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一、青贮大麦的生产现状北京郊区的奶牛业,五十年代起步,六十年代扩大,七十年代巩固,八十年代发展,一九六五年,北京市有奶牛19,100头,年总产牛奶不足一亿斤,但到一九八四年底,北京市已拥有奶牛38,854头(其中成母牛21,125头),年总产牛奶21.2142万斤,近二十年内,奶牛头数增加了一倍,而牛奶总产增长一倍多。
First, the production status of silage barley Dairy industry in the suburbs of Beijing started in the 1950s, expanded in the 1960s, strengthened in the 1970s, and developed in the 1980s. In 1965, there were 19,100 dairy cows in Beijing and total annual milk production However, by the end of 1984, 38,854 cows (including 21,125 cows) had been produced in Beijing and the total annual output of milk was 21.2142 million kg. In the last 20 years, the number of cows in the country has doubled, The total milk output more than doubled.