卓资县海拔高、气候冷凉、昼夜温差大,马铃薯病害轻,是我国种薯基地之一,每年种植面积20多万亩。近年来由于环腐病、病毒病蔓延危害,严重地影响了产量的提高。环腐病是从伤口侵入薯块而导致马铃薯发病的。我们认为,如果把过去的切块播种改为整薯播种,减少人为的传病机会,就会大大压缩发病程度。因此,1975年县农科所开始进行整薯播种试验,到 Zhuozi County, high altitude, cold climate, large temperature difference between day and night, light potato disease, is one of China’s seed base, an area of ​​more than 20 acres planted each year. In recent years due to ring rot disease, the spread of the virus damage, seriously affected the yield increase. Ring rot is caused by the invasion of potato tubers from the wound. We think it would greatly reduce the incidence of disease if the past cutting of seeding was changed to whole-potato planting to reduce the chances of human transmission. Therefore, in 1975 the county agricultural sciences began the whole potato planting test, to