喷施磷酸二氢钾对青花菜产量及品质的影响

在青花菜的10叶期开始喷施不同浓度的磷酸二氢钾进行试验。结果表明：喷施磷酸二氢钾，青花菜产量较对照明显增加，其中喷施浓渡为0．3％时花球直径最大(14．17cm)，产量最高(25835．13kg／hm^2)，增产率最高(50．13％)。经方差分析，0．3％的磷酸二氢钾处理与对照之间产量差异极显著。喷施不同浓度的磷酸二氢钾，青花菜品质也有不同程度的改善，其中喷施0．3％磷酸二氢钾时，青花菜花蕾中Vc、钙、镁、磷含量均高于对照。

Effects of foliage dressing KH2PO4 on curd yield and quality in broccoli

Foliage dressing different concentration of KH 2 PO 4 in the period of ten leaves in broccoli was carried out.The results showed that there was a marked increment both curd diameter and yield by foliage dressing KH 2 PO 4 treatments in contrast with control.When foliage dressing concentration of KH 2 PO 4 was0.3%,the curd diameter and yield were14.17cm and25835.13kg.hm 2 ,respectively,increment yield rate was50.13%at the highest level.Foliage dressing concentration0.3%has a significant difference in contrast with control by analysis of variance.Foliage dressing KH 2 PO 4 can also improve quality of broc-coli when foliage dressing concentration was0.3%,contents of Vc,Ca,Mg,P in broccoli were more than those of control.