油橄榄根腐病一年四季均有发生,但主要发生在春夏两季。因此时雨水较多,在地下水位高,地势低洼的山脚与山窝,土壤含水量大,常易发病。此外,土壤酸性过强,瘠薄板结、通气性差的也易感病。根据我们近几年来的经验,在油橄榄发病后,可于晴天挖开病株根系外围泥土,切除病根,外露2-3天后,用1:50退菌特药土雍蔸,回填疏松肥沃的客土。然后,每隔十天浇一次石灰水。由于植株感病初期不易发现,应采取 Olive root rot occurs throughout the year, but mainly in spring and summer. Therefore, when the rain is more, in the high groundwater, low lying foot and nest, soil moisture content, often easy to disease. In addition, the soil is too acidic, barren plate junction, poor ventilation is also susceptible. According to our experience in recent years, after the onset of the olive, we can dig the soil around the roots of diseased plants in sunny days and remove the diseased roots. After exposing for 2-3 days, we use the 50% earth. Then, pour lime water every ten days. As the initial susceptible plant disease is not easy to find, should be taken