前言在越南江河三角洲(北纬21°海拔5米),马铃薯年种植面积为40,000—50,000公顷,70年代种植面积迅速增加。然而种薯发生了问题,在长大9个月酷熟的雨季期间(3——10月),由于高温的影响,种薯损失很大,质量下降,成本增加,因此,每年要从收获 Foreword In the Yangtze River Delta of Vietnam (latitude 21 ° 5 m above sea level), the annual potted area is 40,000-50,000 hectares and the area under cultivation in the 1970s is rapidly increasing. However, there was a problem with seed potatoes. During the 9 months of ripening rainy season (March to October), seed pots suffered a great loss due to the high temperature, resulting in a decrease in quality and an increase in costs. Therefore,