Answer:
Moscow was the capital of USSR and was more of an urban area. The political elite of the USSR lived there and their concerns were different from what the envisioned for the rest of the Soviet Union.
Step-by-step explanation:
Farming in USSR was mostly done through collective farming. In fact, the Soviet government did not want private cultivation of land and instead encouraged and even forced people for collective farming.
The Soviet Union bevelled that most peasant farmers were 'reluctant' revolutionaries and if left on their own, might want to counter the soviet government.
Collective farming was a way to not just control food supplies but also subject peasants under a disciplined system of government control.