结果表明，边际效应指数可作为选择耐密马铃薯品种和确定马铃薯品种种植密度的指标。

The results showed that the marginal effect index could be used as a choice for tolerant dense planting potato breed and as a parameter of potato plant density.

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结果表明： （1）边际效应主要影响有效穗、秕粒数，其边际效应指数值分别为1.6564．和1．4034；

The results showed that : (1) The effective tillering and bligthed grains were affected by the marginal effect, its marginal effect index was 1.6564 and 1.4034;

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结果表明： （1）边际效应主要影响有效穗、秕粒数，其边际效应指数值分别为1.6564．和1．4034；

The results showed that : (1) The effective tillering and bligthed grains were affected by the marginal effect, its marginal effect index was 1.6564 and 1.4034;

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