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采用掘根抖落法收集根际土，研究江苏省东台市林场盐渍化土壤上１－６９杨根际土的矿质离子和养分状况。结果表明，根际土与非根际土有差异。根际土中矿质离子的总量比非根际土高，由大到小的顺序为：３年生林分、６年生林分、１２年生林分。各林龄的林分中，Ｋ＋在根际土中均明显地富积。就全土层平均值而言，Ｎａ＋、Ｃａ２＋、Ｍｇ２＋、ＳＯ４２－在３年生林分的根际土中有较显著的富积，在６和１２年生林分中则变化不明显；但在表土层的根际土中，Ｎａ＋、Ｃａ２＋、ＳＯ４２－有一定富积；其它离子如Ｍｇ２＋、ＨＣＯ３－、Ｃｌ－则变化不明显。所有林分中，根际土的ｐＨ都低于非根际土，水解Ｎ、速效Ｐ、水溶性Ｋ则有显著富积。
Rhizosphere soil was collected by digging-out method, and the mineral ion and nutrient status of 1-69 rhizosphere soil on salinized soil in Dongtai, Jiangsu Province was studied. The results showed that rhizosphere soil and non-rhizosphere soil are different. The total amount of mineral ions in the rhizosphere soil was higher than that in the non-rhizosphere soil. The descending order was 3-year-old forest, 6-year-old forest and 12-year-old forest. Among the forest stands, K + obviously enriched in rhizosphere soil. In terms of the average soil layer, Na +, Ca2 +, Mg2 +, and SO42- were significantly enriched in rhizosphere soils of three-year stands, but not obvious in 6 and 12 years of stands. However, Of rhizosphere soil, Na +, Ca2 +, SO42- have a certain accumulation; other ions such as Mg2 +, HCO3-, Cl- did not change significantly. In all stands, the pH of rhizosphere soil was lower than that of non-rhizosphere soil, hydrolyzed N, available P and water-soluble K.