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在香蕉种植网室内,研究了网室内外作物蒸散量和参考作物蒸散量的关系,以及网室内小气候变化对参考作物蒸散量的影响。研究结果显示,网室内参考作物蒸散量(ET0)和A级蒸发皿水面蒸发量分别比大田减少39%和42%,网室内香蕉树蒸腾量较网室外下降53%。网室内净辐射降低和风速减小是网室内香蕉树蒸腾量和参考作物蒸散量降低的主要原因,而网室内温度和饱和水汽压差变化对蒸散量的影响较小。建立了网室内参考作物蒸散量和网室内外水面蒸发量的关系,计算出该地区的A级蒸发皿系数为0.84。
In the banana plantation net, the relationship between crop evapotranspiration and reference crop evapotranspiration and the impact of microclimate change in netplant on reference crop evapotranspiration were studied. The results showed that the net evapotranspiration (ET0) and evapotranspiration of evapotranspiration on evapotranspiration were 39% and 42% lower than that of field and the transpiration of banana in tree net was 53% lower than that of net. The decrease of net radiation and the decrease of wind speed were the main reasons for the decrease of banana tree transpiration and reference crop evapotranspiration in net house. The change of net room temperature and saturated vapor pressure difference had little effect on evapotranspiration. The relationship between reference indoor evapotranspiration (EWEV) and evapotranspiration of indoor and outdoor water surface was established, and the A-level evaporimeter coefficient in this area was calculated to be 0.84.