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Reasons for Reddening Rice Leaves and Treatment Methods

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Rice leaves turn red because of the high-temperature weather during this growth stage. At this time, water promptly, using an alternating wet-and-dry method, a small amount each time, and irrigate again when there is no standing water in the field; also topdress promptly, and spray an appropriate amount of potassium dihydrogen carbonate solution on the leaves, which can increase photosynthesis and alleviate the symptoms.

I. Causes

Rice leaves turn red because of the high-temperature weather during this growth stage. Under high temperatures, its leaves transpire strongly and are very prone to physiological water shortage. In addition, watering is generally done during high temperatures, and strong irrigation at this time causes the root system to sit in accumulated water and become oxygen-deprived and black, thereby losing vitality and causing the leaves to show reddening symptoms.

II. Prevention and Control Methods

1. Watering: When watering, alternate wet and dry; do not apply too much at one time. Water a small amount each time, and irrigate again when there is no standing water in the field. Repeat this cycle, and be sure not to let a large amount of water accumulate.

2. Fertilizing: When reddening of the leaves is found, fertilize promptly. When fertilizing, choose fertilizers containing potassium, and you may also spray an appropriate amount of potassium dihydrogen carbonate solution on the leaves; only in this way can the symptoms be alleviated and photosynthesis improved.

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