This paper mainly introduced crop s response to drought, re-watering, and the current development of aqua-protein and signal conduction in water transportation. It also analyzed the relation between root absorption, transportation. and compensatory effect. As a result, the effect of drought on plant had its own critical period, and re-watering after drought had efficient compensatory stage. It would gain best irrigating effect if water was supplied in critical stage. So by reducing the frequency and amount ...
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