A dataset of crop harvest traits and yield at long-term observation farmlands in Lhasa River valley from 2016 to 2020

This dataset consists of 5 parts, the multiple cropping index and crop rotation system, fertilizer input of farmland crops, farmland irrigation, crop harvest traits and crop yield data, observed by Lhasa National Field Scientific Observation and Research Station of Agro-ecosystem from 2016 to 2020, the observed crops include highland barley, wheat, and rapeseed.