1. ReasonsThe redness of rice leaves is caused by the high temperature weather during this growth stage. In high temperature weather, the transpiration of its leaves is more intense, making it very prone to physiological water shortage. In addition, watering is usually carried out when the temperature is high. Strong watering at this time will cause the roots to be in a state of waterlogging and become black due to lack of oxygen, and then lose vitality, causing the leaves to turn red. 2. Prevention and control methods1. Watering: When watering, the field should be watered alternately between dry and wet. Do not water too much at one time. Water in small amounts each time. Wait until there is no visible water in the field before watering. Repeat this cycle. Remember not to allow a large amount of water to accumulate. 2. Fertilization: When you find the leaves turning red, apply fertilizer in time. Choose some potassium-containing fertilizers. You can also spray an appropriate amount of potassium dihydrogen carbonate solution on the leaves. This can alleviate the symptoms and improve photosynthesis. |
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