在确定作物施肥量这一研究领域里,除了传统的田间试验法和测土法这两种截然不同的方法以外,许多研究者企图把两者结合起来,发挥其各自的长处,如试验法的可靠性和测土法应用面广等优点.在这方面的研究中,有在世界范围内推广面较大的土壤养分丰缺指标法;有近几年许多学者研究的土壤养分及肥料效应函数方程法;有上海化工研究院谢泰云等 In the research field of determining the amount of crop fertilizer, in addition to the two distinct methods of traditional field and soil testing methods, many researchers try to combine the two to exert their own strengths, such as the experimental method Reliability and extensive application of soil testing, etc. In this research, there is an indicator method of soil nutrient abundance and extension that has a large promotion in the world. In recent years, many scholars have studied soil nutrient and fertilizer effect functions Equation method; Shanghai Chemical Industry Institute Xie Taiyun and so on