我国大中型小麦施肥播种机绝大多数都有种箱和肥箱,以使种子和化肥分开,而播入土壤后种子和肥料却容易混合在一起,这种施肥形式不但使施用化肥的品种和数量受到制约,同时也因为种子和肥料间隔太近容易造成烧种、烧苗,形成缺苗断垄。另外,也因化肥没有深施到小麦种子侧下方恰到好处的位置(3～6cm),所以不能充分发挥肥效,导致化肥的流失浪费。目前大面积推广的小麦精量、半精量机械化播种技 Most large and medium-sized wheat fertilization planters in our country have kind of boxes and fat boxes to separate seeds and chemical fertilizers. However, seeds and fertilizers are easy to be mixed together when they are sown into the soil. This type of fertilization not only makes the varieties and The number is subject to constraints, but also because of the close spacing of seeds and fertilizers are likely to cause burning seedlings, seedlings, the formation of missing seedlings broken ridge. In addition, because fertilizer is not applied to the wheat seed just below the right place (3 ~ 6cm), it can not give full play to fertilizer, resulting in the loss of fertilizer loss. The current large area to promote the wheat fine, semi-precision mechanized planting techniques