夏玉米中后期管理的主要技术措施一、中期管理。时间约在７月上旬至８月下旬，即玉米拔节开始到抽雄。（一）玉米拔节至喇叭口期应保持田间土壤疏松，并宽行距间开沟，培土封根。（二）及时追肥并浇拔节水，做到水肥并用，玉米拔节后生长速度加快，对水肥特别敏感，大致施... The main technical measures of mid-late summer maize management One, medium-term management. The time is about early in July to late August, that is, corn jointing began to tasseled. (A) corn jointing to the bell mouth should keep the field loose soil, and wide-spacing ditching, soil sealing a root. (B) timely top-dressing and pouring water-saving, so that water and fertilizer and corn, corn growing faster after jointing, particularly sensitive to water and fertilizer, generally Shi ...