扬州大学学报（农业与生命科学版）2025，Vol.46Issue(3)：21-27,112,8.DOI:10.16872/j.cnki.1671-4652.2025.03.003
不同氮磷施用水平对幼龄橡胶树叶片及土壤养分的影响
Effects of different nitrogen and phosphorus application levels on young rubber leaves and soil nutrients
摘要
Abstract
The experiment took the young Hevea brasiliensis of Yunyan 77-4 as the research object to analyze the im-pacts of different nitrogen and phosphorus application levels on the nutrients in the leaves and soil of Hevea brasiliensis,with the expectation of providing a basis for nutrient management and rational fertilization in rubber plantations.During the 3rd to 5th years after the Hevea brasiliensis was planted,nitrogen and phosphorus fertilization treatments with two factors and three levels were set up.In September of each year,soil and leaves were collected to measure their nutrients.On the basis of analyzing the changes in their contents,a regression model between the amount of fertilization and the nu-trient content in the leaves was established.The results showed that after three years of fertilization treatment,the con-tents of available nutrients in the soil were all higher than those of the control.There was a strong interaction between ni-trogen and phosphorus in the soil.The amount of nitrogen applied had a significant impact on the contents of alkali-hydro-lyzable nitrogen and available phosphorus in the soil.There was also a strong interaction between phosphorus and potassium,and the amount of phosphorus applied had a significant impact on the content of available potassium in the soil.Under the fertilization treatment,the contents of nitrogen,phosphorus,potassium,calcium and magnesium in the leaves were all significantly higher than those of the control,and the maximum increase rates were 23.83％,32.04％,25.05％,21.77％and 21.65％respectively.There were significant differences in nutrient contents among different treatments.The contents of nitrogen,phosphorus,calcium and magnesium in the leaves were relatively high under the medium nitro-gen treatment.The content of potassium in the leaves was relatively high under the high nitrogen treatment.The contents of nitrogen and phosphorus in the leaves were relatively high under the medium phosphorus treatment.And the contents of potassium,calcium and magnesium in the leaves were relatively high under the low phosphorus treatment.The applica-tion amounts of nitrogen and phosphorus had significant impacts on the nutrient contents in the soil of the rubber planta-tion and the leaves of Hevea brasiliensis.There were relatively strong interactions among different nutrients in the rubber plantation.The regression equations between the fertilization amount and the nutrient content in the leaves were as fol-lows:YN=-5.185-0.109XN-1.022XP-0.206XK+0.157XCa,and YP=-2.378+0.12XN-0.64XP.关键词
橡胶树/氮/磷/养分含量/施肥量Key words
rubber tree/nitrogen/phosphorus/nutrient content/rate of fertilization分类
农业科技引用本文复制引用
许木果,李思敏,刘忠妹,杨春霞,丁华平..不同氮磷施用水平对幼龄橡胶树叶片及土壤养分的影响[J].扬州大学学报（农业与生命科学版）,2025,46(3):21-27,112,8.基金项目
国家自然科学基金资助项目(31860199) （31860199）
云南省财政专项(RF2024) （RF2024）
云南省乡村振兴科技专项(202204BI090015) （202204BI090015）
云南省技术创新人才培养项目(202005AD160005) （202005AD160005）
