在吉林省中部黑土区菜园地上，研究了氮磷复合粒肥不同用量对茄子生长发育及产量的影响，筛选出氮磷复合粒肥最佳经济用量。结果表明：茄子氮磷复合粒肥最佳经济用量为９１８ｋｇ／ｈｍ２，对应最佳经济施肥量的产量为２９８３３８ｋｇ／ｈｍ２，其产投比为４１；同时获得了植株、果实营养的最佳诊断指标 The effect of nitrogen and phosphorus compound fertilizer on the growth and yield of eggplant was studied in the vegetable plot of the black soil area in the central part of Jilin Province. The optimum economic amount of nitrogen and phosphorus fertilizer was screened out. The results showed that the optimal economic value of nitrogen and phosphorus fertilizer was 918kg / hm2 and the optimum economic fertilizer was 298338kg / hm2, with a production-to-input ratio of 41 and the best diagnosis of plant and fruit nutrition index