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为研究花生种植地土壤养分状况和确定主要养分限制因子，通过田间肥料试验结合土壤速效养分含量测定及养分吸附试验，结果：①１１３个养分吸附试验表明，对赤红壤发育的耕作土壤，线性吸附模型的拟合精度高于非线性吸附模型；土壤对加入的Ｓ、Ｂ养分吸附能力最强，平均提取率仅分别为２７％和４７％；对Ｚｎ的吸附能力最弱，提取率可达到８５％；Ｐ、Ｋ则居中，提取率分别为７０％和６５％。②土样分析和田间试验表明，Ｎ、Ｐ、Ｋ、Ｂ是花生的养分限制因子，增施单元养分肥料平均可增产６．６％～１７．４％；半数以上旱地和水旱轮作地还缺乏Ｍｇ和Ｚｎ养分，增施镁肥或锌肥，花生可增产６．２％～１６．４％；花生施用钼肥也有一定的增产作用。
In order to study the status of soil nutrients and determine the main limiting factors of nutrients in peanut planting areas, the soil fertility test and soil nutrient content determination and nutrient adsorption test were carried out. Results: ①113 nutrient adsorption experiments showed that for the cultivated soils with red soil development, linear adsorption model The fitting accuracy of soil was higher than that of non-linear adsorption model. The soil had the strongest adsorption capacity of S and B nutrients, the average extraction rate was only 27% and 47% respectively. The adsorption capacity of Zn was the weakest and the extraction rate could reach 85% P and K were intermediate, the extraction rates were 70% and 65% respectively. Soil samples and field experiments showed that N, P, K and B were the limiting factors of peanut nutrient content, and the nutrients and fertilizers increased by 6.6% ~ 17.4% on average; more than half of dryland, Lack of Mg and Zn nutrients, increased application of magnesium or zinc fertilizer, peanut yield increase of 6.2% to 16.4%; peanut molybdenum fertilizer also have some yield.