| 摘要: |
| 通过氮磷肥效反应二次多项式求得土壤氮磷养分当量（土壤养分供应量相当的肥料量），并得到土壤氮磷养分当量与作物不施肥产量之间极显著的指数回归关系，以估测土壤养分当量。以养分总量与作物产量进行回归，其模式各效应系数不受土壤有关养分含量的影响，可以建立生态区的平均模式。同时，可求得作物需要的最大养分量和最大施肥量（最大养分量与土壤养分当量之差）以指导推荐施肥。 |
| 关键词: 土壤养分，肥料养分，肥料效应，养分效应，效应模式，氮，磷，小麦 |
| DOI： |
| 分类号:S147.21 |
| 基金项目: |
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| Bio-Estimation Method for Quantities of Nutrient Supply by Soil and Its Application |
|
Yang Jiangfeng Yu Jianbuo Luo Hongbin
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| Abstract: |
| By utilizing fertilizer efficiency equation,the nutrient equivalent quantities of soil nitrogen and phosphorus were obtained(which is equivalent to the fertilizer quantities.)And then,the most significant exponential regression is also established between the nutrient equivalent quantities of soil and crop yields so as to estimate the nutrient equivalent quantities of soil.Bothe the total nutrient quantities and crop yields were regressed.As a result,each efficient coefficient was not affected by some related soil nutrients so that the avaerage model in the ecological zone can be established.At the same time, the nutrient critical values can be calculated.The naximum fertilizer quantities(nutrient critical value venus nutrient equivalent quantity of soil)needed for crop may be utilized to guide prescription fertilization. |
| Key words: soil nutrient,fertilizer nutrition,fertilizer efficiency,nutrient efficiency,efficient model,nitrogen,phosphorus,wheat |
