适期割秧技术对马铃薯主要病害的防治效果研究

Control Effect of Cutting Vine Technique on the Main Diseases of Potato

采用田间不同割秧期、不同留茬高度的试验方法,研究适期割秧技术对马铃薯的产量、品质影响及主要病害防治效果,结果表明：适宜提前割秧10d左右,适宜留茬高度5~10cm,减产率为2.97%~4.67%,淀粉含量降低2.45%~2.60%,与对照相比无显著差异性。适宜提前割秧10d左右,对马铃薯干腐病、茎基腐病、晚疫病、环腐病、黑胫病等种薯带菌传播的病害防效分别达59.29%、54.98%、57.48%、57.01%、52.75%。

Potato yield,quality and the main disease control effect by different cutting occasion and cutting height was studied.The results showed that harvesting of potato vine 10 day earlier at 0～5cm height from the ground lowed the contents of starch from 2.45% to 2.60% and decreased the yield from 4.10% to 5.20%.Compared with control,there was not significant different.If potato vine harvested about 10 days earlier,the control effect on the main diseases of potato had more significant different than that of control.The control effect of dry rot,crown rot,late blight,early blight,ring rot and blackleg were 59.29%,54.98%,57.48%,57.01% and 52.75%.