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1987～1994年在山东省泰安、临沂、莒南等地设点研究。夏直播覆膜花生生育期108d，大于10℃有效积温1513℃·d。叶龄与器官发育进程有一定对应关系。主茎高呈“S”型生长曲线。结荚中期LAI峰值达4．5，产量形成期平均LAI3.42。7月中始花，7月31日前为有效花期。8月10日前为有效针期。7月底开始形成幼果，9月初开始形成饱果。与春花生相比，夏直插花生的生育特点是，苗期短，有效花期短；饱果成熟期短，前期生长发育速度快，产量形成期分配系数高。
1987 to 1994 in Tai’an, Shandong Province, Linyi, Taonan and other places set up research. Summer planting covered peanut 108 days, greater than 10 ℃ effective accumulated temperature 1513 ℃ · d. Leaf age and organ development have a certain correspondence. The main stem height was “S” -type growth curve. The mid-stage LAI reached a peak of 4.5 and the average LAI3.42.7 during the period of formation of the pod reached the peak. The flowering stage was effective before July 31. August 10 for a valid needle. The end of July began to form young fruit, beginning in early September to form a full fruit. Compared with the spring peanut, the perennial perennial perennial peanut is characterized by its short seedling period and shortened effective flowering period. The full fruit maturity period is short, the early growth and development speed is high, and the distribution coefficient of the yield formation period is high.