摘要
通过盆栽试验,研究了膜下滴灌、无膜滴灌和漫灌条件下温室青椒耗水规律。结果表明,不同条件下青椒生育期总耗水量、生育阶段耗水量及生育期内蒸腾蒸发比有明显差异。三种条件下生育期内日平均耗水量分别为1.78mm,2.64mm,3.09mm,总耗水量分别为162mm,240mm,281mm。无膜滴灌和漫灌条件下蒸腾量与蒸发量之比分别为1.53∶1,0.92∶1。通过对温室青椒耗水量与水面蒸发量进行回归分析,得出不同条件下以水面蒸发量为参数的青椒耗水模型,其中无膜滴灌情况下相关性最好,相关系数为0.834。
A pot experiment was conducted to study the water-consuming patterns of greenhouse pepper in dripping irrigation underneath mulching film, drip irrigation without mulching film and flood irrigation. The results indicated that the total water consumption and evapo-transpiration during pepper growth and the water consumption during different periods of pepper growth differed among different irrigating modes; in the order previously mentioned, the average daily water consumptions during pepper growth in the three irrigating modes were 1.78 mm, 2.64 mm and 3.09 mm, and the total water consumptions during pepper growth in the three irrigating modes were 162 mm, 240 mm and 281 mm. the ratios of evapo-transpiration to evaporation in irrigation without mulching film and flood irrigation, were 1.53∶1 and (0.92)∶1, respectively. The regression analysis of water consumption of greenhouse pepper and the water surface evaporation revealed that even in different irrigation modes did the water consuming models of greenhouse pepper using water surface evaporation as its reference had very good correlativity, especially in irrigation without mulching film in which the correlation coefficient was 0.834.
出处
《干旱地区农业研究》
CSCD
北大核心
2005年第2期54-58,共5页
Agricultural Research in the Arid Areas
基金
中国科学院遗传所农业资源研究中心创新项目"华北地区地下水资源预测研究"项目资助
