Abstract: Taking the new quality productivity and the development of agricultural and rural modernization as the research theme, the theoretical logic of the new quality productivity enabling agricultural and rural modernization development was expounded. Based on the relevant data of various provinces, the entropy method and the multivariate weighted comprehensive evaluation method were used to measure the national new quality productivity index and the national agricultural and rural modernization development index from 2010 to 2022, and then the internal influence mechanism and action mechanism of new quality productivity on the development of agricultural and rural modernization were empirically tested with the help of the threshold effect model. The results showed that new quality productivity could empower the endogenous driving force necessary for the development of agricultural and rural modernization. When the government management efficiency was taken as the threshold variable, there was a double threshold effect, but when the threshold was crossed, the promotion effect of the development of new quality productivity on the development of agricultural and rural modernization presented the basic characteristics of "diminishing marginal effect". When the level of marketization was taken as the threshold variable, there was a single threshold effect, and when it was in the low-intensity marketization, the new quality productivity inhibited the development of agricultural and rural modernization, but when the threshold was crossed, the promotion effect of the new quality productivity on the development of agricultural and rural modernization would show the basic characteristics of "increasing marginal effect", that was, with the improvement of the level of marketization, the positive effect of the new quality productivity would be enhanced.

Key words: new quality productivity, agricultural and rural modernization, marketization level, government management efficiency