【摘 要】
：
大白菜是引黄灌区的一种主要秋菜,历年栽培面积较大,1963年仅银川市就种植1221亩,占蔬菜种植面积的十分之一。近两年来,在大白菜生产中,由于灌水、施肥、病虫防治、间苗等栽
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大白菜是引黄灌区的一种主要秋菜,历年栽培面积较大,1963年仅银川市就种植1221亩,占蔬菜种植面积的十分之一。近两年来,在大白菜生产中,由于灌水、施肥、病虫防治、间苗等栽培技术未能很好贯彻,致使白菜生产受到一定影响。加以品种混
Chinese cabbage is one of the main autumn vegetables in the Yellow River Diversion Project. The cultivated area has been large over the years. In 1963, only 1221 mu of land was planted in Yinchuan City, accounting for one tenth of the vegetable cultivation area. In the past two years, in the production of Chinese cabbage, cultivation techniques such as irrigation, fertilization, pest and disease control, rice seedling and so on have not been well implemented and the production of cabbage is affected to a certain extent. To mix variety
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