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为了探讨测土施肥与回归施肥在同一条件下的实施效果及应掌握的关键,于1982～1986年在吉林省农安县进行了研究。供试土壤为黑钙土及黑钙土型砂土,作物为玉米。试验设:不施化肥;习惯施肥;测土施肥;回归施肥4个处理。结果表明,两种配方施肥的实施效果均好于习惯施肥,二者之间无明显差异,在生产条件下均可应用。采用测土施肥时应正确选用施肥量计算公式中的主要参数。采用回归施肥时则应严格掌握肥料效应函数方程式的拟合精度,并以采用多年试验获得的最佳施肥量的平均值为宜。
In order to investigate the effect of soil testing and fertilization and returning fertilization under the same conditions and the key to be mastered, a study was conducted in Nong’an County, Jilin Province from 1982 to 1986. The test soil for the chernozem and calcareous soil, the crop is corn. Experimental set: no fertilizer; accustomed to fertilization; soil testing and fertilization; return to fertilization 4 treatment. The results showed that the effect of two kinds of formula fertilization were better than that of conventional fertilization, no significant difference between the two, can be applied in the production conditions. When using soil testing and fertilization, the main parameters in the calculation formula of fertilizer amount should be correctly selected. When using regression fertilization, the fitting accuracy of the equation of fertilizer effect function should be strictly grasped, and it is appropriate to use the average value of the optimum fertilization amount obtained through years of experiments.