1. The precise seed drill is suitable for tilled field 2. It can drill corn, soybean, sorghum, cotton and oil sunflower 2BQ-4 ... kind of multi-functional integral agricultural machine. It is suitable for drilling and fertilizing on the ploughed or tided field. By ... plate to change the distance of seed, it can precisely drill corn, soybean, sorghum, cotton and oil sunflower. Fertilizing, ditching, ...