Farm soil quality appraise is the prerequisite to realize the system of rewards and punisher - ents for using farm.

Through blank experiment of terraces. it shows that the soil fertility of newly built terraces is distributed in a crumby shape which is remarkably different than that of the ordinary farm soil.

With their enormous size and weight, today's farm machines have significant downsides: they compact the soil, reducing porosity and killing beneficial life, meaning crops don't grow so well.