根系输液改善妃子笑荔枝钙营养的研究

Studies on the calcium nutrition of Litchi chinensis"Feizixiao"improved by root injecting

在妃子笑果实膨大期,用CaCl2进行根系输液、果实蘸果及树冠喷施三种不同的补钙处理,研究不同补钙方式对改善妃子笑荔枝钙营养的作用。结果表明,用CaCl2根系输液,能够显著改善树体钙素营养,果皮和叶片的钙含量比对照分别提高了85.19%和50.28%,效果显著好于树冠喷施和果实浸蘸。与对照相比,果实浸蘸、树冠喷施也有显著改善钙营养的作用,果皮和叶片的钙含量比对照分别提高了33.48%、8.85%和28.43%、51.54%。综合比较三种补钙方式的效果,根系输液好于蘸果,蘸果处理好于树冠喷施。

The effects on improving the calcium nutrition of Litchi chinensis by three different types of calcium supplement （root injecting, fruit dipping and foliar spraying） during fruit development were studied. The results showed that the calcium nutrition of the trees could be significantly improved by root injection,and the calcium content of the pericarp and the leaves increased by 85.19% and 50.28% comparing with the control,respectively,which were better than the other two types. Compared with the control,treatments of foliar spraying and fruit dipping also contributed to higher content of calcium in the pericarp and the leaves,with 33.48%,8.85% and 28.43%,51.54% higher than those of control,respectively. Among the three types of calcium supplement,root injecting had the best effect on increasing the calcium content in L.chinensis,followed by fruit dipping and finally foliar spraying.