当前,北方春玉米区生产上主推的玉米杂交种制种时多为父母本同期播种,个别的需要错期播种。无论是同期播种,还是错期播种,随着年份不同,由于受气候、土壤和田间管理水平的影响都有花期不遇的可能性。花期不遇不仅严重影响种子田的产量,同时影响种子的质量。为了解决这个问题,必须对玉米制种花期进行调节。 At present, the production of corn hybrids in the spring maize area in the north is mostly planted by parents during the same period, and individual needs to be planted in the wrong time. Whether it is sowing in the same period or planting in the wrong time, with different years, there is a possibility that the flowering season will not be affected due to the influence of climate, soil and field management. Not only does flowering not only seriously affect the yield of seed fields, but also affect the quality of the seeds. In order to solve this problem, it is necessary to regulate the flowering season of maize.