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一波尔多液的性质和作用波尔多液的性质,通常有酸性、中性和碱性三种。以碱性者为佳,如呈弱酸性或酸性反应,则易于沉淀而生药害,波尔多液的性状,和它的变化,极为复杂,说法不一,但自1907年皮卡林发表他的报告以后,一般均认为波尔多液的沉淀物,是一种碱性硫酸铜,对寄主组织无害,但在寄主表面能逐渐分解,产生可溶性的硫酸铜等化合物而起杀菌作用,特别是在病菌胞子发芽时最为有效,在寄主表面之沉淀物,常
A Bordeaux mixture of nature and role Bordeaux mixture of nature, usually acidic, neutral and alkaline three. Alkaline is better, such as weakly acidic or acidic reaction, it is easy to precipitate and produce pesticides, Bordeaux mixture of traits, and its changes, extremely complicated, different opinions, but since 1987 Picatin published his report Later, it is generally believed that the precipitate of Bordeaux mixture is an alkaline copper sulphate, which is harmless to the host tissue, but can gradually decompose on the host surface to produce a compound such as soluble copper sulfate to play a bactericidal effect, When germinating the most effective in the host surface sediment, often