Wheat nitrogen deficiency and potassium deficiency timely remediation
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In the absence of nitrogen in wheat with nitrogen deficiency, the plant grows poorly, the seedlings are weak and erect, the tillers are few, the leaves are narrow and short, the base leaves start from the tip of the leaves, gradually turn yellow and dry, and gradually develop upward.
Remedial measures: nitrogen deficiency at seedling stage, 7~8 kg of urea per acre, or 20~25 kg of ammonium bicarbonate, or 600-700 kg of human excrement, applied in inter-row ditch or water; 2% urea in later stage Solution foliar application.
In the absence of potassium in potassium-deficient wheat, the plant grows slowly, the roots are poorly developed, perishable, the stems are short, the leaves are dark green or blue-green, and the leaves are dark and draped, the tips and edges of the leaves are yellow, then the browns are brown, but the veins are still It is green. When it is serious, the whole leaves are dead, the plants are wilting, easy to fall, premature aging, the ear is small and light, and the quality is worse.
Remedial measures: potassium deficiency at seedling stage, using 15 kg of potassium sulphate per acre, or 100 kg of ash, and trenching between rows; late use of 1%-2% potassium sulphate solution or 0.2%-0.3% potassium dihydrogen phosphate solution Or 5%~10% of the ash leaching solution of the leaves.