Rice nitrogen deficiency, phosphorus deficiency, potassium deficiency have any symptoms

Rice lacks nitrogen, yellowish leaves, short plants, and slow growth, making it difficult to deliver. The leaf color of the lower leaf is lighter than the leaf color of the upper leaf, and gradually it gradually dies from yellow. Stable and early but not neat, short grain and short grain, too early premature failure, the yield is very low. Rice lacks phosphorus, the old leaves are gray-purple, the new leaves are dark green, the leaves are narrow and erect, the leaf sheaths are long, the leaves are short, and the growth ratio is imbalanced. In severe cases, the leaves are slightly curled along the leaf veins. The rice plants look like "one column of incense," and the roots are thin and soft, with few branched roots and poor elasticity. For potassium deficiency in rice, auburn spots first appear on the tip of the leaves, and gradually spread from the old leaves to the new leaves and tip to the leaf base, forming auburn spots or bars. Some plants have similar symptoms on the leaf sheath, making the entire leaf or whole plant brown, and only a few leaves remain green. For nitrogen-deficient seedlings, nitrogen, phosphate fertilizer or nitrogen and potassium fertilizers can be used to mix acupuncture points or plug holes; for potassium seedlings, nitrogen and potassium fertilizers can be used to mix acupuncture points or plug holes; for phosphorus-deficient seedlings, nitrogen and phosphorous fertilizers can be used to mix acupoints or plugs. hole. China Agricultural Network Editor

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