级差地租II是指由于在同一块土地上连续投资而提高了劳动生产率所产生的级差地租。为什么由农业资本家连续追加投资而提高了劳动生产率,从而产生出的超过平均利润的超额利润要转化成级差地租II,通行的解释容易产生一些含混不清的含义甚至歧义,需要进一步地明确。 Differential rent II refers to differential rent resulting from increased labor productivity due to continuous investment in the same land. Why the excessively profitable excess profit generated by the continuous capital increase by the agricultural capitalists resulted in an increase in the labor productivity, so that the superfluous profits, which are more than the average profits, should be converted into differential rent II. The interpretation of the passage is prone to some ambiguous or even ambiguous interpretations and needs to be further clarified.