Design and experiment on handheld air-assisted pollination device

Ding Suming; Xue Xinyu; Cai Chen; Qin Weicai; Fang Jinbao; Sun Zhu

doi:10.3969/j.issn.1002-6819.2014.13.003

Volume 30 Issue 13

Jun. 2014

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Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE) > 2014 > 30(13): 20-27. > DOI: 10.3969/j.issn.1002-6819.2014.13.003

Ding Suming, Xue Xinyu, Cai Chen, Qin Weicai, Fang Jinbao, Sun Zhu. Design and experiment on handheld air-assisted pollination device[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2014, 30(13): 20-27. DOI: 10.3969/j.issn.1002-6819.2014.13.003

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Design and experiment on handheld air-assisted pollination device

1.
Nanjing Research Institute of Agricultural Mechanization, Ministry of Agriculture, Nanjing 210014, China
2.
Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China

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Received Date: February 24, 2014
Revised Date: May 27, 2014
Published Date: June 30, 2014

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Abstract

Abstract

Abstract: Pollination is a very important process for high yield and quality of fruits production. The artificial and bee pollinations are wildly used in fruits production, but they are unadaptable to large scale production. So a kind of handheld air-assisted pollination device was developed. Through theoretical calculation, the air supply device was determined to adopt 6 impellers, the impeller diameter is 38 mm and the guide blades width is 18 mm. The motor is driven by DC power. A wind velocity indicator was used and the test ring was put at 500 mm ahead of the air inlet which is connected with a set of rams to fan pipes. The ram's diameter is 38 mm, same as the impeller. The results of fan performance test showed that the air volume was 3.0?10-3 m3/s at 8 000 r/min of fan speed, which can meet the design requirements. The highest total pressure efficiency is 43% at 9 000 r/min of fan speed. With the speed increase, the total pressure efficiency dropped rapidly but the power increased and the variation trends of the air volume and air pressure are not significant. The fan property was tested and the performance curve graphic was drawn. The air velocity field at different rotational speeds of the handheld air-assisted pollination device were studied and validated by the experiment data. The results showed that the velocity of central plane diffused at a fixed angle and decayed along the centre line, and the theoratical values closely related to the experiment data. In order to study the effect of airflow speed on pollination, the basic principle of pneumatic pollination was analyzed. Tests were conducted to validate the effect of airflow speed on pollens distribution based on pollens density, horizontal distribution and vertical distribution in the lab. The results show that the flow rate of nozzle is affected by wind velocity significantly. When the winds velocity reaches 25 m/s, the variation trends of the flow rate of nozzle are not significant with the speed increase. And the pollens distribution is affected by wind velocity significantly, and the dusting rate on horizontal and vertical distribution increase with the wind velocity increase. A peak in horizontal and vertical distribution is far away from the pollen source with the wind velocity increased. And the peak in vertical distribution keeps stable within a certain distance, which suggests that the pollens can be spread in straight line with a certain speed and directional airflow. The field experiment was conducted in a kiwi grove which was grown with "Hongyang" kiwi trees. The row space is 3 m×2 m, the height of the tree is 1.8 m. Three trees were randomly selected as sample trees, 10 flowers were selected in each tree, and the distance of pollination is 15-20 cm. The pollen coverage ratio of stigma in each flower was measured by micro camera and droplets image processing system. The results show that the pollen coverage increases significantly with the increase of the fan speed. When the nozzle outlet velocity is 19.5 m/s, the pollen coverage is 57.66%. The research can provide a reference for structural design and optimization of working parameters in same type device.
- agricultural machinery,
- optimization,
- experiments,
- pollination,
- air-assisted,
- flow velocity,
- kiwi

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References

[1]	翟衡，史大川，束怀瑞. 我国苹果产业发展现状与趋势[J]. 果树学报，2007，24(3)：355－360.Zhai Heng, Shi Dachuan, Shu Huairui. Current status and developing trend of apple industry in China[J]. Journal of Fruit Science, 2007, 24(3): 355－360. (in Chinese with English abstract)
[2]	陈学森，韩明玉，苏桂林，等. 当今世界苹果产业发展趋势及我国苹果产业优质高效发展意见[J]. 果树学报，2010，27(4)：598－604.Chen Xuesen, Han Mingyu, Su Guilin, et al. Discussion on today's world apple industry trends and the suggestions on sustainable and efficient development of apple industry in China[J]. Journal of Fruit Science, 2010, 27(4): 598－604. (in Chinese with English abstract)
[3]	张绍铃，贾兵，吴俊，等. 梨树授粉与花果管理关键技术[J]. 中国南方果树，2009，38(1)：36－38.
[4]	刘珠琴. 果树人工辅助授粉技术研究[J]. 北方园艺，2010(18)：67－68.Liu Zhuqin. Study on artificial pollination techniques of fruit tree[J]. Northern Horticulture, 2010(18): 67－68. (in Chinese with English abstract)
[5]	李靖，王珂，莫红，等. 不同授粉方式对桃无花粉品种坐果率的影响[J]. 河南农业大学学报，2005，39(4)：394－397.Li Jing, Wang Ke, Mo Hong, et al. Effect of different pollination ways on the fruit-setting of no pollination prunus persica varieties[J]. Journal of Henan Agricultural University, 2005, 39(4): 394－397. (in Chinese with English abstract)
[6]	王海儒，李建贵，杜研，等. 人工授粉对红富士苹果坐果率及品质的影响[J]. 新疆农业科学，2013，50(8)：1456－1461.Wang Hairu, Li Jiangui, Du Yan, et al. Effect of artificial pollination on red fuji apple fruit setting rate and quality[J]. Xinjiang Agricultural Sciences, 2013, 50(8): 1456－1461. (in Chinese with English abstract)
[7]	童越敏，彭文君，邢艳红，等. 三种授粉方式对温室凯特杏的影响研究[J]. 蜜蜂杂志，2005(2)：3－4.Tong Yuemin, Peng Wenjun, Xing Yanhong, et al. Study on the effect s of three pollination methods to greenhouse apricot[J]. Journal of Honeybee, 2005(2): 3－4. (in Chinese with English abstract)
[8]	刘朋飞，吴杰，李海燕，等. 中国农业蜜蜂授粉的经济价值评估[J]. 中国农业科学，2011，44(24)：5117－5123.Liu Pengfei, Wu Jie, Li Haiyan, et al. Economic values of bee pollination to china's agriculture[J]. Scientia Agricultura Sinica, 2011, 44(24): 5117－5123. (in Chinese with English abstract)
[9]	邵有全，禄海萍. 果蔬昆虫授粉增产技术[M]. 北京：金盾出版社，2010.
[10]	Razeto B, Reginato G, Larrain A. Hand and machine pollination of kiwi fruit[J]. International Journal of Fruit Science, 2005, 5(2): 37－44.
[11]	Virginia Pinillos, Julián Cuevas. Artificial pollination in tree crop production[J]. Horticultural Reviews, 2008,34: 239－276.
[12]	Cresswell J E, Davies T W, Patrick M A. Aerodynamics of wind pollination in a zoophilous flower, Brassica napus[J]. Functional Ecology, 2004, 18(6): 861－866.
[13]	雷玉山，王西锐，姚春潮，等. 猕猴桃无公害生产技术[M]. 陕西：西北农林科技大学出版社，2010.
[14]	梁春莉，赵锦，刘孟军. 枣不同品种花粉发芽特性及人工授粉研究[J]. 河北农业大学学报，2012，35(4)：41－45.Liang Chunli, Zhao Jin, Liu Mengjun. Pollen germination characteristics and artificial pollination between cultivars in Chinese jujube[J]. Journal of Agricultural University of Hebei, 2012, 35(4): 41－45. (in Chinese with English abstract)
[15]	李玉柱，苑明顺. 流体力学[M]. 北京：高等教育出版社，2008.
[16]	王慧敏，汤楚宙，李明，等.气流速度对杂交水稻制种授粉花粉分布的影响[J]. 农业工程学报，2012，28(6)：63－69.Wang Huimin, Tang Chuzhou, Li Ming, et al. Effect of airflow speed on pollens distribution for hybrid rice breeding pollination[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2012, 28(6): 63－69. (in Chinese with English abstract)
[17]	商景泰. 通风机实用技术手册[M]. 北京：机械工业出版社，2005.
[18]	梅光月，林光武，王卫国，等. 新型背负式喷雾喷粉机的研究试验[J]. 农业机械学报，1998，29（增刊）：99－104.Mei Guangyue, Lin Guangwu, Wang Weiguo, et al. Study and test on the new knapsack sprayer-duster[J]. Transactions of the Chinese Society for Agricultural Machinery, 1998, 29(S1): 99－104. (in Chinese with English abstract)
[19]	严荷荣，王忠群，季瑞，等. 新型手动喷粉器的研究与设计[J]. 农业机械学报，1998，29（增刊）：105－109.Yan Herong, Wang Zhongqun, Ji Rui, et al. Study and design on the new hand duster[J]. Transactions of the Chinese Society for Agricultural Machinery, 1998, 29(S1): 105－109.(in Chinese with English abstract)
[20]	陈怡群，常春，汤伯敏. 雾滴显微图像分析中处理亮度不均匀性的算法[J]. 农业工程学报，2009，25(1)：149－153.Chen Yiqun, Chang Chun, Tang Bomin. Algorithm for handling uneven brightness in image processing of fogdrop micrograph[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2009, 25(1): 149－153. (in Chinese with English abstract)

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