一、选用早熟品种。罗兰德、东农 30 3、郑薯 6号、克新 4号等都是适合二季作和间作套种的理想品种。二、提早催芽晒种。马铃薯冬季窖贮 ,因温度低新陈代谢缓慢 ,出窖后马上切块播种 ,因早春地温低 ,一般出苗需时 30～ 4 0天 ,且出苗既慢又不齐。如果在播种前 2 0天出窖 ,放在 First, the choice of precocious varieties. Rowland, Dongnong 30 3, Zheng potato 6, Kexin 4 and so are suitable for intercropping and intercropping of the ideal varieties. Second, premature germination. Potato winter cellar storage, due to low temperature and slow metabolism, the cellar cut immediately after planting, due to low temperature in early spring, the general emergence takes 30 ~ 40 days, and the emergence of both slow and irregular. If the plantation 20 days before sowing, put in