Pedosphere 2(1): 85--92, 1992
ISSN 1002-0160/CN 32-1315/P
©1992 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Study on “Blind—Ear”——Copper Deficiency Symptom in Wheat on Subtropic Hill Soils |
| QINSUI－CHU WUZHENG |
[1]ZhejiangAgriculturalUniversity,Hangzhou310029(China)
[2]SoilandFertilizerStationofShengxianCounty,Zhejia |
| ABSTRACT |
| 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. |
| Key Words: |
| Citation: . 1992. Study on “Blind—Ear”——Copper Deficiency Symptom in Wheat on Subtropic Hill Soils. Pedosphere. 2(1): 85-92. |
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