吉林省梨树主产区果园土壤养分调查

目的]了解吉林省梨树主产区果园土壤养分状况。方法]对52个有代表性的梨园土壤p H和矿质养分含量进行调查分析。结果]5个县市梨园土壤的p H范围分别为5.60~6.45、4.93~6.75、5.51~6.46、4.55~6.20、5.16~6.47,有机质含量范围分别为1.58%~3.38%、1.62%~2.68%、1.79%~5.47%、1.73%~3.14%、2.03%~3.74%,碱解氮、有效磷、速效钾含量范围分别为80.85~102.01、42.33~101.55、150.19~313.26 mg/kg,交换钙和交换镁、有效锌含量较高,有效铜、有效铁、有效锰含量普遍较适宜。结论]吉林省部分县市土壤酸化较严重,有机质含量较适宜,能保证梨树正常生长,同时应控制钙、镁、锌肥的使用。

Investigation of Soil Nutrient in Pear Orchard of Jilin Main Producing Areas

Objective] The research aimed to study soil nutrient status in present main producing areas of Jilin .Method] pH and mineral nu-trient contents of 52 representative soil were investigated and analyzed.Result] The range of pH in pear orchards of five counties was 5.60-6.45,4.93-6.75,5.51-6.46,4.55-6.20 and 5.16-6.47.The range of organic matter content was 1.58%-3.38%, 1.62%-2.68%, 1.79%-5.47%, 1.73%-3.14% and 2.03-3.74%.The range of N, P, K content was 80.85-102.01,42.33-101.55 and 150.19-313.26, respectively.The exchangeable contents of Ca, Mg and Zn were effectively high.Available Cu, Fe and Mn content were generally ap-propriate.Conclusion] Organic matter content is more appropriate, but soil acidification occurred in some counties.And the application of cal-cium, magnesium and zinc fertilizer shall be controlled.