采集22个代表区域的206份蔗田土样,结合土壤养分丰缺分级,采用主成分综合评价分析了12个土壤养分指标。结果表明,土壤p H总体较低;超过一半的地块有机质、全氮、全磷、全钾、碱解氮和速效钾处在低级至甚缺水平;部分地块铁、锰含量较高,铁不缺,铜、锰、锌普遍缺乏。主成分分析表明,在主成分1上,p H、有机质、全氮、碱解氮、全磷、有效磷、全钾以及有效锰,有效锌、有效铜、有效铁起主要作用;在主成分2上,有效钾、有效铁、有效铜、有效锌、有效锰起主要作用;在主成分3上,有效磷、全磷、有效锰起主要作用;在主成分4上,有机质、全磷、有效磷、有效钾和有效铁起主要作用;在主成分5上,有机质、全钾、速效钾、有效锰起主要作用。22个研究区域的土壤肥力划分为5类,其中肥力水平较低的3类和4类居多,总体肥力水平偏低。 A total of 206 sugarcane soil samples from 22 representative areas were collected. Based on the abundance and abundance of soil samples, 12 soil nutrient indicators were analyzed using the principal component analysis. The results showed that soil p H was generally low; in more than half of the plots, the contents of organic matter, total nitrogen, total phosphorus, total potassium, available nitrogen and available potassium were in the range of low level to very low level; Iron is not short, copper, manganese, zinc is generally lacking. The principal component analysis showed that p H, organic matter, total nitrogen, available nitrogen, total phosphorus, available phosphorus, total potassium and available manganese, available zinc, available copper and available iron played a major role on principal component 1. In the main component 2, available potassium, available iron, available copper, available zinc, and available manganese played a major role. On the main component 3, available phosphorus, total phosphorus and available manganese played a major role. On the main component 4, organic matter, total phosphorus, Available phosphorus, available potassium and available iron played a major role; in the main component 5, organic matter, total potassium, available potassium, available manganese played a major role. Soil fertility of 22 research areas was divided into 5 categories, of which 3 and 4 with low levels of fertility and mostly low levels of fertility.