从1959年起,我們在合浦县农科所进行紅薯有性杂交育种工作,几年来,共搞了303个組合,获得杂交种子15,000多粒,通过培育选择,初步选出有希望的品系200多个。其中“合浦67号”較稳产高产,小区試驗最高亩产3,670斤,比“不論春”增产了7.8％,一般产量此“无忧饥”增产57.3—64.8％,大田生产最高亩产达4,420斤,此“不論春”增产76.8％。种植面积逐年扩大,1961年只种10亩,到1965年已增至600 Since 1959, we conducted sexual crossbreeding of sweet potato in Hepu County Agricultural Science Institute. Over the past few years, we have engaged 303 combinations to obtain more than 15,000 hybrid seeds. Through breeding selection, we initially selected more than 200 promising varieties A Among them, “Hepu 67” was more stable and high-yielding, with the highest plot yield of 3,670 kg in plot test and an increase of 7.8% over “regardless of spring”. The general output of this “no hunger hunger” increased 57.3-64.8% and that of the field production reached 4,420 kg This “regardless of spring” increase 76.8%. The planted area has been expanded year by year, only 10 mu in 1961 and increased to 600 in 1965