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本文以酶化学法测定 E—1059在植物内的动态,实验室内采用 Hestrin 比色法,田间试验用滴定法。试验结果证实,植物种类、年龄、生理状态、外界环境条件及不同施用方法对残效期和残留量均有显著的影响。幼嫩新陈代谢旺盛的植株以及受日光直接照射温度较高的植株上,E—1059的逸失较快,反之则维持药效较久。喷药后5天于棉花子叶上残留有36.9%的药量,而幼芽上仅剩余7.4%。不同的施用方法对于 E—1059动态的影响颇大,如预先刮除树皮后用毒环施药,药效显示较慢,但维持时间长久,残效期长,施药后50天尚残留有37.5ppm;而喷雾后能立即显示药效,但维持的时间暂短,20天后仅残留3.5ppm。E—1059喷射于叶面后,立即进行挥发分解作用,在棉花子叶上4小时后即逸失药量达50%,初嫩叶芽上逸失更多;渗入叶组织的药量约占总药量的34%,渗入作用在一昼夜间基本完成。喷药后新长出的幼嫩新叶内极少有传导的药剂,证实喷雾后叶片间的传导作用极小,但用 E-1059处理树干,自下向上的传导作用是较强的。
In this paper, enzyme kinetics of E-1059 in plants was determined by enzymatic chemistry method. Hestrin colorimetric method was used in laboratory and titration method was used in field experiments. The test results confirmed that plant species, age, physiological status, external environmental conditions and different application methods have significant effects on the residual and residual amount. Young and vigorous metabolism of plants and plants exposed to high temperatures by direct sunlight, E-1059 escape faster, otherwise, to maintain long-term efficacy. Five days after spraying, 36.9% of the drug remained on the cotton cotyledons while only 7.4% remained on the shoots. Different application methods have great influence on the dynamic of E-1059. For example, the drug is poisoned slowly after the bark is scraped off in advance, but the maintenance time is long and the residual period is long. 37.5ppm; and spray immediately after the show efficacy, but the maintenance time is short, leaving only 3.5ppm after 20 days. E-1059 sprayed on the foliage, immediately volatile decomposition of the cotton cotyledons 4 hours after the escape of dose of 50%, the early tender leaves on the more to escape more; infiltration of leaf tissue dosage about the total amount of drug 34%, infiltration effect basically completed in a day and night. After spraying the new newly emerged young new leaf very conductive agent, confirmed the spray after the conduction between the leaves is minimal, but with the E-1059 treatment of the trunk, conduction from the bottom up is stronger.