“施肥制度”应泛指在一定气候条件下,适应栽培植物需要的肥料种类、数量、施用时期和方法以及与之相应的土壤管理措施。每种植物的施肥制度皆有其一定的条件性。我们应该通过区域试验来探索每种植物因地制宜的施肥制度,以使单位肥料的施用能获得更高额的产量和经济报酬。但在施肥制度试验中,由于各种因素间的综合影响,用一个完整的复合试验方案来研究这个问题,必然会使处理过于复杂,且单因子的研究结果显然不能机械地运用在它们的组合上。因此,我们在研究棉花施肥制度时,先行归纳了当地原有的施肥经验,进而采用了综合试验法,把某些已有良效 “Fertilization system” should broadly refer to the type, amount, period and method of fertilizers and corresponding soil management measures that are appropriate to the cultivated plants under certain climatic conditions. The fertilization system of each plant has its own conditions. We should use regional trials to explore the proper application of fertilizers for each plant so that higher rates of output and financial compensation can be achieved for unit fertilizer applications. However, in the experiment of fertilization system, due to the comprehensive influence of all kinds of factors, to study this problem with a complete composite experimental scheme will inevitably make the process too complicated, and the result of single factor apparently can not be used mechanically in their combination on. Therefore, when we study the cotton fertilization system, we first summarize the original fertilization experience in the area, and then use the comprehensive test method to put some of the existing good effects