Abstract:

In this paper, the 4-year-old peach tree (Amygdalus persica ‘Jingchun’) in the orchard on brown-red soil of south Hubei Province was used as experimental materials. The foliar nutrient and chlorophyll contents of peach tree were studied, in which the different rates of lime (Ca(OH)2) incorporated into the soil. Then path analysis was used to investigate the relationships between foliar nutrients and chlorophyll under the condition of liming. The results were as follows: The incorporated lime treatment can improve the content of foliar total Ca and reduce the contents of foliar total P and Zn during the initial stage. During the growing seasons of leaves, the content of total Mn was significantly reduced in the incorporated lime treatment, but there was no change for total Mg, Cu content. The contents of foliar total K, Fe were increased in low lime consumption treatment and decreased in high lime consumption treatment. In April and August, the content of leaves chlorophyll was increased in the incorporated lime treatment, but with low peak in June (the middle growth stage of leaves). Path analysis indicated that it was beneficial to improve the content of leaves chlorophyll under the condition of liming based on controlled the content of foliar P, while improved the contents of foliar Zn and N. Therefore, it was very essential to combine with Zn fertilizer under the condition of liming in the peach orchard with brown-red soil.