据我们试验,在给大豆施大量农家肥(或再加施氮素化肥)的情况下,施用方式以撒施为宜,并应控制磷肥的用量。一、坚持撒施由试验得知,在亩施农家肥(猪圈粪)万斤或再搭配一定数量的硫酸铵做底肥的情况下,撒施的比条施的明显增产,增产13.5—25.4％,平均增产19.5％。为什么撒施比条施增产呢?这是因为,在施肥数量大的情况下,条施肥料在垄体中成条状分布,使肥料和大豆根系的接触面积相对减小,不仅主根和肥料的接触时间短,而且侧根与肥料的接触时间也不长。另外,大豆多为旱作,肥料的有效养分运动距离短,因此条施不便于被大豆的根系吸收。肥料撒施则与条施不同,撒施的肥料均匀地分布在垄体中,整个根 According to our experiments, in the case of applying a large amount of manure to soybean (or adding nitrogenous fertilizer), the application method is suitable for spreading and the amount of phosphate fertilizer should be controlled. First, adhere to spreading test learned that, in the Mushi farm manure (pig circle manure) kg or with a certain amount of ammonium sulfate to do the case of base fertilizer, sprinkling than the obvious increase in production, increase 13.5-25.4 %, An average increase of 19.5%. Why sowing than the provisions of yield? This is because, in the case of a large number of fertilizers, fertilizer strips in the ridge in a strip distribution, so that fertilizer and soybean root contact area is relatively reduced, not only the main root and fertilizer Short contact time, and lateral root and fertilizer contact time is not long. In addition, mostly soybeans for dry farming, fertilizer effective nutrient movement distance is short, so the facilities are not easy to be absorbed by the roots of soybeans. Fertilization is different with the application of fertilizer, spreading the fertilizer evenly distributed in the ridge body, the entire root