New sea 21 can save water, can use limited irrigation water, so it has advantage of power in arid and semi-arid region.
新海21是节水型品种，能够较充分的利用有限的灌溉水，在干旱半干旱地区具有强大的优势。
Also, the results from research on the limited irrigation water in different and developing stages indicated that the best period of limited water supply should be the jointing stage.
对不同生育期有限灌水的研究结果表明，拔节期是春小麦有限供水的最佳时期。
To some extend, the commonality benefit is harmed if infringing the surface-water irrigation rights without compensation for limited water resources, so this is external diseconomy action.
违规取用地表水灌溉，在水资源有限的情况下，从一定程度上损害了公共利益，并对他人不能进行补偿，因而是一种外部不经济的行为。
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