How much land should be used for agricultural facilities?

According to the Notice of the Ministry of Land and Resources and the Ministry of Agriculture on Further Supporting the Healthy Development of Facility Agriculture (document 20 14 127), the scale of land for ancillary facilities shall be controlled within 5% of the project land scale in principle, but not more than 10 mu at most; In principle, the scale of supporting facilities for large-scale livestock and poultry breeding shall be controlled within 7% of the land scale of the project (among them, the scale of supporting facilities for large-scale cattle raising and sheep raising shall be controlled within 10%), but it shall not exceed 15 mu at most; In principle, the scale of land for aquaculture ancillary facilities shall be controlled within 7% of the project land scale, but not more than 10 mu at most.