For the purpose of systematic study of the effect of summer plowing on the yield of winter wheat,field experiments were made in the central part of Shensi Province,China.

• 正>夏耕晒垡是我国北方产麦地区农民在长期生产实践过程中创造出来的一项恢复地力、保证小麦稳产增产的重要耕作措施。