肥料的施用效应往往与土壤养分走向极为相关。从笔者多年的观察和检测来看,农作物施用肥料后的养分走向大体上分为四个方面:一是养分被农作物有效地吸收利用;二是养分分解后部分呈气态挥发;三是每次降雨后,养分随雨水流失;四是部分养分被土壤吸附固定,呈不可供给状态。从肥料的 Fertilizer application effects are often closely related to soil nutrient trends. From the author’s observations and tests for many years, the nutrient trend of crops after applying fertilizer can be roughly divided into four aspects: first, nutrients are effectively absorbed and utilized by crops; second, part of the nutrient is volatilized after being decomposed; thirdly, After the loss of nutrients with rain; Fourth, part of the nutrients adsorbed by the soil fixed, was not available. From the fertilizer