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了解不同氮素供应水平对萝卜干物质累积特征及源库活性的影响,为萝卜生产的最佳氮肥管理提供理论依据。采用田间小区试验方法,以冀西北高寒半干旱区的萝卜主产区张家口市尚义县为研究区域,以当地主栽萝卜品种春雷为供试材料,每公顷设置0、84、126、168、252、336千克共6个施氮水平,分析不同施氮水平下萝卜干物质累积特征和源库活性的差异。在当地土
To understand the effects of different nitrogen supply levels on the accumulation of dry matter and the activity of source sinks of radish, and to provide a theoretical basis for the optimal nitrogen management of radish production. Using field plot test method, taking Shangyi County, Zhangjiakou City as the main radish producing area in the semi-arid and cold region of northwestern Hebei as the study area, spring radishes as the main radish cultivar in the region were set as 0, 84, 126 and 168 for each hectare, 252,336 kg total nitrogen application rates. The differences of dry matter accumulation and source sink activity of radish under different nitrogen levels were analyzed. In the local soil