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采用三因素二水平正交试验设计，研究嫁接（Ａ）、密度（Ｂ）、整枝方式（Ｃ）对茄子产量的影响，结果表明：Ａ、Ｂ、Ｃ三因素对产量影响均达极显著，其中Ａ１极显著优于Ａ２，Ｂ２极显著优于Ｂ１，Ｃ２极显著优于Ｃ１，最优的处理组合为Ａ１Ｂ２Ｃ２。嫁接后的抗病效果是影响产量的主导因素，密度和整枝是保持群体处于较佳状态、使嫁接效果充分发挥的重要调节因素。在生长期较短的情况下，嫁接茄子需配合适当地密植，使其叶面积指数达到４以上，其群体增产效果明显。
The effects of grafting (A), density (B) and pruning method (C) on the yield of eggplant were studied by three factors and two levels of orthogonal design. The results showed that the effects of A, B and C factors on the yield were all significant, Among them, A1 was significantly better than A2, B2 was significantly better than B1, C2 was significantly better than C1, and the best treatment combination was A1B2C2. The effect of disease resistance after grafting is the dominant factor affecting the yield. Density and pruning are the important regulatory factors that keep the population in good condition and give full play to the grafting effect. In the case of a short growing season, grafted eggplant should be properly and closely planted to make the leaf area index of 4 or more, and its yield increase effect is obvious.