我国经济已由高速增长阶段转向高质量发展阶段,十九大报告中提出把"更高质量、更有效率、更加公平、更可持续"作为未来发展目标.农业机械化方面也是如此,没有农业机械化就没有我国的农业农村现代化,在新阶段推动农业机械化高质量发展,是加快推进农业农村现代化、全面实施乡村振兴战略的必然要求,也是农业机械化自身发展的必然选择.

In order to provide technological supports for conservation tillage in Jiaodong Peninsula,the effects of conservation tillage on photosynthetic characteristics and yield of winter wheat were studied in dry land.There were four treatments of conventional tillage(CT)、straw returning no-tillage(NT1)、all-pole straw returning no-tillage(NT2)、straw returning and subsoiling no-tillage(NTS).Photosynthetic indexes of winter wheat after anthesis were determined and yield components were investigated.The results showed that after anthesis the leaf area index,chlorophyll content of flag leaf and photosynthesis rate of winter wheat under conservation tillage were higher than CT treatment,and the higher values lasted longer time;the photosynthetic function period was prolonged,grain filling rate was improved,therefore,higher grain number per spike and 1000-grain weight were obtained,in which NTSS treatment was the best in the trial,however,conventional tillage decreased spike number with 240 million / ha less than conventional farming.The performance of the yield was as NTSS was the highest,then CT and NT2,and NT1.And it shows that combination of subsoiling technique and straw returning is a good drought prevention technique,and it can improve the yield potential efficiently under conservation tillage in dry land and reach higher economic benefit.