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大豆蚜(Aphis glycines M.)是我国北部大豆产区的主要害虫,目前在药剂防治上,应用666粉剂或液剂、对硫磷和烟草水等触杀药剂,都取导了一定的防治效果。但由于大豆蚜虫繁殖快,又多藏于卷曲叶片内,同时上述药剂的药效保持时间短,每次防治不可能消灭所有的蚜虫。施药后一部分未接触到药剂的蚜虫又迅速繁殖继续为害)需耍再次防治。在整个大豆生育期需喷撒2—3次药,才能控制危害。此时正值夏锄紧张时期,施药工具有限,水源不足,又兼后期防治时,豆株生长繁茂,施药不便,很难做到多次防治。 为了寻找高效残效期长的药剂,我所在1960年以前曾进行0.01—0.006％浓度的内吸磷防治大豆蚜虫的试验,由于浓度过低未获得良好效果。于1960—1962年又进行了单株、小区和大面积防治试验。鉴于文献报导,内吸磷在棉株上药效及其持久性取次于施用药剂有效成分的多少,本所进行了小容量高浓度快速的大面积防治试验。兹小结如下,仅供参考。
Soybean aphid (Aphis glycines M.) is a major pest in the northern soybean producing area of our country. At present, the application of 666 powder or liquid agent, paracetamol, tobacco water and other contact chemicals has led to some control effects. However, due to soybean aphids multiply fast, and more hidden in the curly leaves, while the pharmacological effects of these agents to maintain a short time, each control can not eliminate all the aphids. Aphids that have not been exposed to the medicament after the application of the drug rapidly propagate and continue to harm) need to be controlled again. Spread 2-3 times throughout the growing season of soybeans in order to control the damage. At this time when the summer hoe nervous period, limited application of tools, lack of water, but also the latter part of the prevention and treatment, the growth of lush bean plants, pesticide application inconvenience, it is difficult to do multiple control. In order to find a highly effective pesticide with long-term residual effect, my experiments on soybean aphid with 0.01-0.006% intra-uptake phosphorus had been conducted prior to 1960, and no good results were obtained due to the low concentration. In 1960-1962 another single plant, community and large area control test. As reported in the literature, the internal absorption of phosphorus in the cotton plant efficacy and durability of secondary application of the active ingredient, how much, the small-capacity high-concentration rapid large-scale prevention and control tests. Here is a summary, for reference only.