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本文用重过磷酸钙和部分酸化磷矿粉进行田间试验,用其产量资料估计替换率,阐明了肥料与标准肥料比较的相对有效性。替换率用迭代回归进行估计,用5%的置信限指示估计精度。用替换率评价肥料,其基本假设是:标准肥料与替换肥料对作物生长的影响,仅仅是由于有效养分含量的不同。以这种假设作统计假设,进行测验。根据化学分析确定各种肥料施用量,用其田间试验结果计算各种肥料的替换率,再以这些替换率测定肥科的有效养分。
In this paper, a field experiment was conducted with heavy superphosphate and partially acidified phosphate rock, and the yield was used to estimate the replacement rate. The relative effectiveness of fertilizer compared with standard fertilizers was clarified. The replacement rate is estimated using iterative regression with a 5% confidence limit to indicate the estimation accuracy. The evaluation of fertilizers using replacement rates is based on the assumption that the effect of standard fertilizers and replacement fertilizers on crop growth is only due to the difference in available nutrients. With this hypothesis as a statistical hypothesis, test. According to chemical analysis to determine the amount of fertilizer application, with its field test results to calculate the replacement rate of various fertilizers, fertilizers and then use these rates of determination of the effective nutrients.