Soil Improvement of Magnesium Deficiency for Wentan Pomelo

The main purpose of this experiment is to enhance the efficiency of Magnesium containing lime and the availability of Magnesium application in cooperating with a driller designed for deep fertilization. The experiment was conducted at Jui-Sui, Hualien. The soil studied is strong acid loam. In 1991, after the harvest, six treatments, i.e.,(1)control,(2)laying lime on the ground,(3)lime applied in the furrows,(4)deep fertilizer application by a driller,(5)furrow liming and amended with the bark compost, (6) deep fertilizer application with the bark compost. Between August and September of 1992 and 1993, soil properties, Mg contents in leaves and fruit quality of wentan pomelo were analyzed. Meanwhile, the production of wentan pomelo was also recorded. Result showed that, the operation of a driller designed for deep fertilizer application has been significatly promoted the strong acid soil to be neutralized to attain a desired soil pH, and also the contents of Mg and Ca in leaves at the depth of 0-60 cm. Besides, the fruit productions were also promoted to the highest among the treatments. However, the contents of Mg in leaves and the fruit quality were not significantly different.

並列關鍵字

Wentan pomelo ； Magnesium deficiency ； Soil improvement

國際替代計量

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