Preliminary study on minimum tillage with water saving technology and implement for paddy field

In the paper, a brand-new method of tillage and soil preparation for paddy field was discussed, the method using a special rototiller to rotary hoeing field in strip, instead of the traditional moldboard plow or rotary tillage. The characteristics of this tillage method are as follows: first, it can reduce the power consumption and the operation cost significantly comparing to traditional tillage and soil preparation for paddy field. For the adoption of new strip minimum tillage, soil humifying and rice seedling transplanting, the four operations of harrowing, smashing, leveling and dragging paddy residue were canceled, and the power consumption was reduced, the cost for soil preparation was saved by 50% to 60%. Second, compared to traditional soil preparation, the wastage of water for dunking field was saved by 30% to 40%, thus, it is a new and high effective technology for saving water. Third, it can curtail the period of tillage and soil preparation for paddy field from the primary 10～15 days to 1～2 days. Fourth, it realized the conservation tillage by reduced tillage and putting rootstalk and part of straws back into field. Fifth, the temperature of the tillage layer heightened 0.5～0.8℃, and increased outputs by 8%～18%(based on the output reports of comparative fields). This technology is an innovation and has a great reference for the development of paddy production.