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我们在农业科学通讯1951年第六期上发表了一篇关于怎样用大豆粉乳化棉油的报导,乳剂是无问题可以用这方法作成的,可是他的展着和湿润性不好,因而0.5%这种棉油乳剂的杀虫效能不强,要增加乳剂的展着和湿润性,必需设法减低用水的表面张力,我们考虑到在乡间可能普遍找到,不怕硬水而价值便宜的展着剂,只有鸡蛋,我们又想到假如用豆粉乳化棉油而另外加上鸡蛋作展着剂,那又为什么不直接用鸡蛋去乳化棉油。根据我们初步试验的结果,用鸡蛋来乳化棉泊远比用豆粉要简单,制成的乳剂稳定,展着和湿润性较强,当然,费用是比较的贵些。田间观察所得的结果,0.5%棉油乳剂对于触杀棉花,番瓜及葫芦上的蚜虫都获得良好的效果,也未发现药害,用较高浓度油尚在试验中,因为这方法太简单了,我们希望本年能广泛的试用,尤其是菜园裹用在蔬菜蚜虫上,更希望把试用的效果告诉我们,作为再行改善工作中的依据。
We published a report on how to emulsify cottonseed oil with soy flour on the sixth issue of the Agricultural Science Newsletter, which shows that the emulsion is ready for use without any problem, but that its spreading and wetting properties are not good and thus 0.5 % This cotton oil emulsion insecticidal efficacy is not strong, to increase the performance and wettability of the emulsion, we must try to reduce the surface tension of water, we consider that in the country may be generally found, not afraid of hard water and cheap exhibition, Only eggs, we also think that if the use of soy milk and other eggs with eggs as a spreading agent, then why not directly use eggs to emulsify cottonseed oil. According to the results of our preliminary test, it is far easier to emulsify the cotton bolls than the soy flour. The emulsions are stable, well-developed and highly wettable. Of course, the cost is more expensive. As a result of field observations, 0.5% cottonseed oil had good effects on contact with aphids on cotton, pumpkin and cucurbit, and no phytotoxicity was observed, with higher concentrations of oil being tested because the method is too simple We hope this year can be extensively piloted. In particular, vegetable gardens are used for vegetable aphids and we hope we can tell the trial results as the basis for further improvement.