Zinc is deficient in the soil, and rice will appear in different degrees. The zinc seedlings caused by zinc deficiency mostly appear within 2-3 weeks after transplanting. The initial expression of the chlorosis at the base of the heart was white, irregular brown spots appeared on both sides of the middle and lower lobes, and gradually expanded into red-brown streaks. In severe cases, brown spots spread to leaf sheaths and stems. The occurrence of lesions on plants generally occurs sequentially from the lower lobe to the upper lobe. Zinc-deficient rice plants have slow leaf emergence, short and narrow leaves, and old, lower leaves that are brittle, underneath, easily broken, and have aging roots and few new roots. Severely ill plant leaves have shortened or dislocation of the occipital distance, obvious dwarf clumping, few tillers, and uneven field growth. For paddy fields with obvious zinc deficiency or zinc deficiency tendency, supplementing zinc fertilizer can reduce the rate of freezing seedlings. The basic application of zinc fertilizer, root and leaf spray can be. Before transplanting rice, 1-2 kg of zinc sulfate was applied per acre of Datian. Before transplanting, roots were sowed with 1% zinc oxide suspension. The spraying concentration was 3-5 days before transplanting and 5-7 days after transplanting. 0.1-0.2% zinc sulfate solution once. Medical Gauze,Cotton Bandage Roll,Absorbent Gauze Roll,Medical Gauze Rolls Surgimed Medical Supplies Co.,Ltd , https://www.surgimedcn.com