实践证明,我省栽培马铃薯不能就地留种的主要原因,是沿用一季留种的老办法,种薯在夏季较高的温度条件下长期贮藏,造成种性退化。克服的办法就是,改一季留种为两季留种,(2季作)使能获得优质种薯,提高马铃薯产量。但在我省气候条件下,过去在推广两季留种中常因催芽技术未过关,发芽慢,误过了农时,使这项措施未能在生产上应用。一九七六年以来,我们经过多次试验,取得了冬季快速催芽成功。试验证明,采用两季留种,只要及时催出芽,由于种薯新鲜饱满不但能代替从东北一带调种的,而且还能显著增产,具体措施扼要介 Practice has proved that the main reason why the cultivated potato in our province can not be planted on the spot is to follow the old method of keeping the seed in one season. The seed potato is stored for a long time under the higher temperature in summer, resulting in the degenerative species. The way to overcome this is to change the remaining species for the second season to stay in the second season, and to enable them to obtain high quality seed and raise the yield of potato. However, in our province’s climatic conditions, the past two years in promoting the promotion of two kinds of medium-term non-routine germination technology, germination slow, mistaken for farming, so that this measure failed to apply in the production. Since 1976, after many tests, we have achieved rapid winter germination success. Tests show that the use of two seasons to stay species, as long as the timely reminder of buds, because the seed full of fresh and not only can replace the tune from the northeast region, but also significantly increased production, the specific measures