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THE SOIL PROPERTIES AND ROOT DISTRIBUTION IN AGROFORESTRY INTERCROPED ARECA AND VANILLA
Author(s): 
Pages: 84-87,83
Year: Issue:  z1
Journal: GUIZHOU SCIENCE

Keyword:  香草兰槟榔农林复合系统根系;
Abstract: 采用挖掘法和土壤常规观测方法对香草兰槟榔农林复合系统土壤物理性状及根系分布进行了分析.结果表明:与当地土壤相比,混交林表土层比较疏松,0~20cm土壤容重比当地同层土壤小0.13 g·cm-3.混交林下各土层土壤含水量分布具有规律性,0~80cm土层平均为12.8%.混交林土壤平均pH值为4.7,略小于当地土壤pH值.混交林平均土壤有机质含量为1.9%,处于全省较高水平,尤其0~20cm土层中有机质含量为1.96%,同比当地土壤高0.7%.香草兰槟榔复合系统根系多集中在0~40cm土层中,占总根量的82.3%,其中,槟榔根系多集中在20~40cm土层中,占总根量的51.6%,香草兰根系水平分布在0~30cm的表土层中,水平分布范围30~50cm.<1mm和1~3mm根系主要集中在20~40cm土层中,占总根量的48%,而槟榔纯林中<1mm和1~3mm根系主要集中在0~20cm土层中,占总根量的37.9%.
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