生态学杂志2012，Vol.31Issue(10)：2493-2500,8.
甘肃景电灌区不同栽植年限枸杞生物量分配特征
Biomass allocation characteristics of different-aged Lycium barbarum in Jintai electrical irrigation area, Gansu Province of Northwest China
刘瑞 1靳虎甲 1马全林 1王耀琳 1李银科 1孙涛 1宋德伟 1朱国庆1
作者信息
- 1. 甘肃省荒漠化与风沙灾害防治重点实验室/省部共建国家重点实验室培育基地,甘肃省荒漠化防治重点实验室,甘肃省治沙研究所,兰州730070
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摘要
Abstract
Lycium barbarum L. is the top choice cash shrub planted on the saline soils in arid areas of China. To study the morphology and biomass allocation of L. barbarum could provide theoretical basis for enhancing the productivity of this shrub and supporting its sustainable use. In this paper, the L. barbarum plants of 4-, 7-, and 11-year old in the Jintai electrical irrigation area of Gansu were selected to study the biomass allocation in their branches, fruits, leaves, and different diameter sizes roots. Little variation was observed in the plant height and canopy diameter among the 4-year-old plants, greater variation was found among the 7-year-old plants (the vigorous growth stage) , and little variation was observed again among the 11-year-old plants. Vertically, the total biomass and branch biomass of the 4-, 7-, and 11-year old plants were the greatest at the 50-100 cm layer, the fruit- and leaf biomass of the 4-year old plants were the greatest at the 50-100 cm layer, whereas the fruit- and leaf biomass of 7-year-old plants were the greatest at the 100-150 cm layer. The biomass of the thick and thin roots of the 4- and 7-year-old plants occupied a greater proportion, while the biomass of the thick roots of the 11 -year-old plants occupied over 50% but the biomass of the thin roots only had a small proportion. The biomass allocation to the fruits, leaves, and medium- and coarse roots increased with plant age, whereas the biomass allocation to the fine roots was the greatest for the 7 -year-old plants, followed by the 11-year-old plants, and then the 4-year-old plants. A quadratic function was developed to describe the relationships between the leaf- and root biomass and the plant age.关键词
景泰/枸杞/根系/生物量/构件Key words
Jingtai/ Lycium barbarum/ root system/ biomass/ module.分类
农业科技引用本文复制引用
刘瑞,靳虎甲,马全林,王耀琳,李银科,孙涛,宋德伟,朱国庆..甘肃景电灌区不同栽植年限枸杞生物量分配特征[J].生态学杂志,2012,31(10):2493-2500,8.
