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目前,九二○应用在农、林生产上,大多取得良好效果。但也有因施用方法不当,效果不明显,甚至起反作用。因此,向群众普及九二○科学施用技术,很有必要。 一、九二○的性质:九二○为小型塑料袋装,无色结晶粉末(也有水剂)。它不溶于水,而溶于醇类、丙酮、醋酸乙脂、冰醋酸和pH6.2的磷酸缓冲液中。在较低的温度和酸性条件下相对稳定,遇碱便中和失效。它最初是从水稻恶苗病的病菌(赤霉菌)中分离出来的,是恶苗病菌
At present, nine two ○ ○ application in agriculture, forestry production, mostly achieved good results. But also because of improper application method, the effect is not obvious, and even counterproductive. Therefore, it is necessary to popularize the science and technology for the 1990s with the masses. One, the nature of 920: 920 for small plastic bags, colorless crystalline powder (also have water). It is insoluble in water but soluble in alcohols, acetone, ethyl acetate, glacial acetic acid and pH 6.2 phosphate buffer. Relatively stable at lower temperatures and acidic conditions, the case of alkaline neutralization failure. It was originally isolated from a bacterium (Gibberella) which is a bacterium of rice blast disease,