大量供水可能对灌溉水稻淹水土壤有很大好处。
An ample water supply is probably the greatest advantage of soil submergence for irrigated rice.
而对南京的产量有负面影响，其影响规律和对灌溉水稻的相似。
The effect of climate variability on rainfed rice yield in Nanjing is similar to that of the irrigated rice yield.
我们开展的研究发现，地方灌溉水稻生产的竞争力与亚洲相同，生产成本比美国要低得多。
Our studies have found that local rice production under irrigated conditions can be as competitive as in Asia and much cheaper than in the USA.
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