摘要
为探讨不同前茬作物对星油藤土壤肥力的影响,在云南省西双版纳普文镇开展了5种不同前茬作物(茶树-星油藤、水稻-星油藤、香蕉-星油藤、玉米-星油藤、空地-星油藤)对星油藤根际和非根际土壤pH值、土壤电导率、有机质、全氮、全磷、全钾及微量元素的影响研究(以空地-星油藤为对照)。结果表明:不同前茬作物对星油藤根际与非根际土壤pH、电导率与空地土壤pH、电导率均呈显著差异。微量元素全锰、全铁、全锌和全铜的含量低于世界和全国土壤平均水平,重金属元素全锌和全铜单项污染值小于1。以土壤中的有机质、全氮、全磷、全钾的含量综合评价不同前茬作物对星油藤的土壤肥力水平依次为:玉米-星油藤>茶树-星油藤>香蕉-星油藤>水稻-星油藤>空地-星油藤。综合考虑,以前茬作物为玉米和茶树的星油藤土壤肥力较好。
In order to reveal the effect of different cultivation patterns on soil nutrition of the Plukenetia volubilis L plantation, five cultivation patterns （Tea-P. volubilis, Rice-P. volubilis, Banana-P. volubilis, Maize-P. volubilis and the control group of P. volubilis） were selected in Puwen Town of Xishuangbanna, Yunnan Province, to analyze soil characterization, including pH, electrical conductivity （EC）, organic matter, total nitrogen, total phosphorus, total potassium and mineral elements in rhizosphere and bulk soil. The results showed that the pH, electrical conductivity and total dissolved solids in rhizosphere and bulk soil of four rotations were significantly different from the control group of P. volubilis. Total Mn, Fe, Zn and Cu concentrations in soil were under the world average level and the contents of heavy mental （Zn and Cu） were below 1. Soil fertility of different cultivation patterns was in this order, Maize-P. volubilis 〉 Tea-P. volubilis 〉 Banana-P. volubilis 〉 Rice-P. volubilis 〉 Free-P. volubilis, according to the comprehensive analysis of the contents of organic matter, total nitrogen, total phosphorus and total potassium. Above all, it was suggested that Maize-P. volubilis and Tea-P. volubilis patterns were better.
出处
《热带作物学报》
CSCD
北大核心
2014年第1期42-46,共5页
Chinese Journal of Tropical Crops
基金
国家自然科学基金(No.31170641)
中国科学院知识创新工程项目(No.KSCX2EWQ17
KSCX2EWZ15
XTBG-T02)
国家林业局西南风景园林工程技术研究中心
关键词
前茬作物
星油藤
根际土壤
非根际土壤
土壤肥力
Preceding crop
Plukenetia volubilis L.
Rhizosphere soil
Bulk soil
Soil fertility
