【摘要】 研究了不同施肥水平对出口青花菜产量与主要品质指标的影响。结果表明,有机无机复混肥、精制有机肥和腐殖酸复混肥均能提高青花菜的产量和品质,效果以有机无机复混肥最显著,其次为精制有机肥和腐殖酸复混肥,单施氮肥对产量和品质无显著影响。有机无机复混肥、精制有机肥显著提高了花球产量、花球叶绿素含量、可溶性糖含量、Vc含量及PAL活性,降低了花球SOD活性。施加氮肥水平与花球中Vc含量呈负相关,与SOD活性、叶绿素含量呈正相关,氮与硼配施有明显的互作效应。更多还原

【Abstract】 Effect of different fertilizer level on head yield and quality in exporting broccoli was studied.The results showed that organic fertilizer significantly increased broccoli yield as well as quality compared to the chemical fertilizer.The greatest yield was obtained under the treatment of organic-chemical compound fertilizer,values of these yields followed by the treatment of refined organic fertilizer and humic-chemical mixed fertilizer.The obvious evidence was observed that applied only chemical nitrogen fertilizer had no influence on the yield and quality,even worse than ck.Organic-chemical compound fertilizer and refined organic fertilizer improved head yield,chlorophyll content,soluble sugars content,Vc content and PAL activity,and decreased SOD activity.There were negative relationships between N fertilizer and Vc content;SOD activity,chlorophyll content and N fertilizer are positively correlated.There were obviously additive effects between N and B fertilizer.更多还原