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机构地区:[1]云南省林业科学院,昆明650201 [2]云南林业职业技术学院,昆明650224
出 处:《西北农业学报》2013年第8期186-192,共7页Acta Agriculturae Boreali-occidentalis Sinica
基 金:国家自然科学基金(31100248);云南省科技厅面上项目(2011FZ305);云南省教育厅质量工程"园林技术省级特色专业"建设项目
摘 要:采用短期室内中水土柱模拟灌溉和长期中水灌溉区大田定位试验,研究中水灌溉后植物体内元素含量变化。结果表明,中水灌溉下全氮含量明显增大,全磷和全钾也有增大趋势;全钠、氯离子和硼含量因植物种类的不同而异,与对照差异显著(P<0.05);重金属Cu、Zn、Pb、Cd含量在中水灌溉后大多数植物都有相对增加的趋势,与清水对照差异显著(P<0.05)。可见,中水灌溉引起植物体内矿质元素含量的变化。The indoor soil column simulation experiment irrigated by reclaimed water for short-term,and the field experiment irrigated by reclaimed water for long-term were used to investigated,the leaf element content changes in different plants.The results showed that total nitrogen content increased obviously,total Phosphorus and total Potassiums had a increasing trend under reclaimed water irrigation;Sodiums,Chloride ions and Boron contents were increased or decreased in different species of plants,and had significant difference with CK(P0.05).The contents of heavy metals such as Cu,Zn,Pb,Cd had a relative increasing trend after reclaimed water irrigation,and also showed significant difference with CK(P0.05).So,reclaimed water irrigation will change the content of mineral elements in plants.
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