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连续三年调查分析证明,潍坊地区棉苗根病的主要种类为红腐病(Fusa-rium spp.)和炭疽病(Colletotrichum gossypii)。通过对14种药剂(复合剂)室内毒力测定、接菌盆栽试验,找出多邻混剂(多菌灵+邻酰胺1:1)对红腐病菌和炭疽病菌毒力最高,防治效果最好,特别对红腐病防效尤为突出,显著优于五赛合剂。继而进行田间小区试验和大田示范,证明防效良好,操作简便,成本较低,群众欢迎。
The investigation and analysis for three consecutive years proved that the main species of cotton seedling root blight in Weifang is Fusa-rium spp. And Colletotrichum gossypii. Through the indoor toxicity test and the inoculation pot experiment of 14 kinds of agents (compound), it was found that the multi-neighbor mixture (carbendazim + ortho-amide 1: 1) had the highest virulence to R. solani and anthracnose and the best control effect Good, especially for the prevention and treatment of red rot is particularly prominent, significantly better than five match mixture. Followed by field plot test and Daejeon demonstration, proof of good effect, easy to operate, lower cost, the masses welcome.