蓝桉造林施肥对林地土壤肥力影响的监测结果

为了解蓝桉人工林地土壤肥力的变化情况，进行了蓝桉施肥和造林后的林地土壤肥力监测和分析。经对设于保山市辛街３种施肥处理的蓝桉人工林地，进行为期两年（１９９３、１９９４年）的土壤１１项化学性状监测得出：土壤的有效Ｎ、Ｐ、Ｋ的含量随林地的施肥而增加；造林两年后，土壤的ｐＨ（Ｈ２Ｏ）、ｐＨ（ＫＣｌ），有机酸，全氮，有效Ｎ、Ｐ、Ｋ，水解酸，交换性Ｃａ（＋＋）、Ｍｇ（＋＋）的指标均低于造林前。

The Monitoring Report on the Soil Fertility of Forest Land Fertilized and Afforested with Eucalyptus globulus

In order to learn the soil fertility change of Eucalyptus globulus man-made forest, the monitor and analysis on the soil fertility of forest land fertilized and afforested with Eucalyptus globulus were carried on. Through monitoring 11 items soil chemical characters on Eucalyptus globulus man-made forest installing in XinJie of Baoshan city which have been fertilized with 3 methods for 2 years (1993, 1994), the results of monitor is following: the content of available N, P, K increases accompanied by the fertilization on forest land, after 2 years' afforestation, a series indexes of soil such as pH (H2O),pH (KCL), organic acid, total N, available N, P, K, hydrolytic acid and exchangeable Ca( ) and Mg( ) are lower than those of before afforestation.