以衢县三口畈为例，对浙西河谷平原稻田在３０多年动态经营条件下，利用航空像片，定位定期对２５个土壤监测点进行有机质及养分含量分析。结果表明：土壤有机质呈上升趋势，碱解氮普遍增加，有效磷亏缺明显，有效钾略有下降并呈低指标含量状态，酸碱度有小的变化，而各监测点肥力因素演变又具有不平衡性。本文还就其影响因素进行了探讨，并提出改良稻田土壤的对策。 Taking Quzhou Sankou as an example, the organic matter and nutrient contents of 25 soil monitoring sites were analyzed periodically using aerial photographs and positioning based on the dynamic management of paddy fields in the western Zhejiang plain in more than 30 years. The results showed that the soil organic matter was in an upward trend, the content of available nitrogen was generally increased, the available phosphorus was obviously deficient, the content of available potassium was slightly decreased and showed a low content of indicator, and the pH was little changed. Sex. This article also discussed its influencing factors, and put forward the countermeasure of improving the paddy soil.