摘要
The “blind-ear” as a Cu deficiency symptom in wheat on upland soils in the hilly area of Zhejiang Province was discussed in this paper.Through 3 years of field experiments,it was elucidated that “blind-ear” in wheat plant appeared due to the low level of available Cu in the soils,and the critical value 3 mg/kg for total Cu in the plant at grain filling stage and 1 mg/kg for available Cu(0.1 M HCl)in the soils.A basal dressing of 30 kg/ha of Cu sulfate to the soils could completely eliminate Cu deficiency symptoms,obtain normal grain yield and have residual effect for at least 3 years.
The 'blind-ear' as a Cu deficiency symptom in wheat on upland soils in the hilly area of Zhejiang Province was discussed in this paper. Through 3 years of field experiments, it was elucidated that 'blind-ear' in wheat plant appeared due to the low level of available Cu in the soils, and the critical value 3 mg / kg for total Cu in the plant at grain filling stage and 1 mg/ kg for available Cu (0.1 M HCl) in the soils. A basal dressing of 30 kg / ha of Cu sulfate to the soils could completely eliminate Cu deficiency symptoms, obtain normal grain yield and have residual effect for at least 3 years.
