农业工程学报2011，Vol.27Issue(1)：94-98,5.DOI:10.3969/j.issn.1002-6819.2011.01.014
不同灌水下限对温室茼蒿生长和产量的影响
Effect of different irrigation thresholds on growth and yield of garland chrysanthemum (Chrysanthemum coronarium L.) in greenhouse
摘要
Abstract
An experiment was conducted to study the effect of different irrigation thresholds on yield and growth of garland chrysanthemum under simulated micro-spray irrigation in greenhouse.The experiment included six treatments,which controlled soil water potential (SWP) at 15cm depth with -10 kPa (T1),-15 kPa (T2), -20 kPa (T3), -25 kPa (T4),-30 kPa (T5) and -40 kPa (T6), respectively.The results showed that effect of different irrigation threshold on the crop yield was significant.Treatment T2 had the highest yield and compared with T1, T3, T4, T5 and T6, its yield increased by 0.5％, 18.7％, 62.6％, 73.4％, 71.7％, respectively.Irrigation amount ofT2 was 195 mm throughout the growth period, saving 56.4％ than that ofT1.The plant height and growth rate ofT2 had no difference from T1.When the irrigation threshold was lower than -25 kPa in SWP, garland chrysanthemum would be under severe water stress,negatively affecting seedling emergence and restraining its growth.The SWP of- 15 kPa was recommended as the best irrigation threshold for garland chrysanthemum, because of both high-yield and water-saving.关键词
温室/灌溉/试验/茼蒿/产量/灌水量/灌水下限Key words
greenhouses/ irrigation/ experiments/ garland chrysanthemum/ yield/ irrigation amount/ irrigation threshold分类
农业科技引用本文复制引用
杨文斌,郝仲勇,王凤新,苏利茂,要晋峰,麻军,胡佳林..不同灌水下限对温室茼蒿生长和产量的影响[J].农业工程学报,2011,27(1):94-98,5.基金项目
北京市科技新星计划项目(2007B049) （2007B049）
