镁肥对台湾青枣叶片叶绿素含量和果实品质的影响

在大田条件下进行试验,研究镁肥不同施用量(0、150、300和450 g/株)对台湾青枣叶片叶绿素含量和果实品质的影响。结果表明,与不施肥对照比较,除盛花期施硫酸镁150 g/株的处理叶片叶绿素含量差异不显著外,其余各个处理在不同生育时期叶片叶绿素含量均显著提高;增施镁肥还能显著提高台湾青枣果实中水溶性钾和可溶性固形物含量,其中,施硫酸镁300 g/株的处理,果实中水溶性钾和可溶性固形物含量最高。

Effects of Magnesium Fertilizer on Chlorophyll Content of Leaves and Fruit Quality of Ber (Zizyphus mauritiana Lam.)

The methods of filed experiment were adopted to study the effects of magnesium fertilizer application of different amounts （0, 150 g, 300 g and 450 g/plant） on chlorophyll content of leaves and fruit quality of the Ber （Zizyphus mauritiana Lam.）. The results showed that except the treatment of magnesium sulfate application （150 g/plant） at blooming stage in which the difference of chlorophyll content of leaves was not significant compared with the control, the other treatments at different growth periods significantly increased the chlorophyll content of /eaves. Magnesium fertilizer application also significantly increased water-soluble potassium and soluble solids content of fruits of Zizyphus mauritiana, the content of water-soluble potassium and soluble solids of the fi＇uit was the highest in the treatment of 300 g/plant magnesium sulfate application.