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蔬菜地磷淋失调控途径的研究 被引量:2

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摘要 针对蔬菜地磷渗漏污染问题,比较研究粉煤灰、石膏、碳酸钙、氯化铁、硫酸铝5种处理对模拟灌溉条件下渗漏液中磷含量的影响。结果表明:硫酸铝、氯化铁处理渗漏液中水溶性全磷在0.03~0.50 mg/L之间,比对照降低了57%~95%;处理后渗漏液中钼酸铵反应性磷也有相同的趋势。粉煤灰、石膏、碳酸钙3处理有一定的控制效果。在60 d的模拟试验期间,对照处理磷总流失量为77.1 mg/m2,硫酸铝、氯化铁处理分别为10.9 mg/m2、17.1 mg/m2,降低了85.9%、77.8%。氯化铁处理不利于植物生长,但硫酸铝处理对植物的影响较小(生物量降低33%)。可见,硫酸铝可以有效控制蔬菜地的磷流失,对植物影响较小;氯化铁也可以有效控制磷流失,但易产生不利影响。
出处 《江苏农业科学》 CSCD 北大核心 2011年第1期179-180,共2页 Jiangsu Agricultural Sciences
基金 河南省教育厅自然科学研究计划项目(编号:2010B210006) 河南科技大学科研启动资金(编号:09001088)
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