套种夏玉米实现亩产７００至７５０公斤的配套技术要点唐山市新区从１９９３年始，对小麦套种夏玉米实现亩产７００公斤以上的高产配套技术措施，进行了试验示范，并取得了初步成果。据田间调查。１９９４年１２０００亩大面积示范田，比对照田平均增产３０．２％，达到７... Intercropping of summer maize 700-750 kilograms per kilogram of supporting technical points Tangshan New District from 1993 onwards, the wheat intercropping summer maize to achieve more than 700 kilograms per mu of high-yielding supporting technical measures, conducted pilot demonstration and achieved initial results. According to field investigation. In 1994 12000 acres of large-scale demonstration field, compared with the control field average yield of 30.2%, reaching 7 ...