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广东省博罗县拥有的稻田,占全县耕地面积的75%左右。主要分布于冲积平原和低丘宽谷。土壤的成土母质,绝大多数是近代河流冲积物和山溪洪积物,也有一些是基岩风化残积物和坡积物。由于沉积和成土时间较短,并受各次沉积先后次序的影响(?)所以,颗粒组成不同的土层,往往就成为土壤剖面的主要构造单元,对土壤性质、肥力状况和生产利用管理起到一定影响。本文拟对一些主要土层的特点及其与土壤生产性能的关系,作一概略介绍。
Boluo County, Guangdong Province, has the rice fields, accounting for about 75% of the county’s arable land. Mainly distributed in alluvial plain and hilly wide valley. Soil soil parent material, the vast majority of modern river alluvial and mountain stream alluvial, there are some bedrock weathering residuals and slope sediment. Due to the short time of sedimentation and earth formation and the influence of the order of sedimentation (?), The soil layers with different particle compositions often become the main tectonic units of the soil profile. The soil properties, fertility status and production and utilization management Play a certain influence. This article intends to introduce the characteristics of some major soil layers and their relationship with soil productivity.