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通过试验证明,对氨基苯磺酸对小麦锈病的抑菌药量很低,对叶锈的完全抑菌药量为每克鲜叶390.6微克,对秆锈的完全抑菌药量为469.6微克。且施药的时间距锈菌侵入植株体内的时间越长,所需的抑菌药量越高。同时表明,对氨基苯磺酸在植株体内运转的速度很快,30小时后即可从第一叶运转至第二叶。对氨基苯磺酸在叶内存在较长时间后,仍能保有抑菌药量。此外,对氮基苯甲酸、腺嘌呤、胸腺核酸、酵母核酸及次黄嘌呤具有很强的对消对氨基苯磺酸抑制小麦锈病的作用。在叶锈的试验中,其对消作用分别为97.7%、91.7%,87.6%、85.7%和75.6%。核酸及其降解物的对消作用,是由于对氨基苯磺酸与核酸代谢的辅酶(叶酸)竞争抑制的结果。
It was proved by experiments that the antibacterial activity of p-aminobenzenesulfonic acid against wheat rust was very low, the total bacteriostasis against leaf rust was 390.6 μg per gram of fresh leaf and 469.6 μg for the stalk rust. And the time of spraying is longer from the time when rust invades the plant body, the higher the amount of antibacterial agent needed. At the same time, it showed that p-aminobenzenesulfonic acid works very fast in the plant body and runs from the first leaf to the second leaf after 30 hours. P-aminobenzenesulfonic acid in the leaves of a longer period of time, can still retain the amount of antibacterial drugs. In addition, p-nitrobenzoic acid, adenine, thymus nucleic acid, yeast nucleic acid and hypoxanthine have a strong inhibitory effect on the inhibition of wheat rust by aminobenzenesulfonic acid. In the leaf rust test, its elimination of the use of respectively 97.7%, 91.7%, 87.6%, 85.7% and 75.6%. The elimination of nucleic acids and their degradation products is due to the competitive inhibition of sulfanilic acid with the coenzyme (folic acid) that is metabolized by nucleic acids.