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通过对沟川地玉米氮、磷、有机肥用量的定量研究，建立了中等以上肥力沟川地玉米产量形成的施肥数学模型及最佳施肥组合方案，并确定了沟川地玉米氮、磷、有机肥作用效应顺序：氮肥＞磷肥＞有机肥。氮肥使用时间上以“一底一追”，施足底肥，重施拔节肥效果最好。实施最佳施肥方案，公顷产量达１０４３１０ｋｇ，比习惯施肥增产３７８％。
Based on the quantitative study on nitrogen, phosphorus and organic manure in the maize field in Duluan, a fertilization mathematic model and the optimum combination plan of fertilization for medium- Organic fertilizer effect sequence: nitrogen fertilizer> phosphate fertilizer> organic fertilizer. The use of nitrogen on the time to “a bottom-chase,” Shi Shi enough fat, re-apply the best section fat. Implementation of the best fertilization program, hectare yield 10431 0kg, 37.8% more than the conventional fertilization.