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最近参加了两次北方旱粮区有关禾谷类黑穗病防治研究的座谈会,听到不少黑穗病的发生危害情况,很值得重视,应迅速采取措施解决它。下边谈谈一些看法,供参考。 一、禾谷类黑穗病的发生、回升和为害情况 我国解放初期,黑穗病平均发病率在8％左右,严重的地块达70％,是当时重点研究解决的主要病害之一。后来推广了铜制剂和汞制剂赛力散等拌种剂,加上更换了一批抗病优良品种,到六十年代末期,种子传染的黑穗病,已压低到0.3％以下,如小麦腥黑穗病和谷子粒黑穗病等,几乎不易找到。最近根据北方十一省,区67个县(旗)黑穗
Recently, I participated in two symposia on the research on the prevention and treatment of cereal smuts in northern dry grain areas. It is worth noting how many smuts should be harmed. We should take prompt measures to solve them. Here to talk about some views for reference. I. Occurrence, recovery and damage of cereal smut In the early liberation period of China, the average incidence of smut was about 8% and the serious land mass was 70%, which was one of the major diseases that were mainly studied and solved at that time. Later, the promotion of the copper preparation and the mercury preparation Saracea and other seed dressing, with a replacement of a number of excellent disease-resistant varieties, to the late sixties, seed-borne smut has been reduced to below 0.3%, such as wheat fishy Smut and grain smut, almost hard to find. Recently according to the northern eleven provinces, 67 counties (banners) black spike