1998～ 1 999年进行了地膜马铃薯田杂草发生与防治研究 ,结果表明 ,地膜马铃薯田杂草有 1 0科 1 7种 ,主要优势种为猪殃殃、婆婆纳、看麦娘。播后约 2 0d田间有一个明显的出草高峰。杂草防除每 6 6 7m2 用 33%施田补2 0 0ml、48%氟乐灵 1 0 0ml喷雾 ,防效达 90 %以上 The occurrence and control of weeds in mulched potato fields from 1998 to 1999 were studied. The results showed that there were 10 families and 17 species of weeds in the mulched potato fields. The main dominant species were Galium aparine, Veronica and Amanita. About 20 days after sowing, there was a clear peak in the grass field. Weed control every 6 6 7m2 33% Shi Tian fill 2 0 0ml, 48% trifluralin 1000 spray, the effect of more than 90%