红岩公社发洪生产队地处高寒山区,农作物以玉米为主。这个队种植绿肥(苕子)已十多年。群众为避免绿肥发热烧苗,总结出一套种肥隔离的经验,叫做“三位施肥法”,具体做法是这样的:一、上位肥:把种子播在窝底,覆土1.5寸,施肥(肥料上面不再覆土),浇水。这种方法把肥料施在种子的上面,所以叫做上位肥。这个方法的好处是多次浇水不结壳,有利于抗旱保苗,适于干烧地。缺点是肥料裸露地面,肥分要损失一 Hongyan commune flood production team is located in the alpine region, mainly corn crops. This team has been planting green manure (prickly heat) for more than a decade. The masses in order to avoid the green manure fever burning seedlings, summed up a set of isolation experience of fertilizer, called “three fertilization method”, the specific approach is this: First, the upper fat: the seed sow in the bottom, covering 1.5 inches, fertilization Above no longer covered), watering. This method of fertilizer applied to the top of the seed, so called upper fat. The benefits of this method is repeatedly watering without crusting, is conducive to drought seedlings, suitable for dry ground. The disadvantage is that fertilizer bare ground, fertilizer loss to one