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对黑龙江省黑土区设施土壤中锌(Zn)积累特征进行分析,并进行风化煤制剂修复研究。结果表明:五常、肇东两地部分设施土壤Zn含量超标,五常市属于中等强度变异,肇东市属于弱变异;Zn形态以残渣态为主,弱酸可提取态含量较少,移动性较弱;施用风化煤制剂能显著降低黑土区设施土壤中弱酸可提取态Zn含量(P<0.05),以处理7(风化煤1500 kg/hm~2,复合肥375 kg/hm~2)修复效果最优;相关性分析结果表明,该制剂中风化煤起主导作用。
The zinc (Zn) accumulation in the soils of black soil areas in Heilongjiang Province was analyzed and the remediation of weathered coal preparations was studied. The results showed that the soil Zn content of some facilities in Wuchang and Zhaodong exceeded the standard, Wuchang was moderate intensity variation, and Zhaodong city was weak variation. The Zn morphology was mainly in the residual state, the weak acid extractable content was less and the mobility was weak ; Application of weathered coal preparation can significantly reduce the Zn content of weak acid extractables (P <0.05) in the soils of black soil areas and the treatment effect of 7 (weathered coal 1500 kg / hm ~ 2 and compound fertilizer 375 kg / hm ~ 2) The results of correlation analysis showed that weathered coal played a leading role in the preparation.