The aim of this study was to analyze the traction performance of an agricultural tractor according to soil moisture content (SMC). A load measurement system was assembled using a wheel torquemeter, a proximity sensor, a six-component load cell, and a data acquisition system. The field experiments for plowing were conducted at two test sites (Fields A and B) that were divided into 9-m² (3 m × 3 m) grids in which SMC was measured. The overall SMC was in the range of 20.0–50.0 % vol. To analyze tractor traction performance based on SMC, the data measured at Fields A and B were integrated. The SMC was divided into ranges of 20.0–25.0 % vol, 25.0–30.0 % vol, 30.0–35.0 % vol, 35.0–40.0 % vol, 40.0–45.0 % vol, and 45.0–50.0 % vol. Overall tractor traction performance parameters such as axle torque, slip, and traction increased with SMC. The traction coefficient gradually rose from 0.484 to 0.539 (a 111.4 % gain) as the SMC increased from 20.0 to 25.0% vol to 45.0–50.0 % vol. Additionally, the tractive efficiency was 0.748 at the SMC range of 20.0–25.0 % vol and 0.713 at the SMC range of 45.0–50.0 % vol. The tractive efficiency at the highest SMC level was 95.3 % based on lowest SMC level. The SMC influences various tractor traction performance factors such as traction coefficient and tractive efficiency. Therefore, it is necessary to consider SMC in the design of experiments intended to explore traction performance improvement.

这项研究的目的是根据土壤含水量（SMC）分析农用拖拉机的牵引性能。使用车轮扭矩计，接近传感器，六分量测力计和数据采集系统组装了负载测量系统。在两个分为9-m ^2的试验场（A和B场）进行耕作的田间试验。（3 m×3 m）用于测量SMC的网格。整个SMC的体积在20.0-50.0％的范围内。为了分析基于SMC的拖拉机牵引性能，将在字段A和B处测得的数据进行了整合。SMC分为20.0-25.0％体积，25.0-30.0％体积，30.0-35.0％体积，35.0-40.0％体积，40.0-45.0％体积和45.0-50.0％体积。SMC提高了拖拉机的总体牵引性能参数，例如轴扭矩，滑移和牵引力。随着SMC从20.0％增至25.0％体积至45.0-50.0％体积，牵引系数逐渐从0.484增至0.539（增加111.4％）。此外，牵引力效率在SMC范围为20.0-25.0％体积时为0.748，在SMC范围为45.0-50.0％体积中为0.713。SMC最低时的牵引效率为95.3％。SMC影响各种拖拉机的牵引性能因素，例如牵引系数和牵引效率。因此，有必要在旨在探索牵引性能改进的实验设计中考虑SMC。