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本文对１９８５～１９９４年持续２７季稻－稻－麦轮作制下不同氮、磷、钾化肥和有机肥用量定位试验中２０个不同施肥处理土壤作了肥力测定，采用回归分析法研究了长期施用化肥及有机肥对土壤肥力的影响。结果表明：长期施用有机肥能显著或极显著地提高土壤有机质含量，氮、磷全量及速效氮、磷、钾含量；化肥中除氮肥对土壤有机质及氮、磷、钾养分影响不显著外，磷肥能极显著地提高土壤全磷及速效磷含量，而钾肥能极显著地提高土壤速效钾含量，但对土壤全钾量影响不大
In this paper, the fertility of 20 different fertilized soils in different positions of nitrogen, phosphorus and potassium fertilizers and organic manures under the 27-year continuous rice-rice-wheat rotation system from 1985 to 1994 was measured. The effects of long-term application Effects of Fertilizers and Organic Fertilizers on Soil Fertility. The results showed that the long-term application of organic manure could significantly or extremely significantly increase the content of soil organic matter, the total amount of nitrogen and phosphorus and the available nitrogen, phosphorus and potassium contents. The effect of nitrogen fertilizer on soil organic matter and nitrogen, phosphorus and potassium nutrients was not significant, Phosphorus fertilizer can significantly increase soil total phosphorus and available phosphorus, and potassium fertilizer can significantly increase soil available potassium, but little effect on total potassium