摘要
以黑枸杞叶水势与气象因子之间的关系为基础,进一步研究叶水势和土壤含水率对黑枸杞形态指标的影响,目的是确定黑枸杞的最长灌水周期。黑枸杞不同灌水期的气象因子(气温、相对湿度、风速、大气压、太阳辐射、紫外线辐射)、土壤温度及叶面温度与叶水势之间的关系进行了分析。结果表明:黑枸杞叶水势与气象因子之间存在密切的关系,因此,以黑枸杞形态指标、叶水势与土壤含水率的变化过程作为依据确定了最长的灌水周期。根据土壤含水率的变化过程与黑枸杞形态指标的影响可知:当地黑枸杞的最长灌水周期不能超过22d。为确定黑枸杞灌水次数及灌水周期提供依据。
Based on the relationship between the leaf water potential of black Chinese wolfberry and the meteorological factors,the influences of leaf water potential and soil moisture content on the morphological indexes of black Chinese wolfberry is further studied to determine the longest irrigation cycle.The relationships among the meteorological factors（temperature,relative humidity,wind speed,atmospheric pressure,solar radiation,and Ultraviolet radiation）,soil temperature,the leaf temperature,and the leaf water potential of Black Chinese wolfberry at different irrigation stage are analyzed.The results show that there is a close relationship between the leaf water potential and meteorological factors.Therefore,the longest water cycle can be determined on the basis of the shape index,leaf water potential and soil moisture content change process.According to the change process of soil moisture content and the morphological indexes of black Chinese wolfberry,it can be found that the longest irrigation cycle of local black Chinese wolfberry can not be more than 22 days.The research result can provide a basis for the determination of the irrigation times and cycle of the black Chinese wolfberry.
出处
《节水灌溉》
北大核心
2015年第10期43-45,共3页
Water Saving Irrigation
基金
国家自然科学基金项目(41361061)
大学生创新项目(201410758021)
关键词
气象因子
黑枸杞
叶水势
土壤含水率
灌水周期
meteorological factor
black Chinese wolfberry
leaf water potential
soil moisture
irrigation period
