Abstract:

The studies were conducted on the effect of different seeding manner on the seedling emergence over-winter and yield of the wheat cultivar “Jimai 22” under the maize-wheat double cropping system and maize stalk full returned to the fields in the Huang-Huai Plain. The results showed that sowing rate is the main reason which significantly affected the seedling rate, over-winter rate, yield, and yield composition. The affecting force is more than 30%; Compacting has extremely effect for the over-winter rate, the affecting force is 14.02%; Sowing depth has no any extremely effect for all the test index. Combining the sowing rate, sowing depth, and compacting, it can be concluded that the best combination is 2250000/hm2 seedling，4-5cm sowing depth, and compacting in order to make sure the seedling emergence rate, over-winter rate and grain yield.