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锈病是安徽省小麦生产上的重要病害,流行年份使小麦减产10—20%,局部严重地区甚至减产5成以上,因此,防治锈病是保证小麦稳产的主要措施之一.我们通过温室和田间试验证明盐酸苯肼对小麦锈病有良好的防治作用,但对植株有明显的药害.为了解决苯肼类化合物的药害问题,寻找新的更有效的防锈药剂,在温室测定了140多种苯肼衍生物或类似物对小麦锈病的疗效,证明苯肼甲酸乙酯(代号F_5)、苯肼基硫代甲酸乙酯(代号H_(10))、β-甲酰苯肼(代号H_(40))、β-甲酰-邻-乙基苯肼(代号H_(80))等对小麦叶锈病有良好的治疗作用;通过田间试验证明这几种苯肼类药剂的原粉以及不同规格的制剂对小麦秆锈病和条锈病均有良好的防治效果;其中H_(80)无药害,其余三种药害轻微.本文报道部分温室测定在安徽宿县、江苏句容两地进行的田间试验结果.
Rust disease is an important disease in wheat production in Anhui Province, the prevalence of wheat yield 10-20%, even in some serious areas or even cut more than 50%, therefore, to prevent rust is one of the main measures to ensure stable yield of wheat we passed the greenhouse and field trials Phenylhydrazine hydrochloride proves that wheat rust has a good control effect, but has obvious phytotoxicity to plants.In order to solve the problem of phytotoxicity of phenylhydrazine compounds and find new and more effective antirust agents, more than 140 species Phenylhydrazine derivatives or the like on the rust of wheat, it was proved that phenylhydrazinecarboxylate (code F_5), phenylhydrazinothionate (code H_ (10)), β-formylphenylhydrazine (code H_ 40)), β-formyl-o-ethylphenyl hydrazine (code H_ (80)) have a good therapeutic effect on wheat leaf rust. Through the field trials, it has been proved that the raw materials of these phenylhydrazine agents and their different specifications Of which had a good control effect on wheat stem rust and stripe rust, among which H_ (80) had no phytotoxicity and the other three were minor.We reported that in some greenhouses, the field trials in Suxian, Anhui Province and Jurong, Jiangsu Province, test results.