |
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| 基金项目： | 青海省科技厅科技计划资助项目 |
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| 摘 要： | 目的]为青海省设施土壤的可持续利用提供理论依据,指导温室栽培。方法]测定不同地区、种植年限设施土壤中全盐、碱解氮、速效磷、速效钾、有机质含量和pH,与露地土壤养分作对比。结果]设施土壤平均含盐量达到了0.31%,是露地的4.2倍,次生盐渍化发生率达到了65%。而且随着温室栽培年限的延长,土壤含盐量呈逐年上升趋势;随着剖面土层的加深,盐分和养分含量逐渐减少,土壤盐分含量主要集中有表层,存在一定的表聚倾向。结论]设施土壤次生盐渍化已成为青海省设施蔬菜生产的一个重要限制因子。
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| 关 键 词： | 设施蔬菜土壤 次生盐渍化 危害规律 |
Study on the Status Quo and Damaged Patterns of Vegetable Soil Secondary Salinization in Qinghai Province |
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| ZHANG Sheng-tian.Study on the Status Quo and Damaged Patterns of Vegetable Soil Secondary Salinization in Qinghai Province[J].Journal of Anhui Agricultural Sciences,2011,39(20):12174-12175,12183. |
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| Authors: | ZHANG Sheng-tian |
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| Institution: | ZHANG Sheng-tian(Xining Vegetable Science Research Institute,Xining,Qinghai 810016) |
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| Abstract: | Objective] The aim was to provide theoretical basis for the sustainable application of facility soil in Qinghai Province and guidance for greenhouse cultivation.Method] The salt,nitogen,available phosphorus and available potassium,organic content and pH and soil nutrition in the open space in different places and plantation years were compared.Result] The average soil salinity was reached 0.31% and 4.2 times than it in the open field.The occurred rate of secondary salinization was reached 65%.And with the extension of greenhouse cultivate period,soil salinity has a rising trend year by year.As the deepening of soil section,salinity and nutrient content was gradually decreased.The soil salt content is mainly concentrated in the soil surface.There has a certain tendency of surface accumulation.Conclusion] Facility soil secondary salinization has became an important limitation factors for the production of facility vegetable in Qinghai Province. |
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| Keywords: | Greenhouse vegetable soil Secondary salinization The status quo Damage pattern |
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