[目的]研究夏播玉米叶片数、积温及其对生育期的影响.[方法]研究丹玉6号晚熟玉米,不同播种方法、不同播期的叶片总数、叶片伸展期所需天数积温、生育期和适宜追肥期.[结果]麦套玉米,栽培因素使玉米达不到应有的叶片总数,说明环境条件不利于玉米生长发育,影响其产量.[结论]改革现有的播种方法,改麦田套种玉米为麦收后直播.%[Objective]The research aimed to study the influence of summer seeding corn number of leaves, accumulated temperature to period. [Method]The leaves total number, leaf extension period required days accumulated temperature, growth period and appropriate top application period with different sowing method and different sowing stage of Dan jade 6 late corn were researched. [ Result] Wheat set of corn, the cultivation factors can not reach the total due leaves of corn, showed the environmental condition against corn growth, affect the yield. [Conclusion]Reform the current sowing method, change catcher intercropping maize to direct seeding after the wheat harvest.
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