珠江三角洲冲积平原种植热带果树的土壤条件探讨

Soil condition of planting tropical fruit tree in alluvial plain in the Pearl River delta

以广州市番禺区万顷沙十五涌的土壤为例,探讨珠江三角洲冲积平原种植热带果树的土壤条件。该地土壤位于珠江三角洲冲积平原,是由人工围海造田而成的,有关部门计划在此大面积种植木瓜、杨桃、番石榴等热带果树。通过在种植果树前进行土壤本底调查,摸清土壤养分含量状况,找出土壤存在问题,并结合果树生长的需要,提出土壤利用改良意见。降低地下水位,合理施肥,建立合理的间套作制度,是提高和稳定土壤肥力的基本措施。

The soil in Wanqingsha, Panyu, Guangzhou located in the Pear River delta is in the man-made land around the sea. Some tropical fruit trees, such as pawpaw, carambola, guava, will be planted here on large areas. Soil investigation results showed that lowering underground water, reasonable fertilization and setting up a feasible intercropping system, will be the basic measures to arise soil fertility.