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本文以长期定位试验为基本材料，研究了１２年连续施用有机肥及化肥对土壤中Ｚｎ、Ｍｎ、Ｆｅ、Ｃｕ丰缺的影响。结果表明，有机肥是Ｚｎ、Ｆｅ、Ｃｕ的良好肥源，长期施用，使有效量比全量，上层比下层增加显著，上层有效Ｚｎ由０．２提高到１．６ｍｇ／ｋｇ，提高８倍；有效Ｆｅ由５．３２提高到８．７２ｍｇ／ｋｇ，增加了６３．９％；有效Ｃｕ由１．１４提高到１．３４ｍｇ／ｋｇ，增加１７．５％。增施有机肥及化肥，促进作物对Ｚｎ、Ｍｎ、Ｆｅ、Ｃｕ的吸收，提高了作物产量；同时，由于有机肥及根茬腐解，降低了土壤ｐＨ值，促进土壤全Ｚｎ、Ｆｅ、Ｍｎ的分解与矿化，使其转化为有效成分。
In this paper, the long-term positioning test as the basic material to study the 12 years of continuous application of organic manure and chemical fertilizers on soil Zn, Mn, Fe, Cu abundance of lack. The results showed that organic manure was a good source of Zn, Fe and Cu. After long - term application, the effective amount was more than the full amount, and the upper layer increased more significantly than the lower layer. The effective Zn in the upper layer was increased from 0.2 to 1.6 mg / kg and increased by 8 times. Fe increased from 5.32 to 8.72mg / kg, an increase of 63.9%; available Cu increased from 1.14 to 1.34mg / kg, an increase of 17.5%. Organic fertilizer and chemical fertilizer are added to promote the absorption of Zn, Mn, Fe, Cu and improve crop yield. At the same time, due to the decomposition of organic fertilizer and root stubble, the soil pH value is decreased and the total Zn, Fe, Mn Decomposition and mineralization, make it into active ingredients.