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本文比较了6种内吸性杀真菌剂对香蕉果实所产生的毒性、吸收和转移的情况。多菌灵和苯来特、涕必灵及青菌灵一样,对防治香蕉炭疽病菌( Colletotrichum musae )和香蕉枯萎病菌( Fusariums emitectum)的活性最强,效果最好;而甲基托布津和粉锈宁的活性最小。苯来特、多菌灵和涕必灵防治炭疽病,其用量敏感性的回归线变化梯度相同;青菌灵、甲基托布津和粉锈宁的变化梯度相同。香蕉果实对苯并咪唑和粉锈宁的吸收和转移,主要决定于药品的浓度,药品在空气中暴露的时间、药品的溶解度和药品的使用方法。随着苯来特使用浓度的增加,果皮表面的沉淀也增加,果皮接触药液2小时后,没有吸收的药品沉淀部分就可以检测出来;药品通过花梗(萼宿存)向上输送。当果指浸在药液中,果皮起主要吸收作用,药品残留主要在果颈和外果皮处。药品的溶解度、在果皮表面形成的沉淀和药品的吸收情况受药液PH值的影响。
In this paper, the toxicity, absorption and transfer of six kinds of systemic fungicides to banana fruit were compared. Carbendazim and bents, diphenhydramine and zingiberfen have the strongest activity against Colletotrichum musae and Fusariums emitectum, while thiophanate and triadimefon The activity of the smallest. Bentillate, Carbendazim and Thunbicide were used to control anthracnose. The regression line of the sensitivity of dosage was the same. The gradient of zingibenthrin, thiophanate methyl and dipyridamole were the same. Banana fruit on the absorption and transfer of benzimidazole and triadimenon, mainly depends on the concentration of drugs, drugs in the air exposure time, the solubility of drugs and the use of medicines. With the increase in the concentration of benezene, the precipitation on the surface of the peel also increased. After 2 hours from the peel contact with the solution, no precipitated portion of the absorbed drug was detected; the drug was transported upward through the pedicel (calyx persistence). When the fruit fingers immersed in the liquid, the peel plays a major role in absorption, the main drug residues in the neck and the outer pericarp. The solubility of the drug, the precipitate formed on the surface of the peel, and the absorption of the drug are affected by the pH of the liquid.