Abstract:Studies based on the cauliflower variety of‘Xiahue 100 Days’ indicated that, when 2.25 kg·hm- 2 (NH4)2MoO4 ·2H2O was used as base fertilizer or 0.1% (NH4)2MoO4 ·2H2O sprayed as foliage fertilizer, both the chlorophyll content and nitrate reductase activity of leaves could be increased, meanwhile improve the quality of the cauliflower. 15100 kg·hm- 2 B used as base fertilizer or 0.1% - 0.2% Belement used as foliage fertilizer also could increase the yield and improve the quality of the cauliflower. However, high concentration (0.4%) of B would make both the yield and the quality of cauliflower reduced.