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首页> 外文期刊>Acta Horticulturae >Performance of landscape ornamentals given irrigation treatments based on reference evapotranspiration.
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Performance of landscape ornamentals given irrigation treatments based on reference evapotranspiration.

机译：根据参考蒸散量进行灌溉处理后的景观观赏植物的性能。

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摘要

The use of reference evapotranspiration (ET0) information for scheduling irrigations and for determining water allotments for landscapes is being adopted by water purveyors, agencies, landscape architects, and maintenance personnel. There is little research-based information relevant to landscape ornamental plant materials. The objectives of this project were to determine the response of 30 ornamental species to irrigation treatments with respect to ET0 and to further refine estimates of ornamental plant water needs for acceptable aesthetic appearance. Experimental plots were established in Encinitas, California, USA, consisting of nine 180 m2 blocks allowing three irrigation treatments. Four plants of each of 30 species were planted into 6 m2 experimental units within the drip-irrigated blocks. Irrigation treatments were initiated in 1996 and consisted of 0.36, 0.24, and 0.12 ET0 with irrigation frequency determined by projected soil moisture deficit of 13 mm. During 1997 and 1998, irrigation treatments were adjusted to 0.36, 0.18, and 0.0 ET0. The aesthetic quality of 16 species was reduced with reduced irrigation amounts. Many of these species performed well at the 0.36 and 0.18 ET0 treatments but suffered at the 0.0 ET0 level. Aesthetic quality was not affected by irrigation treatment in 11 of the species studied. The results of the study show that ET0 treatments affect landscape quality for some species and acceptable appearance can be maintained with reduced irrigation.
机译：水供应商，机构，景观设计师和维护人员正在采用参考蒸散量（ET0）信息来安排灌溉时间并确定景观的水分配量。几乎没有与景观观赏植物材料相关的基于研究的信息。该项目的目标是确定30种观赏植物对ET0的灌溉处理的响应，并进一步完善对观赏植物需水量的估计，以达到可接受的美学外观。在美国加利福尼亚的恩西尼塔斯（Encinitas）建立了试验地块，由九个180平方米的地块组成，可以进行三种灌溉处理。将30种植物中的每一种的4种植物种植在滴灌块内的6平方米实验单元中。灌溉处理始于1996年，包括0.36、0.24和0.12 ET0，灌溉频率由13 mm的预计土壤水分亏缺确定。在1997年和1998年，灌溉处理分别调整为0.36、0.18和0.0 ET0。减少灌溉量会降低16种植物的美学品质。这些物种中有许多在ET0为0.36和0.18的情况下表现良好，但在ET0为0.0时遭受了损失。在所研究的11个物种中，美学质量不受灌溉处理的影响。研究结果表明，ET0处理会影响某些物种的景观质量，并且减少灌溉就能保持可接受的外观。

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