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马铃薯是我区四大粮食作物之一,主要分布在高寒、干旱的南部山区。近年来,由于马铃薯病害,特别是病毒病种类日益增多,株系或生理小种日趋复杂,致使我区马铃薯单产明显下降。1976-1984年在一市九县的366块马铃薯地里抽样调查,病毒病发病率占44.34％,全区马铃薯单产已由1950-1956年的581.7公斤下降到80年代的308.9公斤(五年平均亩产)。
Potato is one of the four major grain crops in our district, mainly distributed in the alpine and arid southern mountainous areas. In recent years, potato diseases, especially the growing number of virus diseases, strains or physiological races become increasingly complicated, resulting in a significant decline in potato yield in our region. In 1976-1984, sampling was conducted in 366 potato fields in nine counties of one city. The incidence of virus diseases accounted for 44.34%. The yield of potato in the whole region dropped from 581.7 kg in 1950-95 to 308.9 kg in the 1980s (five-year average Mu).