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菜田土壤肥料定位试验结果表明, 长期施用有机肥和氮肥能够提高土壤有效锌含量,而且随着氮肥用量的增加,土壤中锌有效性增强。无论施有机肥或不施有机肥,磷钾化肥单施或配施对土壤锌有效性都不会产生明显影响。土壤中锌的有效性受多种因素影响,本试验条件下,土壤有效锌含量与土壤全碳、全氮含量均呈极显著的正相关关系,而与土壤pH值之间相关性比较小。
The results of soil fertilization experiment in vegetable field showed that long-term application of organic manure and nitrogen fertilizer could increase the available zinc content in soil, and the zinc availability in soil increased with the increase of nitrogen fertilizer. No matter with organic fertilizer or without organic fertilizer, the application of phosphorus and potassium fertilizers alone or with no effect on soil zinc availability will have a significant impact. The effectiveness of zinc in soils is affected by many factors. Under the experimental conditions, there is a significant positive correlation between soil available zinc and soil total carbon and total nitrogen, but not with soil pH.