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农民购买化肥时很难识别真假化肥,下面提供一种在不具备化验设备的情况下的鉴别方法。一、颜色和形态优质化肥粒度和比重较均一,且表面光滑,颜色纯正。如俄罗斯产三元素复合肥(16-16-16)和美国二铵。而假化肥恰恰相反,肥料颗粒大小不均匀,粗糙。根据生产工艺的不同,化肥的颗粒大致有三种形状,一种是颗粒不规则,有油滑感,一般为转鼓造粒且经过表面包膜技术处理,有防潮及缓释作用;另一种圆形颗粒,有光泽和微孔,为塔式造粒且经过抛光处理;还有一种圆形颗粒,无光泽,为掺混方法或其它工艺生产。用手将化肥捏几下,仔细观察,看捏过后的化肥:是否有
Farmers to buy chemical fertilizers is very difficult to identify genuine and fake fertilizers, the following to provide a without the test equipment in the case of identification methods. First, the color and shape of high-quality fertilizer particle size and weight more uniform, and the surface is smooth, pure color. Such as the Russian three-element fertilizer (16-16-16) and the United States diammonium. The fake chemical fertilizer on the contrary, the uneven size of fertilizer particles, rough. According to the different production processes, fertilizer particles roughly have three shapes, one is irregular particles, a sense of slip, usually drum granulation and surface coating technology to deal with moisture and slow release effect; the other round Particles, shiny and microporous, are tower granulated and polished; there is also a round grain, dull, produced for blending or other processes. Fertilizers pinch a few hand, carefully observe the pinch after the fertilizer: whether it is