This paper aims to discuss the production potential(PP) and yield increment potential(YIP) of paddy rice which makes up 88 percent of total food production in Guangdng.The paper is divided into two parts.The first part deals with PP.It points out that PP of late rice is greater than that of early rice and PP in southern plain area is greater than that in northern mountain area .In the second part

at the beginning

it reviews the yield of paddy rice per unit area and shows that the output is ever icereasing

but the increment of early rice is a little greater than that of late rice.Then

it discusses the utilization efficiency (UE) of paddy rice.It indicates UE of early rice is higher than that of late one and UE in the north is higher than that in the south.Finally

it deals with YIP.It is obvious that there is much room for YIP of paddy rice.To achieve greater YIP

the production of late rice and southern plain coastal area

where most of the fertile arable farmland lies

should be focused on.