Citation: | LI Xiaoran, LIAO Qingxi, DU Wenbin, et al. Damage patterns and germination experiments of rice seeds using high-speed air-assisted centralized seed metering device[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2024, 40(21): 46-55. DOI: 10.11975/j.issn.1002-6819.202406072 |
Multiple compression and impact of the air-assisted centralized seed metering device on rice seeds during high-speed sowing (≥12km/h) can easily lead to seed damage and adversely affects the emergence rate. This study aims to explore the damage of rice seeds under single and multiple mechanical compression in the air-assisted centralized seed metering device, according to the damage accumulation theory. The fitting equations of seed impact damage and compression were clarified to determine the matching range of stirring speed and the conveying airflow parameters during high-speed seeding. A systematic analysis was also implemented to explore where the seed was damaged under the repeated compression by the seed mixing device during high-speed seeding. The multiple impacts of airflow were evaluated during transportation and distribution in the air-assisted centralized seed metering device. The single compression test was carried out on the hybrid rice and conventional rice varieties. An elastic-plastic model was constructed suitable for rice seeds, in order to determine the critical value of elastic-plastic deformation. The multiple equal displacement compression tests were then carried out to determine the process of damage to rice seeds under multiple compressions. The critical deformation of rice seeds was determined and verified to combine with the seed germination rate test under multiple compressions. According to the conservation of energy, the critical speed was constructed at which the rice seeds were compressed and damaged by the stirring device. The fitting equation of impact damage and compression was combined to analyze the speed of seed airflow impact damage. The results showed that the crushing forces of conventional and hybrid rice seeds under single compression were (118.4±35.6) N and (113.2±39.9) N, respectively, the deformation during crushing was (0.59±0.07) mm and (0.63±0.11) mm, respectively, and the average critical deformation of elastic plasticity was 0.4 and 0.44 mm, respectively. In multiple compression tests, the maximum compression force of the seeds remained consistent, when the compression distance was less than the elastic-plastic average critical deformation; Once the compression distance was greater than the critical elastoplastic deformation, the maximum compressive force on the seed decreased gradually. Verification tests were also performed on the rice seeds germination rate. There was the a 0.44 mm critical deformation of hybrid rice seeds that caused damage. When the deformation of compressed seeds was less than 0.44 mm, there was no significant difference in the germination rate between compressed and uncompressed seeds after multiple compressions; When the compression deformation of the seeds was greater than 0.44 mm, the germination rate of rice seeds decreased after multiple cycles of compression. Therefore, the deformation of rice seeds after being loaded should be avoided to be greater than 0.44 mm. After that, the rotation speed range of the stirring device should be lower than 125 r/min and the seed transport speed should be lower than 8.5 m/s, in order to reduce the compression and impact damage of the air-assisted centralized seed metering device on rice seeds. This finding can provide a theoretical basis and parameter range to match the operating parameters during rice high-speed sowing.
[1] |
梁玉玥. 稻麦旱作兼用气吹式精量排种器设计与试验[D]. 武汉:华中农业大学,2022.
LIANG Yuyue. Design and Experiment of Air Blowing precision Seed-Metering Device for both Riceand Wheat under Dry Cultivation [D]. Wuhan: Huazhong Agricultural University, 2022. (in Chinese with English abstract)
|
[2] |
罗锡文,廖娟,胡炼,等. 提高农业机械化水平促进农业可持续发展[J]. 农业工程学报,2016,32(1):1-11.
LUO Xiwen, LIAO Juan, HU Lian, et al. Improving agricultural mechanization level to promote sustainable agricultural development[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2016, 32(1): 1-11. (in Chinese with English abstract)
|
[3] |
廖庆喜,雷小龙,廖宜涛,等. 油菜精量播种技术研究进展[J]. 农业机械学报,2017,48(9):1-16. doi: 10.6041/j.issn.1000-1298.2017.09.001
LIAO Qingxi, LEI Xiaolong, LIAO Yitao, et al. Research progress of precision seeding for rapeseed[J]. Transactions of the Chinese Society for Agricultural Machinery, 2017, 48(9): 1-16. (in Chinese with English abstract) doi: 10.6041/j.issn.1000-1298.2017.09.001
|
[4] |
王磊,席日晶,廖宜涛,等. 油麦兼用型气送式集排器匀种涡轮设计与试验[J]. 农业机械学报,2021,52(8):62-72,97. doi: 10.6041/j.issn.1000-1298.2021.08.006
WANG Lei, XI Rijing, LIAO Yitao, et al. Design and test on even seeding turbine of air-assisted centralized metering device for rapeseed and wheat[J]. Transactions of the Chinese Society for Agricultural Machinery, 2021, 52(8): 62-72,97. (in Chinese with English abstract) doi: 10.6041/j.issn.1000-1298.2021.08.006
|
[5] |
雷小龙,廖宜涛,李兆东,等. 油麦兼用型气送式集排器供种装置设计与试验[J]. 农业工程学报,2015,31(20):10-18. doi: 10.11975/j.issn.1002-6819.2015.20.002
LEI Xiaolong, LIAO Yitao, LI Zhaodong, et al. Design and experiment of seed feeding device in air-assisted centralized metering device for rapeseed and wheat[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2015, 31(20): 10-18. (in Chinese with English abstract) doi: 10.11975/j.issn.1002-6819.2015.20.002
|
[6] |
丛锦玲. 油菜小麦兼用型气力式精量排种系统及其机理研究[D]. 武汉:华中农业大学,2014.
CONG Jinling. Study on Seeding System and Mechanism of Pneumatic Precision Metering Device for Wheat&Rapeseed[D]. Wuhan: Huazhong Agricultural University, 2014. (in Chinese with English abstract)
|
[7] |
李晓冉,廖庆喜,王磊,等. 稻麦油兼用高速气送式集排器型孔轮设计与试验[J]. 农业工程学报,2023,39(14):35-48. doi: 10.11975/j.issn.1002-6819.202303044
LI Xiaoran, LIAO Qingxi, WANG Lei, et al. Design and experiments of the type-hole wheel with high-speed air-assisted centralized metering device for rice, wheat and rapeseed[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2023, 39(14): 35-48. (in Chinese with English abstract) doi: 10.11975/j.issn.1002-6819.202303044
|
[8] |
李心平,高连兴,马福丽. 玉米种子力学特性的有限元分析[J]. 农业机械学报,2007,38(10):64-67,72. doi: 10.3969/j.issn.1000-1298.2007.10.016
LI Xinping, GAO Lianxing, MA Fuli. Analysis of finite element method on mechanical properties of corn seed[J]. Transactions of the Chinese Society for Agricultural Machinery, 2007, 38(10): 64-67,72. (in Chinese with English abstract) doi: 10.3969/j.issn.1000-1298.2007.10.016
|
[9] |
李心平,马福丽,高连兴. 玉米种子的跌落式冲击试验[J]. 农业工程学报,2009,25(1):113-116.
LI Xinping, MA Fuli, GAO Lianxing. Dropping impact experiment on corn seeds[J]. Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE), 2009, 25(1): 113-116. (in Chinese with English abstract)
|
[10] |
杨作梅,孙静鑫,郭玉明. 不同含水率对谷子籽粒压缩力学性质与摩擦特性的影响[J]. 农业工程学报,2015,31(23):253-260. doi: 10.11975/j.issn.1002-6819.2015.23.034
YANG Zuomei, SUN Jingxin, GUO Yuming. Effect of moisture content on compression mechanical properties and frictional characteristics of millet grain[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2015, 31(23): 253-260. (in Chinesewith English abstract) (in Chinese with English abstract) doi: 10.11975/j.issn.1002-6819.2015.23.034
|
[11] |
张克平,黄建龙,杨敏,等. 冬小麦籽粒受挤压特性的有限元分析及试验验证[J]. 农业工程学报,2010,26(6):352-356. doi: 10.3969/j.issn.1002-6819.2010.06.061
ZHANG Keping, HUANG Jianlong, YANG Min, et al. Finite element analysis and experimental verification of wheat grain under compression loads[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2010, 26(6): 352-356. (in Chinese with English abstract) doi: 10.3969/j.issn.1002-6819.2010.06.061
|
[12] |
李耀明,王显仁,徐立章,等. 水稻谷粒的挤压力学性能研究[J]. 农业机械学报,2007,38(11):56-59. doi: 10.3969/j.issn.1000-1298.2007.11.014
LI Yaoming, WANG Xianren, XU Lizhang, et al. Study on compression properties of rice grains[J]. Transactions of the Chinese Society for Agricultural Machinery, 2007,38(11): 56-59. (in Chinese with English abstract) doi: 10.3969/j.issn.1000-1298.2007.11.014
|
[13] |
王显仁,师清翔,倪长安. 水稻谷粒的压弯剪力学性能试验[J]. 农机化研究,2012,34(2):141-144. doi: 10.3969/j.issn.1003-188X.2012.02.032
WANG Xianren, SHI Qingxiang, NI Changan. Study on compression, bending and shearing properties of rice grain[J]. Journal of Agricultural Mechanization Research, 2012, 34(2): 141-144. (in Chinese with English abstract) doi: 10.3969/j.issn.1003-188X.2012.02.032
|
[14] |
陈树人,徐李,尹建军,等. 基于Micro-CT图像处理的稻谷内部损伤定量表征与三维重构[J]. 农业工程学报,2017,33(17):144-151. doi: 10.11975/j.issn.1002-6819.2017.17.019
CHEN Shuren, XU Li, YIN Jianjun, et al. Quantitative characterization of grain internal damage and 3D reconstruction based on Micro-CT image processing[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2017, 33(17): 144-151. (in Chinese with English abstract) doi: 10.11975/j.issn.1002-6819.2017.17.019
|
[15] |
CHU Y H, HAN Y L,JIA F G, et al. Analysis of the impact hulling behaviour of paddy grains[J]. Biosystems Engineering, 2022, 220: 243-257. doi: 10.1016/j.biosystemseng.2022.06.005
|
[16] |
JOHNSON K L.接触力学[M]. 徐秉业,罗学富,译. 北京:高等教育出版社,1992:9-223.
|
[17] |
徐立章,李耀明,丁林峰. 水稻谷粒与脱粒元件碰撞过程的接触力学分析[J]. 农业工程学报,2008,24(6):146-149. doi: 10.3321/j.issn:1002-6819.2008.06.029
XU Lizhang, LI Yaoming, DING Linfeng. Contacting mechanics analysis during impact process between rice and threshing component[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2008, 24(6): 146-149. (in Chinese with English abstract) doi: 10.3321/j.issn:1002-6819.2008.06.029
|
[18] |
何思明,廖祖伟,刘威,等. 颗粒物质冲击损伤特性研究[J]. 振动与冲击,2016,35(23):100-105.
HE Siming, LIAO Zuwei, LIU Wei, et al. Impact damage of granular material[J]. Journal of vibration and shock, 2016, 35(23): 100-105. (in Chinese with English abstract)
|
[19] |
THORNTON C. Coefficient of restitution for collinear collisions of elastic perfectly plastic spheres[J]. Journal of Applied Mechanic, 1997, 64(2): 383-386. doi: 10.1115/1.2787319
|
[20] |
何思明,吴永,李新坡. 颗粒弹塑性碰撞理论模型[J]. 工程力学,2008,25(12):19-24.
HE Siming, WU Rong, LI Xinpo. Theoretical model on elastic-plastic granule impact[J]. Engineering Mechanics, 2008, 25(12): 19-24. (in Chinese with English abstract)
|
[21] |
LIU X P, SHI Z A, ZHANG Y L, et al. Characteristics of Damage to Brown Rice Kernels under Single and Continuous Mechanical Compression Conditions[J]. Foods, 2024, 13: 1069. doi: 10.3390/foods13071069
|
[22] |
YUAN J C,WAN X Y, LIAO Q X, et al. Mechanical compression characteristics of rapeseed based on continuous damage theory[J]. Biosystems Engineering, 2022, 224: 301-312. doi: 10.1016/j.biosystemseng.2022.10.008
|
[23] |
The ASAE Physical Properties of Agricultural Products Committee. ASAE S368.4 DEC 2000(R2017) Compression Test of Food Materials of Convex Shape [S].St. Joseph: American Socity of Agircultural and Biological Engineers, 2017.
|
[24] |
NICOLÁS-GARCÍA M, ARZATE-VÁZQUEZ I, PEREA-FLORES M J. , et al. An overview of instrumented indentation technique for the study of micromechanical properties in food: a case study on bean seed coat[J]. Biosystems Engineering, 2021, 204(1): 377-385.
|
[25] |
朱永义,郭祯祥,田建珍,等. 谷物加工工艺及设备[M]. 北京:科学出版社,2002.
|
[26] |
杨光松. 损伤力学与复合材料损伤[M]. 北京:国防工业出版社,1995.
|
[27] |
TAVARES L M. Analysis of particle fracture by repeated stressing as damage accumulation[J]. Powder Technology, 2009, 190(3): 327-339. doi: 10.1016/j.powtec.2008.08.011
|
[28] |
TAVARES L M. Single-particle fracture under impact loading[J]. International Journal of Mineral Processing, 1998, 54(1): 1-28.
|
[29] |
程育仁,缪龙秀,侯炳麟. 疲劳强度[M]. 北京:中国铁道出版社,1990.
|
[30] |
GONG D Z, NADOLSKI S, SUN C B, et al. The effect of strain rate on particle breakage characteristics[J]. Powder Technology, 2018, 339: 595-605. doi: 10.1016/j.powtec.2018.08.020
|
[31] |
HAN Y L, ZHAO D, CHU Y H, et al. Breakage behaviour of single rice particles under compression and impact[J]. Advanced Powder Technology, 2021, 32(12): 4635-4650. doi: 10.1016/j.apt.2021.10.017
|
[32] |
李晓冉,廖庆喜,廖宜涛,等. 稻麦油兼用高速气送集排器螺旋斜置式搅种装置研制[J]. 农业工程学报,2024,40(4):52-63.
LI Xiaoran, LIAO Qingxi, LIAO Yitao, et al. Development of the spiral-inclined seed stirring equipment in high-speed air-assisted centralized metering for rice, wheat, and rapeseed[J]. Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE), 2024, 40(4): 52-63. (in Chinese with English abstract)
|