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目前江苏省平均亩产50公斤以下的茶园约2000公顷．占全省茶园面积的15％左右．因此，改造低产茶园，提高产量与品质是当前迫切任务。作者针对苏南丘陵地区下蜀茶场、溧阳县茶果场和溧水县茶场等6个场的低产茶园土壤的物理性状及养分状况进行了野外调查与室内分析，结果探明苏南低产茶园土壤障碍因素：一是土壤物理性状差，在土体20～40cm处出现障碍层，限制茶树根系发育；二是土壤养分如有机质、全氮量、速效氮、速效钾等均普遍较低；三是施肥方法不当。最后还提出几点建议．
At present, Jiangsu Province has an average area of about 2,000 hectares of tea gardens with an average yield of 50 kilograms per mu. Accounting for about 15% of the province’s tea plantation area. Therefore, the transformation of low-yielding tea plantations to increase yield and quality is an urgent task at present. The authors conducted field investigation and laboratory analysis of the physical properties and nutrient status of low-yielding tea plantation soils in six fields including Xia Shu Tea Field in the hilly area of southern Jiangsu, the Cha-Hua Tea Field in Liyang County and the tea farm in Lishui County. The results showed that the low- Factors: First, poor physical properties of the soil, the barrier layer in the soil at 20 ~ 40cm, limiting the root development of tea; second soil nutrients such as organic matter, total nitrogen, available nitrogen, available potassium are generally lower; Third, fertilization Improper method Finally made some suggestions.