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列当是一类恶性根寄生杂草,到目前为止我国报道有23种,其中分枝列当是危害最为严重的种类之一。近年来,分枝列当在新疆等地发生面积逐年增加,尤其在番茄上为害严重,重度田块寄生率达100%,1株番茄可被寄生逾50株列当,严重影响了番茄的产量和品质,经济损失严重。Br-2是河北省农林科学院植保所真菌病害研究室筛选出来的对分枝列当具有明显防治效果的生防镰刀菌。为了提高其对分枝列当的田间防治效果,
Column is a kind of malignant root parasitic weeds, so far there are 23 kinds of reports in our country, of which the branch is listed as one of the most harmful species. In recent years, the area of branches in Xinjiang and other places increased year by year, especially in tomato serious damage, severe field parasitic rate of 100%, a tomato can be parasitic more than 50 strains, seriously affecting the yield of tomatoes And quality, serious economic losses. Br-2 is the Fusarium of Fusarium that was screened out by the Fungal Diseases Research Institute of Plant Protection Institute of Hebei Academy of Agriculture and Forestry at the same time. In order to improve its control over the branching field,