| Artificial transplanting was used as control treatment, the effect of 3 different mechanical planting modes （carpet mechanical transplanting）bowl-carpet mechanical transplanting and mechanical direct seeding 冤on rice yield was studied in Zhaoqing in 2011 to 2012. The results showed that : compared with artificial transplanting, mechanical direct seeding shortened the growth duration by about 15 days袁and the duration of mechanical transplanting was the same as artificial transplanting; compared with artificial transplanting, the rice yield of carpet mechanical transplanting, bowl-carpet mechanical transplanting and mechanical direct seeding decreased in 2010 and 2011, average daily production of carpet mechanical transplanting and bowl-carpet mechanical transplanting were lower than that of artificial transplanting, while that of mechanical direct seeding was higher than artificial transplanting in 2010 and 2011; the rice yield of carpet mechanical transplanting，bowl mechanical transplanting increased and mechanical direct seeding was the same as artificial transplanting in 2012; average daily production of mechanical planting methods were higher than that in the artificial transplanting in 2012. |
