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当前,我省棉区棉花品种混杂退化现象比较严重。据公安县1979年调查,鄂光棉大田纯度平均为72.7％,鄂棉6号大田纯度
At present, cotton varieties in our province cotton mixed degradation is more serious. According to a survey conducted by Public Security County in 1979, the purity of the E-Guang cotton field was 72.7% on average, and the purity of the Emeian 6 field