安徽农业科学2011，Vol.39Issue(35)：21719-21721,21731,4.
土壤水分对异株荨麻光合作用的影响
Effect of Soil Moisture on Photosynthesis of Urtica dioica L.
摘要
Abstract
Under pot planting and water controlling condition, the diurnal variations of photosynthetic characteristics of Urtica dioica L. Were measured under 5 different soil water conditions using Li26400 portable photosynthesis system. The results showed that the diurnal course of net photosynthetic rate was displayed in a two peak pattern with a typical midday depression pattern under different drought stress. The maximum value of net photosynthetic rate appeared from 17:00 to 9:00 with the increase of soil moisture. Coordination existed Between daily change process of transpiration rate and dairy change process of stomatal conductance in Urtwa dioica L. And a two peak course was displayed. The order of T3 > T2 > T1 > T4 > T5 was founded in Tr and Gs. The water use efficiency culminated in the early morning. And the water use efficiency in forenoon was higher than that in afternoon.关键词
异株荨麻/土壤水分/光合作用/日变化Key words
Urtica dioica L. /Soil moisture/ Photosynthesis/ Daily variation分类
农业科技引用本文复制引用
何斌,刘勇..土壤水分对异株荨麻光合作用的影响[J].安徽农业科学,2011,39(35):21719-21721,21731,4.基金项目
国家科技部星火计划项目"生态建设与经济林果栽培技术与科技示范" （）
贵州省教育厅自然科学研究项目(黔教科2010075). （黔教科2010075）
