Experimental study on 2BSSF-3 type of surface tillage and irrigating-sowing machine

In order to meet the demand of watering sowing intermittently in stubble field without tillage or in field with surface tillage in arid and semi-arid regions, the 2BSSF-3 type surface tillage and irrigating machine was designed. The field test results were analyzed. The results show that when the average irrigating water is 197.6 g every time, the flowing amount of water along ditches is very little. The flowing amount of water along ditches is relatively greater when the average irrigating is 387 g every time, and the border of wet section had joined, but the deepness of water seeping under seeds increased obviously. The test results under two different conditions of water-irrigation amount show that when the irrigating-sowing machine working at the speed of 0.59 m/s, and the designed distance between seeds is 297.4 mm , the average distance between seeds is 297.4 mm, the eligible rate is 94.7%; the average number of seeds every time is 1.89, the eligible rate is 97.2%, the re-sowing index is 1.82%, and the no-sowing index is 2.19%. When the irrigating-sowing machine working at the speed of 0.98 m/s, and the average distance between seeds is 311.2 mm, the eligible rate is 92.1%；the average number of seeds every time is 1.33, the eligible rate is 95.9%, the re-sowing index is 1.51%, and the no-sowing index is 2.67%. The sowing deepness can meet the demand of design; the average distance between seeds and the center of wet soil is all less than the designed number 20 mm, the eligible rate is 96%,and the apposition rate of water and seed is 99.7%. Every index can meet the demand of agronomy and design.