Before sowing or planting crops, rough ground must be cleaned and weeds removed.
在播种或种庄稼之前，必须将土地清理平整并将杂草铲除。
2
This has involved visits to farms, instructions in planting and sowing techniques and even driving tractors!
培训内容包括参观农场、介绍种植、播种技术，甚至还有驾驶拖拉机！
3
The suitable planting density and time of sowing are favor of optimum use of soil water and improving water use efficiency, and make potato increasing its output.