GY8果园喷雾机喷雾特性研究

doi:10.3969/j.issn.1000-2006.2015.01.025

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南京林业大学学报（自然科学版） ›› 2015, Vol. 58 ›› Issue (01): 135-141.doi: 10.3969/j.issn.1000-2006.2015.01.025

GY8果园喷雾机喷雾特性研究

张海锋¹,许林云^1*,徐业勇²,蒋雪松¹,张慧春¹,贾志成¹,张昊天¹,徐铭铭¹

1.南京林业大学机械电子工程学院,江苏南京 210037;
2.新疆林业科学院,新疆乌鲁木齐 830000

出版日期:2015-01-31 发布日期:2015-01-31
基金资助:
收稿日期:2014-02-26 修回日期:2014-05-29
基金项目:“十二五”国家科技支撑计划(2014BAD08B04); 国家林业公益性行业科研专项项目(201004052); 江苏高校优势学科建设工程资助项目(PAPD)
第一作者:张海锋,硕士。*通信作者:许林云,教授,博士。E-mail: lyxu@njfu.com.cn。
引文格式:张海锋,许林云,徐业勇,等. GY8果园喷雾机喷雾特性研究[J]. 南京林业大学学报:自然科学版,2015,39(1):135

Research on spray characteristics of GY8 orchard sprayer

ZHANG Haifeng¹, XU Linyun^1*, XU Yeyong², JIANG Xuesong¹, ZHANG Huichun¹, JIA Zhicheng¹, ZHANG Haotian¹, XU Mingming¹

1.College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China;
2.Xinjiang Academy of Forestry Sciences, Urumqi 830000, China

Online:2015-01-31 Published:2015-01-31

摘要/Abstract

摘要： 研究了GY8果园喷雾机的喷雾压力、测点位置、风机转速对雾滴粒径的影响,以及冠层位置、喷雾机行驶速度对雾滴覆盖率和穿透性的影响。结果表明:喷雾压力和测点位置是影响雾滴粒径的主要因素,果树高度、树冠密实度和喷雾机行驶速度是影响雾滴覆盖率和穿透性的主要因素。雾滴粒径随喷雾压力增大而减小,雾滴在风力输送过程中,雾滴过大易沉降,过细则易飘失,但在2～3 m距离内雾流稳定,且雾滴粒径D₅₀(体积中径)在200 μm左右,风机转速对雾滴粒径影响很小。各冠层位置的叶片背向覆盖率均远小于面向覆盖率。对于树形较大的果树,雾滴覆盖率随冠层高度增加而减小,各层分布很不均匀; 对于树高小于3 m的果树,各层分布均匀且覆盖率较高。3种果树不同垂直层面雾滴覆盖率均随喷雾深度增加而减小。雾滴覆盖率随喷雾机行驶速度增加而减小,行驶速度增加1倍时,不同冠层高度和冠层不同垂直层面覆盖率分别平均减小31.8%和44.3%; 当喷雾机行驶速度为0.5 m/s时,雾滴具有更好的穿透性,果树可获得更大的雾滴覆盖率。

Abstract: The control efficiency of pest in orchard are closely related with spray characteristics of orchard sprayer. This paper experimented and analyzed the effects of spraying pressure, test position, fan speed on droplet size and the effects of canopy position, running speed on droplet coverage and penetrability according to the GY8 orchard sprayer. Results showed that droplet size was decreased with the increase of spraying pressure. During the air conveying, the bigger were droplets easy to fall off, the smaller were droplets easy to drift. However the spray flow was steady in the range of 2-3 m, and the droplet size D₅₀ was close to 200 μm, and fan speed had no significant effect on droplet size. The droplet coverage of leaves ’ back was far smaller than that of the front in each canopy position. The droplet coverage decreased with the increase of canopy height in larger fruit trees, and each layer was clearly not uniform. However the coverage was well-distributed and high when the trees were lower than 3 m. The coverage of different canopy’s vertical planes decreased with the increase of spray depth. The droplet coverage decreased with the increase of running speed, when the speed increased by 200%, and the coverage of different canopy’s heights and different canopy’s vertical planes were decreased by 31.8% and 44.3% respectively. The fruit trees could get higher coverage when the running speed was 0.5 m/s.

中图分类号:

S491

张海锋,许林云,徐业勇,等. GY8果园喷雾机喷雾特性研究[J]. 南京林业大学学报（自然科学版）, 2015, 58(01): 135-141.

ZHANG Haifeng, XU Linyun, XU Yeyong, JIANG Xuesong, ZHANG Huichun, JIA Zhicheng, ZHANG Haotian, XU Mingming. Research on spray characteristics of GY8 orchard sprayer[J].Journal of Nanjing Forestry University (Natural Science Edition), 2015, 58(01): 135-141.DOI: 10.3969/j.issn.1000-2006.2015.01.025.

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GY8果园喷雾机喷雾特性研究

Research on spray characteristics of GY8 orchard sprayer

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