洋芋是我区主要粮食作物之一,但二半山以下地区,由于种性退化不能就地留种,每年向高山调运种薯达1500万斤以上,投入大量人力、物力、财力。对农业生产的发展不利。一九五八年以来,在总路线、大跃进、人民公社三面红旗的光辉照耀下,广大贫下中农采用了夏播的办法,证明夏播留种可以显著提高产量,超过高山换入的种子。是防 Potato is one of the main food crops in our region. However, due to the degenerative species can not be planted in the area below half a hill, more than 15 million catties of potato are transported to the mountains annually, putting a lot of manpower, material resources and financial resources into it. Adverse to the development of agricultural production. Since 1958, under the brilliance of the three red flags of the general route, the Great Leap Forward and the people’s communes, the vast majority of poor and middle-income peasants adopted the summer sowing method to prove that seeds planted in summer sowing could significantly increase their output and surpass the alpine exchange. It is anti