热带作物学报2017，Vol.38Issue(11)：2014-2020,7.DOI:10.3969/j.issn.1000-2561.2017.11.004
胡椒与槟榔间作对群体养分吸收利用的影响
Effects of Black Pepper/Arecanut Intercropping System on Groups of Nutrient Uptake and Utilization
摘要
Abstract
In this study,pepper and arecanut seedlings are adopted as experimental materials.Compare pepper and arecanut root morphology,nutrient concentration and content,nutrient uptake and utilization efficiency,shoot and root biomass in the intercropping system with monoculture condition.In order to make clear whether the root interactions promote pepper and arecanut nutrient uptake and biomass increase.The results showed that the pepper/arecanut system significantly improved pepper root effective form,shoot nutrient content,phosphorus utilization efficiency and shoot biomass.Analyze the correlation between root morphology and the efficiency of nutrient uptake and utilization.There was significant or very significant correlations between root morphology parameters that root length per volume,specific root length and specific root surface with P utilization efficiency,and specific root length contributed 94％ to phosphorus utilization efficiency.Pepper/arecanut system significantly improved the three root morphology parameters and biomass of pepper,so pepper/arecanut system improved biomass of pepper via changing pepper root morphology,and then increasing nutrients absorption and utilization efficiency.The pepper/arecanut system increased N and P content of root,and also increased N and P utilization efficiency.Pepper/arecanut system increased N and P utilization efficiency of arecanut that was beneficial to improve the ability of arecanut resistance to diseases and pests,also can improve the state of yellow leaf disease of arecanut and prevent it.It showed that pepper/arecanut system promoted the nutrient uptake and utilization efficiency and also pepper biomass through changing the root morphology of pepper and arecanut.关键词
间作/胡椒/槟榔/养分/根形态Key words
Intercropping/black pepper/arecanut/nutrient/root morphology分类
农业科技引用本文复制引用
祖超,李志刚,王灿,鱼欢,邬华松,杨建峰..胡椒与槟榔间作对群体养分吸收利用的影响[J].热带作物学报,2017,38(11):2014-2020,7.基金项目
海南省自然科学基金项目(No.20163134) （No.20163134）
中国热带农业科学院2017年基本科研业务费专项(No.1630142017009). （No.1630142017009）
