【摘要】 １９９１～１９９３年，在黔东南州黄砂泥、黄泥等１０个有代表性的土种上，不同生态条件下，采用回归设计，利用电子计算机技术对氮、磷、钾等养分进行了多年多点多因素多水平的水稻综合试验、示范研究，获得了不同气候条件下，不同地力水平的有代表性的不同最佳配方施肥方案。大田示范中，微机配方施肥与习惯施肥相比平均增产１２．７９％，平均每亩净增水稻６３．６ｋｇ，平均亩增纯收入５０．７４元。同时，还避免了偏施和盲目施用化肥的陋习，提高了化肥利用率，减少了化肥流失对环境造成的污染，取得了显著的经济和社会效益。更多还原

【Abstract】 The experiment of N,P and K rutrient was conducted on rice under different ecological environments and 10 types of typical soil(including the yellow sandy clay soil and ycllow clay soil by regressive design in 1991～1993.After the data were computerized in the light of regressive analysis,the varying optimum fertilization schemes corresponding to different climates and soil fertility were acquire.Compiring the computerized optimum fertilization with farmer’s practice,the rice yield per mu was increased by 12.79%(e.g.63.6kg)in the field demonstration,and the net income per mu by 50.74 yuan.In the meantime,the social benefit was notably gained by avoiding the incorrectness and blindness the application of chemical fertilizer,raising the utilization ratio of chemical更多还原