我省近年小麦面积约300万亩,其中薯麦制小麦达150万亩以上。全省小麦平均亩产100公斤左右,而薯麦制小麦不到100公斤,是各种栽培制度中最低的。为弄清薯麦制小麦的低产原因,我们于1984～1986年连续三年对我省薯麦制小麦面积最大的县——新化县的小麦生产进行了调查,本文以这个调查为基础,就薯麦制小麦的低产原因开展讨论。 一、穗数太少 In recent years, the province has an area of ​​about 3 million mu of wheat, of which more than 1.5 million mu are made of potato. The average output of wheat in the province is about 100 kg per mu, while less than 100 kg of potato is the lowest among all cultivation systems. In order to find out the reason for the low yield of potato and wheat, we conducted a survey on the wheat production in Xinhua County, the largest potato producing wheat in our province, from 1984 to 1986 for three consecutive years. Based on this investigation, Discussion on the causes of low yield of potato products. First, too few spikes