论文部分内容阅读
本文分析了速测土壤养分在平衡施肥技术中充分发挥作用应具备的条件。采用速测常规对照法和速测土壤养分田间试验法,建立速测土壤养分的丰缺指标;确定史旦福公式中的校正值。根据研究结果,证明速测土壤养分可以大面积推广,基层农技人员可依据土壤养分测定值用丰缺指标法或目标产量法指导农民配方施肥。
This paper analyzes the conditions that the soil nutrients in rapid testing should play in balanced fertilization. The conventional method of rapid testing and the field test of soil testing were applied to establish the index of abundance and deficiency of soil nutrients in rapid testing. The calibration value in the formula of Shi Danfu was determined. According to the research results, it is proved that the soil nutrients in rapid testing can be popularized in a large area. The grassroots agricultural technicians can use the method of abundance and deficiency index or the target yield method to guide the farmers to formula fertilize according to the measured values of soil nutrients.