我场地处(衤方)河中下游,造林地绝大多数属纯沙滩地,质地粗、肥力低,沙层深达十米以上。只有一少部分造林地是土沙混合的滩地。地下水位多数为一至二米,个别地片大于二米或小于一米。由于立地条件太差,加之栽培管理粗放,现有林大都为低产林和“小老树”。 My field is located (衤 Fang) river middle and lower reaches, the vast majority of afforestation is a pure sandy beach, coarse texture, low fertility, sand depth of up to 10 meters. Only a small part of the afforestation area is mixed with sandy soil. Groundwater level for the majority of one to two meters, individual pieces of more than two meters or less than one meter. Due to poor site conditions, coupled with extensive cultivation and management, the existing forests are mostly low-yielding forests and “little old trees.”