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对荔浦芋产量与13个土壤养分指标进行了主因子分析。结果表明:荔浦芋产量与全氮、有效氮以及有机质极显著负相关,与有效锌、有效铁、有效铜、有效硼极显著正相关。从土壤养分中提取出了4个主因子,第1主因子主要由全磷、全钾、有效磷以及有效锰决定;第2主因子是全氮、有效氮、有机质的综合反映;第3主因子主要由有效锌、有效铜、有效硼决定;第4主因子主要反映了pH、有效钾、有效铁3个肥力养分指标。其中第2主因子对产量影响最大,与产量的相关系数为-0.651**。对荔浦芋产量与主因子进行回归分析,得到主因子回归方程:y=-0.651×Z2-0.187×Z4。控制无机氮肥的施用,增施有机肥,在施加碱性肥料的同时,补充叶面微肥,有利于产量的提高。
The main factors of Lipu yield and 13 soil nutrients were analyzed. The results showed that there was a significant negative correlation between yield and total nitrogen, available nitrogen and organic matter, and significant positive correlation with available zinc, available iron, available copper and available boron. Four main factors were extracted from soil nutrients. The first major factor was mainly determined by total phosphorus, total potassium, available phosphorus and available manganese. The second main factor was the comprehensive reflection of total nitrogen, available nitrogen and organic matter. The third main factor The factor is mainly determined by available zinc, available copper and available boron. The fourth main factor mainly reflects the three fertility indicators of pH, available potassium and available iron. Among them, the second main factor had the greatest impact on the yield, and the correlation coefficient with the yield was -0.651 **. Regression analysis of the yield and main factor of Lipu taro showed that the regression equation of the main factor was y = -0.651 × Z2-0.187 × Z4. Controlling the application of inorganic nitrogen fertilizer, adding organic fertilizer, adding alkaline fertilizer at the same time, foliar micronutrients, is conducive to the increase of yield.