In order to make the most of the growing season, many farmers have started planting rice earlier and drying out the fields before the rice is fully mature. Some even stop watering the rice too soon after it has filled up. However, this practice can significantly affect the later development of the crop and often leads to lower yields. During the critical reproductive stages—such as booting and flowering—rice requires a lot of water and is highly sensitive to both water and nutrient availability. If the field lacks sufficient moisture, it can result in delayed heading, poor pollination, early plant senescence, increased empty grains, and reduced grain weight, all of which contribute to lower productivity. Cutting off water too early in the later growth phase can also reduce root activity and impair grain filling, especially for high-yielding varieties that require a longer filling period. In saline-alkaline rice areas, early water shortage may even cause a phenomenon known as “back stalk,” where salt returns to the surface due to lack of water, further damaging the crop and causing significant yield losses. Therefore, it's not recommended to cut off irrigation too soon. The proper water management strategy involves maintaining deeper water levels during the booting stage, ensuring adequate water during heading and flowering, using shallow water during grain filling, keeping the soil moist during ripening, and generally stopping irrigation 3 to 7 days before harvest. This approach helps ensure healthy plant development and maximizes yield potential.

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