ANALYSIS OF EFFICIENCY OF OVERHEAD IRRIGATION IN CONTAINER PRODUCTION
ANALYSIS OF EFFICIENCY OF OVERHEAD IRRIGATION IN CONTAINER PRODUCTION
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DOI：
10.21273/hortsci.26.7.848
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发表时间：
1991-07-01
期刊：
影响因子：
1.9
通讯作者：
KNOX, GW
中科院分区：
文献类型：
--
作者：
BEESON, RC;KNOX, GW
作为喷头类型，间距，植物类型和容器大小的函数的容器中捕获的水的体积进行了测量，用于销售大小的植物。 计算捕获的水百分比，并导出预测该值的模型。 当容器分开时，捕获的水百分比与容器上方圆柱体中包含的叶面积呈负相关，并且与盆栽间距下的总植物叶面积呈负相关。 这种关系是独立的叶片曲率（凹与凸）。 冠层密度的相关性较小，比叶面积的水捕获百分比。 灌溉应用效率分开的间距范围从37%，在一个紧密的间距到25%，在容器之间的间距为7.6厘米。 集装箱间距，冠层脱落，并可能有一些冠层保留的水，后来失去了蒸发被确定为与低效率的主要因素。 结果表明，更高的灌溉应用效率将保持只有植物移植到更大的容器之前，达到最大冠层的大小，而不是间距现有的容器，以实现更多的空间冠层生长。
Volume of water captured in a container as a function of sprinkler type, spacing, plant type, and container size was measured for marketable-sized plants. Percent water captured was calculated and a model to predict this value derived. Percent water captured was inversely related to the leaf area contained in the cylinder over the container when containers were separated, and with total plant leaf area at a pot-to-pot spacing. This relationship was independent of leaf curvature (concave vs. convex). Canopy densities were less related to percent water captured than leaf areas. Irrigation application efficiencies separated by spacing ranged from 37% at a close spacing to 25% at a spacing of 7.6 cm between containers. Container spacing, canopy shedding, and possibly some canopy retention of water later lost by evaporation were determined to be the main factors associated with the low efficiencies. The results suggest that higher irrigation application efficiencies would be maintained only if plants were transplanted to larger containers before reaching maximum canopy size rather than spacing existing containers to achieve more room for canopy growth.