To reveal the effects of Fenlong tillage on soil characteristics and cabbage yield in dam land, six treatments were set up: flat rotary plowing, flat Fenlong 30 cm, flat Fenlong 40 cm, ridge rotary plowing, ridge Fenlong 30 cm, and ridge Fenlong 40 cm. The effects of the 6 treatments on soil physiochemical properties, enzymes activities, cabbage quality and yield were determined. It was shown that compared with the treatment of flat rotary plowing, in the soil layer of 0-20,>20-40 cm, the ridge Fenlong 40 cm treatment significantly (P<0.05) decreased soil bulk density by 4.14%, 11.45%, respectively; increased soil porosity by 2.38, 5.12 percentage points, respectively; decreased soil pH value by 0.25, 0.20, respectively; decreased soil electrical conductivity by 25.98%, 28.20%, respectively; enhanced the contents of soil organic matter (by 25.34%, 34.57%, respectively), alkali-hydrolyzable nitrogen (by 37.89%, 18.57%, respectively), available potassium (by 31.64%, 24.64%, respectively), total nitrogen (by 38.24%, 46.67%, respectively), and total phosphorus (by 44.44%, 72.22%, respectively); increased the activities of soil urease (by 40.06%, 166.97%, respectively), catalase (by 25.92%, 19.23%, respectively), invertase (by 24.01%, 50.84%, respectively), and alkaline phosphatase (by 66.67%, 26.58%, respectively). The nitrate content in cabbage under the treatment of ridge Fenlong 40 cm was significantly decreased than that under the treatment of flat rotary plowing by 23.54%, yet the contents of soluble sugar, vitamin C and soluble protein were significantly increased by 34.42%, 21.69%, 49.39%, respectively, and the leafy head weight per plant and yield were significantly increased by 14.50% and 13.59%, respectively. In conclusion, ridge Fenlong 40 cm was the best tillage method in the experiment conditions, as it could improve the physiochemical properties of soil, enhance the soil nutrients content and the activities of soil enzymes, and improve the quality and yield of cabbage.
