摘要
采用滤纸法测定。试验表明喷洒水裂散的程度不仅与喷头的工作压力、喷嘴直径有关,且与喷洒水射流的雷诺数有关。提出常用旋转式喷头喷洒水滴沿程分布特性,喷洒水滴以累计水量为60％～70％的上限水滴直径作为旋转式喷头喷洒水滴代表性直径。给出了砂土、砂壤土、壤土、壤粘土和粘土在不同喷水定额下的允许喷灌强度,供修改GBJ85-85参考。
In this paper, it is found that atomized degrec of sprinkler water relates to working pressure, nozzle diameter and Reynold's number of the sprinkler jet. Distribution characters of water droplet were obtained for usual sprinklers used in our country at present. According to analyses of drop sizes, it is suggcsted that the drop diameter at the upper limit of 60％～70％ the summation of sprinkling water will be accepted as the typical drop diameter of the rotating sprinkler. Then the atomized, indicatrix is suggested for different nozzles and crops and the allowablc application rates are also suggested for different irrigation requirements, dropsizcs and soils.
出处
《江苏农学院学报》
CSCD
1992年第3期49-55,共7页
Jiangsu Agricultural Research
基金
国家标准<喷灌技术规范>重点科研项目
关键词
喷灌
雾化指标
喷灌强度
雾化
Sprinkler irrigation
Atomized indicatrix
Application rate
Intake rate of soil
