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在新疆北疆采用包含正交设计的方案进行了多点肥料试验,建立了不同地理尺度下的综合施肥模型和肥料效应函数方程,通过校验试验对综合施肥模型与肥料效应函数方程施肥推荐施肥效果进行了比较研究。试验采用相同的试验设计在2000-2002年间进行,每年试验点数为31个。研究结果表明,通过趋势系数可以建立包括地点变量的综合肥料效应方程,回归方程各参数有明确的肥料学意义。不同地理尺度下建立的综合施肥模型都可以有效地进行施肥推荐。和传统的肥料效应函数方程相比,综合施肥模型的氮素推荐量与土壤碱解氮或有机质含量呈显著负相关,表明方程可以根据土壤供氮能力调节施氮量,在小尺度下尤其如此。综合施肥模型磷肥推荐量显著低于肥料效应函数方程推荐量,其推荐质量高于肥料效应函数方程。小尺度下综合施肥模型的推荐量比大尺度下综合施肥模型精确度更高,但两种施肥模型都优于肥料效应函数方程。
In the north of Xinjiang, a multi-point fertilizers experiment was carried out by using the orthogonal design. Fertilization function equations were established under different geography scales. The fertilization function was formulated by fertilization model and fertilizer effect function equation The effect of a comparative study. The test was conducted using the same test design between 2000 and 2002, with 31 test points per year. The results show that the comprehensive fertilizer effect equation including the site variables can be established through the trend coefficient, and the parameters of the regression equation have a clear significance in fertilizer science. The integrated fertilization model established under different geographical scales can effectively recommend fertilization. Compared with the traditional fertilizer effect function equation, the nitrogen recommendation of the integrated fertilization model is significantly negatively correlated with the content of soil alkali-hydrolyzable nitrogen or organic matter, indicating that the equation can adjust the amount of nitrogen applied according to soil nitrogen supplying capacity, especially at the small scale . The recommended amount of phosphate fertilizer in comprehensive fertilization model was significantly lower than the recommended amount of fertilizer effect function equation, and the recommended quality was higher than that of fertilizer effect function equation. The recommended amount of integrated fertilization model at small scale is more accurate than the integrated fertilization model at large scale, but the two fertilization models are better than the fertilizer effect function equation.