西双版纳加代繁殖玉米自交系４５６４００河南省滑县种子公司魏党振刘军平王天广为了加速玉米良种更新换代，我们每年冬季都要搞南繁工作，近年来全国各地南繁单位及繁种面积日渐增多，竞争加剧，造成地价高，隔离不便等许多问题。为了摆脱目前的局面，我们从实际出发经多... Xishuangbanna Jia Dai breeding corn inbred lines 456400 Henan Huaxian seed companies Wei Dangzhen Liu Junping Wang Tian Guang In order to accelerate the upgrading of improved varieties of corn, we have to work every year in the South Fanfan work in recent years throughout the country Fanfan unit and the variety of species Increasingly, competition is intensifying, causing many problems such as high land prices and inconvenience of isolation. In order to get rid of the current situation, we set out from the actual ...