中国农业科学2011，Vol.44Issue(6)：1191-1200,10.DOI:10.3864/j.issn.0578-1752.2011.06.014
一品红生物量及对水分、养分吸收利用的变化规律
Study on the Biomass and Regularity of Absorption and Utilization of Water and Nutrition in Euphorbia pulcherrima
摘要
Abstract
[Objective] The aim of this study was to reduce the production cost and improve the utilization rate of water and fertilizer, and to realize the precise control of potted flowers. [Method] The law of absorption and utilization of water and nutrition in different developmental stages of poinsettia was studied by equation regression. [Result] It was found that the change curves of water and nutrition uptake as well as the change curves of biomass accumulation in poinsettia showed S pattern. The determination coefficient of the models established by logistic regression equation y=1/(a+be-x) was higher than 0.99. The rate of biomass accumulation, as well as water production and nutrition absorption in poinsettia was right deviation bell-shaped.[Conclusion] The suitable watering frequency and fertilizer amount matching specified medium in different developmental stages of poinsettia were simulated. Watering when the medium water content was 65.09％ during 31-53 days, 66.83％ during 54-93 days,and 64.34％ after 93th day, the water amount was 500.00 mL per pot. The fertilizer amount was 794.68-808.59 mg per pot during 31-58 days, 827.15-833.33 mg per pot during 59-107 days, 831.01-833.33 mg per pot after 107 days, once a week. These conclusions provided a technical support for low cost, high quality and efficient production of potted poinsettia with precise control of water and nutrition.关键词
一品红/水分/养分/吸收利用/精准控制Key words
Euphorbia pulcherrima/ water/ nutrition/ absorption and utilization/ precise control引用本文复制引用
孙向丽,张启翔..一品红生物量及对水分、养分吸收利用的变化规律[J].中国农业科学,2011,44(6):1191-1200,10.基金项目
苏州大学青年教师自然科学基金项目(Q3138925)、国家林业局"948"引进创新项目(2005-4-C01)、科技部农业科技成果转化项目(04EFN217100389) （Q3138925）
