盛夏季节短期淹水栽培蕹菜对设施盐渍化土壤的影响  

Effects of short-term submerged cultivation of Ipomoea aquatica Forsk on salinized soil in midsummer

作　　者：潘瑞瑞 钱佳宇 江解增 张昊 张永仙 PAN Rui-rui;QIAN Jia-yu;JIANG Jie-zeng;ZHANG Hao;ZHANG Yong-xian(Institute of Aquatic Vegetable Research,Yangzhou University,Yangzhou 225009,Jiangsu,China)

机构地区：[1]扬州大学水生蔬菜研究室,江苏扬州225009

出　　处：《湖北农业科学》2020年第4期59-62,共4页Hubei Agricultural Sciences

基　　金：江苏省科技攻关项目(BE2017380);江苏现代农业(蔬菜)产业技术体系项目(JATS[2018]309);2018年农业技术试验示范与服务支持项目(091821301064072010)。

摘　　要：为了研究盛夏高温季节短期淹水栽培后断水降渍对土壤性质的影响,以蕹菜(Ipomoea aquatica Forsk)为试验材料,在盐渍化处理的封底栽培桶中开展为期40 d的淹水栽培试验,然后32 d断水降渍,探究其对0~40 cm各土层的EC值、土壤养分含量和土壤酶活性的影响。结果表明,盛夏高温季节短期淹水后断水降渍,结合种植速生性蕹菜,可明显降低盐渍化土壤表层盐分浓度并使0~40 cm各土层养分趋于均衡,认为通过短期淹水使盐分下渗,结合种植速生性水生蔬菜的吸收转移,可有效缓解因超量使用化肥而致的设施土壤盐渍化。In order to study the effects of short-term paddy and upland rotation on soil properties in midsummer high temperature season, taking Ipomoea aquatica Forsk as test material, a 40 d submerged cultivation test was carried out in the backcover cultivation bucket of soil salinization treatment, and then 32 d of dry cultivation was used to explore its influence on the EC value, soil nutrient content and soil enzyme activity of 0~40 cm soil layer. The results showed that the water cut off after the short period of flooding in midsummer high temperature season, combined with the planting of fast-growing Ipomoea aquatica Forsk, it can obviously reduce the salinity of saline soil surface and equalize the nutrients in 0~40 cm soil layer. It is believed that the saline infiltration through short-term flooding, combined with the absorption and metastasis of fast-growing aquatic vegetables, it can effectively alleviate the soil salinization of the facilities caused by excessive use of chemical fertilizers.

关 键 词：盐渍化 淹水栽培 蕹菜(Ipomoea aquatica Forsk) 土壤养分 

分 类 号：S156.41[农业科学—土壤学] S626[农业科学—农业基础科学]