中文摘要：

三国时期定额租成为社会上主要的田租制度。吴简反映出孙吴时期存在多种田租额，都是定额租。田租额与田地类型密切相关。孙昊的田地类型复杂多样，分类标准也不统一。孙吴时期长沙地区的农业生产水平有很大提高．亩产量能达到每亩产谷6．67斛（或8斛）-10斛的水平。孙吴民屯的田租率低于曹魏民屯的田租率．军屯的田租率略低于或等于曹魏军屯的田祖率。

英文摘要：

From the period of the Three Kingdoms, quota tax had became the major tax system.Sun Wu had many kinds of Levying Taxes of Farmland which was reflected by the Wu Bamboo Slips, all was quota tax. The difference of levying tax of farmland related to the type of farmland. The type of farmland in Sun Wu was various, and the classification standards were not uniformed. The region of Chang sha＇ s agricultural production level in Sun Wu had been greatly improved, and the yield per Mu of Chang sha had achieved the level from 6.67Hu （ 斛 ） （or 8Hu） to 10 Hu of rices. The farmland tax rate of Sun Wu＇ s wasteland by peasant was lower than that of Cao Wei＇ s, and the farmland tax rate of Sun Wu＇ s wasteland by soldier was below or equal to that of Cao Wei＇ s.