论文部分内容阅读
波尔多液是使用最早,应用最广的一种杀菌剂。它是用硫酸铜,生石灰、和水按一定比例配制成的。新配制的波尔多液是悬胶状。放一定时间后,逐渐出现沉淀,使胶体变质就不能使用了。治谷子“三病”的波尔多液,是用一斤硫酸铜、一斤生石灰,加水一百二十斤到二百斤的比例配成的,可防治一亩半到二亩谷子。配制时先准备三个缸,把硫酸铜用六十到一百斤水化在一个缸里。再用六十到一百斤水把生石灰化在另个缸里(先用少量水化开生石灰)。然后把化好的硫酸铜液和石灰
Bordeaux mixture is the earliest and most widely used fungicide. It is made of copper sulfate, quick lime, and water according to a certain proportion. Newly prepared Bordeaux mixture is suspension-like. Put a certain time, the gradual precipitation, the colloid deterioration can not be used. Treating millet “three diseases” of Bordeaux mixture, is a pound of copper sulfate, a pound of lime, add water one hundred twenty pounds to two hundred pounds of the ratio of dubbed, can prevent acre and a half to two mu of millet. Prepare the preparation of the first three cylinders, the copper sulfate with sixty to one hundred jins of hydration in a cylinder. Use another 60 to 100 jins of water to calcine in another tank (first lime with a small amount of hydration). Then the good copper sulfate solution and lime