Effects of Different Sowing Depths on Seedling Characters and Yield of Maize under No-tillage Conditions

In order to find a suitable sowing depth for maize under no-tillage conditions, Zhengda619, Dika008 and Yumeitou105 were taken as experimental materials to study the effects of different sowing depths on emergence force, emergence rate, uniformity, lodging resistance and yield of maize. The results showed that for each maize variety and under the no-tillage conditions, when sowing depth was 5~8 cm, the emergence rate was the highest, the lodging resistance and the uniformity were the best; when sowing depth was 3~8 cm, the maize yield was relatively higher. So, under the no-tillage conditions, the optimal sowing depth for maize was 5~8 cm, which was beneficial to increasing the yield and benefit of maize.