“洋芋５６”适应性及配套技术初探洋芋在我县素有山区农民“半年粮”之称，面积占全县粮食总面积的２４．１％，产量占全县粮食总产量的２３．３％。多年来品种多、杂、乱（据不完全统计有３？个之多），导致种性退化，单产低而不稳。据此，我县自１９８９年秋从四川省彭... Potato “Adaptability and supporting technology Potato in my county known as mountain farmers” half a year, "said the area of ​​the county’s total area of ​​24.1% of the total output of grain production accounted for 23.3% of the county’s total food production, . Over the years many varieties, miscellaneous, chaos (according to incomplete statistics as many as 3), resulting in degenerative species, yield low and unstable. Accordingly, my county since the autumn of 1989 from Sichuan Province Peng ...