1977-1980年,方城县作为岗丘地区低产县参加了省、地玉米“高、稳、低”科研和技术推广协作.四年来取得了一定成效.在此期间,笔者直接组织并参与了此项工作,现总结于下,供参考.方城县位于南阳盆地的东北边缘,现有耕地约159万亩,大部属于边山丘陵和缓岗丘陵,沿河平地不到三分之一.一、玉米生产的特点——低而不稳在玉米生产上,这里既是个老产区又是个低产区.夏播占65-70%.产量历来低于 From 1977 to 1980, Fangcheng County took part in the cooperation of scientific research and technology promotion of provincial, prefectural and maize “high, stable and low” in the low-yielding counties in Gangqiu area, and achieved some success in the past four years. In the meantime, Fangcheng County is located on the northeastern edge of the Nanyang Basin. The existing cultivated land is about 1.59 million mu. Most of the cultivated land belongs to the border hills and the hills with gentle hills, and less than one-third of the land along the plains First, the characteristics of corn production - low and unsteady in the corn production, where is both an old and a low-yielding areas. Summer sowing 65-70%. Yield has always been lower than