The effect of foliarspraving of cu on the wheat growing in Cu deficit soil Treat ears/m2 seeds/ear seed weight(g/m2) No Cu 37.0 0.14 0.03 Soil dress Cuso(kg/ha) 2.5 28.8 2.3 1.0 10.0 58.5 2.3 Foliarspraying Cul2%0, 2 CusO4(kg/ha) elongation stage 63.8 17.1 14.0 elongation stage and heading stage 127.4 52.0 79.3The effect of foliar spraying of Cu on the wheat growing in Cu deficit soil Treat ears/m2 seeds/ear seed weight（g/m2） No Cu Soil dress CuSO4 (kg/ha) 2.5 10.0 Foliar spraying Cu12%,2CuSO4 (kg/ha) elongation stage elongation stage and heading stage 37.0 0.14 0.03 28.8 2.3 1.0 58.5 2.9 2.3 63.8 17.1 14.0 127.4 52.0 79.3