Some suggestions on the further research on deepwater rice are given .
并就深水稻的进一步研究进行了展望。
Irrigated rice , rainfed rice , upland rice and deepwater rice occupied 54 % , 31 % , 11 % and 4 % of total rice area in the world respectively .
全球稻田中，灌溉稻田、雨灌稻田、旱稻田和深水稻田分别占54%，31%，11%和4%。
deepwater rice