1. The demand for water is large. Each formation of 1 g of dry matter requires 600-1000 grams of water, which is about 1 times that of other cereal crops.
2. The water demand in each growth period is not balanced. The seedling period is less, accounting for about 20% of the total. Flowering and pods were the most abundant, accounting for more than 50% of the total. Slightly less grain, about 25% of the total.
3. It varies depending on the type of product. The early maturing varieties are more sensitive to water reactions, and the water conditions are good, and the yield increase is significant, while the drought-responsive performance is more. The mid- and late-maturing varieties are not as good as the early-maturing varieties.
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