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首页> 外文期刊>Journal of Plant Nutrition >Changes of heavy metals in soil and wheat grain under long-term environmental impact and fertilization practices in North China
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Changes of heavy metals in soil and wheat grain under long-term environmental impact and fertilization practices in North China

机译:北方长期环境影响与施肥实践下土壤和小麦籽粒重金属的变化

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摘要

We evaluated the effects of long-term fertilization on heavy metals in soil and wheat grain under no-fertilizer control (CK), nitrogen, phosphorus, and potassium fertilizers (NPK), NPK plus straw (NPKS), and NPK plus manure (NPKM) treatments. Total lead (Pb) significantly increased in the CK over the initial soil. All fertilization treatments increased soil total arsenic (As) than CK, and the NPKM increased total cadmium (Cd), copper (Cu), and zinc (Zn) than NPK. All fertilization treatments increased soil available As and Cd than CK, and the NPKM increased available As and chromium (Cr) than NPK. The NPKS decreased grain As, Cd, Cu, and bran Cr, Zn, and Pb; but the NPKM increased grain Cr, Pb, and bran As, and Cu than NPK. Under current manure fertilization systems, the maximum bearing year of soil for As, Cr, Cd, Cu, Zn, and nickel (Ni) was 1136, 2990, 694, 1530, 910, and 1555years, respectively.
机译:我们评估了长期施肥对无肥料控制(CK),氮,磷和钾肥(NPK),NPK加秸秆(NPKS)和NPK Plus粪便(NPKM )治疗。 在初始土壤中,CK的总铅(PB)显着增加。 所有施肥治疗砷总砷(AS)增加而不是CK,NPKM增加了总镉(CD),铜(Cu)和锌(Zn)。 所有施肥治疗都会增加土壤和镉的土壤,而不是CK,而NPKM可用于和铬(Cr)比NPK增加。 NPKS减少谷物,Cd,Cu和Bran Cr,Zn和Pb; 但NPKM增加了谷物Cr,Pb和麸皮,而不是NPK。 在目前的粪肥系统下,作为AS,Cr,Cd,Cu,Zn和镍(Ni)的土壤的最大轴承年份分别为1136,2990,694,1530,910和1555年。

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