马铃薯与玉米不同套种模式对马铃薯青枯病的防治作用

Effects of different intercropping patterns of corns with potatoes on the control of Ralstonia solanacearum

田间调查比较马铃薯与玉米不同套种模式对马铃薯青枯病的控制作用结果表明,马铃薯套种玉米可减少青枯病病菌在株行间的蔓延,抑制马铃薯青枯病的发生。套种田块的青枯病发生率、大中薯减产率和单株减产量均低于纯种田块。马铃薯与玉米二套二种植模式对马铃薯青枯病的防治作用最为明显,发病率仅为纯种模式的60%左右。

Field surveys showed that the different intercropping patterns of co rns with potatoes had different effects on potato bacterial wilt (Ralstonia sola nacearum). The crop patterns of potatoes planted between corns could reduce the incidence of potato bacterial wilt, the ratio of potatoes versus corns by 2∶2 w ere most efficient, the incidence of potato bacterial wilt in the intercropping system was only 60 percent of CK, yield losses per both area and per plant were also significant less.