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1991年在我省春麦产区景泰、兰州、临潭,冬麦产区庆阳、平凉、甘谷、成县等地共采集小麦根病标样200余份。经室内病原分离、致病性测定、田间设(?)系统观察结果表明:我省小麦根病病原种类在不同生态区和小麦不同生育期是有一定差异的,但其主要是由全蚀病菌(Caeumannomyces graminis)、离蠕孢(Bipolaris spp.)、镰刀菌(Fusarium spp.)、丝核菌(Rhizoctonia spp.)、链格孢菌(Alternaria spp.)等病原复合侵染所致。而全蚀病菌为主要致病菌,其致病力最强、分离频率最高;其次为根腐离蠕孢菌。田间使用药剂防治都有一定的防病增产效果。同样药剂兑土沟施比拌种效果好。药剂防治中以15％粉锈宁药剂兑土沟施防病增产效果最好。
In 1991, a total of more than 200 samples of wheat root disease were collected from Jingtai, Lanzhou, Lintang and Dongmai producing areas in Qingmai producing areas in Qingyang, Pingliang, Gangu and Chengxian areas in our province. The indoor pathogen isolation, pathogenicity determination, field setting (?) System observation results show that: the province of wheat root cause pathogen species in different ecological regions and wheat at different growth stages are some differences, but mainly by the total eclipse bacteria Caeumannomyces graminis, Bipolaris spp., Fusarium spp., Rhizoctonia spp., Alternaria spp. And the like. The total eclipse bacteria as the main pathogen, its virulence strongest, the highest frequency of separation; followed by root rot from Sporisorium. Field use of pharmaceutical control have a certain effect of disease prevention and increase production. The same agent against soil ditch Shi than seed dressing effect. Pharmacokinetic control in 15% of the powder rust Ning anti-ditch anti-disease drugs yield the best.