浙江省酸性土壤中作物养分障碍因子的研究

Investigation on nutrient limiting factors for plant growth in the acid red soils distributed in Zhejiang Province

采用土壤养分状况系统研究法，对浙江省两种典型酸性红壤进行了化学分析、吸附试验和盆栽试验．结果表明，供试的龙游团石桔园土壤的养分障碍因子依次为缺Ｐ、低ｐＨ、缺Ｎ、缺Ｋ、缺Ｂ、缺Ｍｏ和缺Ｍｇ；供试的龙游坞堪棉田土壤则依次为缺Ｐ、缺Ｎ、缺Ｋ、缺Ｍｇ和缺Ｂ．应用土壤养分系统研究法，可快速、准确地确定土壤养分的丰缺状况，为肥料试验和推荐施肥提供依据，但在实际应用中尚有值得进一步改进和完善之处．

Soil analysis and adsorption experiments combined with pot trial were carried out to study the nutrient limiting factors for plant growth in two typical acid red soils of Zhejiang Province by the systematic approach proposed by Portch The results show that the main soil nutrient constraints included: P deficiency, low pH, deficiency in N, K, B, Mo and Mg for citrus garden soil at Tuanshi, and deficiency in P, N, K, Mg and B for cotton field soil at Wukan respectively Soil nutrient status could be determined rapidly by the systematic approach, which could be used as a basis for fertilizer test and fertilizer recommendation However, the systematic approach remains to be further improved in practice