气培农业中根系与液滴相互作用的试验观察
Experimental observations on interaction between a root and droplets in relation to aeroponic agriculture
摘要：
气培法或无土农业是一种相对较新的实践类型，其中植物在没有土壤的情况下生长，同时通过雾化喷雾系统向悬浮的根部提供富含营养的水。喷嘴易于使用，用于将水（和肥料）（主要）供应到所需作物（或植物）的根和根毛以用于生产。我们通过实验测量其（a）喷雾漂移，（b）喷雾高度，（c）最大喷雾角度，（d）喷雾宽度和（e）液滴尺寸来表征垂直于重力上方输送水的喷雾喷嘴。实验在不同的入口压力下进行，并且通过处理使用光学（或高速）相机捕获的图像来获得上述参数中的大部分，有时沿着由高功率激光源照亮的平面。我们还研究了喷雾（或射流）行为在不同的垂直高度和不同的水平面使用独特的聚乙烯海绵的方法。我们研究了质量流率，吸收率，和液滴尺寸动态（作为时间和压力的函数），使用这种方法。水滴/液滴的相互作用也进行了研究的情况下，简单的多孔和不透水的表面。我们相信这项研究可以外推到其他喷嘴（尤其是喷雾）以获得类似的特征参数。因此，这项研究是至关重要的，在选择所需的喷雾系统，为一个给定的树冠，也有望在控制农业实践，如温室和公寓房间的一些使用。
英文摘要：
Aeroponics or Soil-less agriculture is a relatively new and recent type of practice, where plants are grown without soil while nutrient-rich water is provided via an atomized spray system to the suspended roots. Spray nozzles are easy-to-use in supplying water (and fertilizers) to (mainly) the roots and root hairs of the desired crop (or plant) for production. We characterize a spray nozzle delivering water vertically above against the gravity by measuring, experimentally, its (a) spray drift, (b) spray height, (c) maximum spray angle, (d) spray width, and (e) droplets sizes. Experiments were carried out at different inlet pressures and a majority of the above mentioned parameters were obtained by processing the images captured using optical (or high speed) camera, sometimes along a plane lighted by a high-power laser source. We also studied the spray (or jet) behaviour at different vertical heights and different horizontal planes using a unique polythene sponge method. We studied the mass flow rate, the absorption rate, and droplet size dynamics (as a function of time and pressure) using this method. The water drop/droplet interaction was also studied in the case of simpler porous and impervious surfaces as well. We believe that this study can be extrapolated to other nozzles (especially sprays) to obtain similar characteristic parameters. This study, hence, is critical in selecting the desired spray system for a given canopy and is also expected to be of some use in controlled agricultural practices such as in greenhouses and apartment rooms.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
