Study on Scale Regulation Mechanism and Path of Agricultural Digital Carbon Emission Reduction-Based on Jiangsu Evidence

In order to alleviate the constraints of global warming and sustainable development, digitalization has become an inevitable trend to promote agricultural carbon emission reduction. Under this situation, China insists on promoting moderate scale operation of agriculture. However, could -moderate scale operation promote -digital emission reduction in agriculture? Based on the data of three follow-up surveys from 2022 to 2024 to quantify the level of moderate scale operation in Jiangsu China, We verified that the boosting effect of carbon-constrained moderate scale management (MSM) in agricultural digital emission reduction, and the intermediary and regulation mechanism of agricultural internal and external scale management. We found that: (1) Calculated DEA model ,the scale of agricultural land in Jiangsu showed an "inverted S" trend with MSM and an "inverted W" trend with the overall agricultural carbon emission efficiency (ACEE), and the highest agricultural carbon emission efficiency is 0.855 in the moderate scale range of 20-36.667 hm2; (2)Tobit model showed that digital technology (DTE) has a significant inhibitory effect on ACEE(p< 10%), and the boosting effect of moderate scale management with carbon constraints is studied from the whole and the part respectively. On the whole, DTE has a better inhibitory effect on ACEE, while data resources (DRE), DTE and network platform (NTE) all significantly inhibit ACEE locally-that was DTE > DRE > NTE. (3) In digital carbon emission,the negative mediating effect about Employment of labor (EOL) in internal scale operation is as follows: DTE>NTE>DRE, and the negative mediating effect of agricultural mechanization (AML) is as follows: DRE > DTE > NTE; (4) In the external scale operation, organized operation (OML) significantly positively regulates the inhibitory effect of DRE on ACEE, while social service (SSS) significantly positively regulates the inhibitory effect of DTE on ACEE. Finally ,we provided suggestions and measures for the digital, large-scale and low-carbon development of agriculture in China and even in the world.