农业机械学报2013，Vol.44Issue(7)：121-126,112,7.DOI:10.6041/j.issn.1000-1298.2013.07.021
变量喷洒喷头组合喷灌试验
Test and Evaluation on Variable-rate Irrigation Sprinkler
摘要
Abstract
Variable-rate nozzle achieves range and flow synchronous control according to the spraying shape and spray volume requirements.It has important significance on the precision irrigation.The variable nozzle with fan-shaped hole and static vane regulator was studied.Hydraulic performance,such as irrigation distribution and irrigation uniformity of variable nozzle under different pressure conditions was analyzed.Comparing with the traditional round nozzle spray domain,influence of variable vane regulator on nozzle performance and sensitivity to the working pressure were studied.The results of double factors repeated test showed that the single nozzle control area of variable precision irrigation sprinkler was reduced by 15.4％ than the traditional round nozzle.The sprinkler irrigation evenness was increased by 9.5％.The sprinkler irrigation intensity was reduced by 15.7％.The range was reduced by 5.9％.The spraying domain coefficients reached to 64.0％.Combination evenness variance analysis results showed that the regulator and pressure as well as the interaction between them had significant influence.The design of the variable modifiers needs to meet the performance of nozzle under different working pressure conditions.关键词
精确灌溉/变量喷头/组合均匀度/水量分布Key words
Precise irrigation/Variable-rate nozzle/Combination of uniformity/Water distribution分类
农业科技引用本文复制引用
韩文霆,姚小敏,朱冰钦,张超,周新梅,吴普特..变量喷洒喷头组合喷灌试验[J].农业机械学报,2013,44(7):121-126,112,7.基金项目
国家自然科学基金资助项目(51079140)、"十二五"国家科技支撑计划资助项目(2011BAD29B08)和高等学校学科创新引智项目(B12007) （51079140）
