I was born there in the mid-70's but left the country at an early age due to the civil war at the time.
Unfortunately it is still ravaged because of Khmer Rouge.
Many of the buildings, temples, and other landmarks were damaged or fell into neglect during the 1970's wars and are still being restored or waiting for restoration. I don't know about the current arable land situation, but until recently, military operations continued sporadically in some of the rural areas.