雷小龙,杨文浩,刘礼阳,刘洪男,任万军,陈 勇.杂交稻气送式集排器成穴供种装置设计与试验[J].农业机械学报,2018,49(11):58-67.
LEI Xiaolong,YANG Wenhao,LIU Liyang,LIU Hongnan,REN Wanjun,CHEN Yong.Design and Experiment of Seed Hill Feeding Device in Pneumatic Centralized Metering Device for Hybrid Rice[J].Transactions of the Chinese Society for Agricultural Machinery,2018,49(11):58-67.
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杂交稻气送式集排器成穴供种装置设计与试验   [下载全文]
Design and Experiment of Seed Hill Feeding Device in Pneumatic Centralized Metering Device for Hybrid Rice   [Download Pdf][in English]
投稿时间:2018-08-06  
DOI:10.6041/j.issn.1000-1298.2018.11.007
中文关键词:  杂交稻  气送式集排器  成穴供种装置  供种性能
基金项目:国家重点研发计划项目(2018YFD0301204、2017YFD030171)
作者单位
雷小龙 四川农业大学
农业部西南作物生理生态与耕作重点实验室 
杨文浩 四川农业大学 
刘礼阳 四川农业大学 
刘洪男 四川农业大学 
任万军 农业部西南作物生理生态与耕作重点实验室 
陈 勇 农业部西南作物生理生态与耕作重点实验室 
中文摘要:为适应杂交稻气送式集排器的穴播要求,设计了一种集中定量供种的成穴供种装置。阐述了杂交稻气送式集排器成穴供种装置的工作原理,基于杂交稻机械物理参数和穴播农艺要求,提出了一种渐开线状型孔,确定了主要结构参数,构建了种子群充种和投种过程的力学模型。台架试验研究了杂交稻品种、渐开线型排种轮数量和转速对供种和成穴性能的影响。结果表明:渐开线型排种轮数量和转速分别为3~8和10~40r/min时,供种数量随渐开线型排种轮数量和转速增加而增加,供种数量范围为2392~17732粒/min;转速为20~40r/min时,供种数量变异系数均低于1.0%。成穴供种装置可适应多种杂交稻品种,供种数量受种子长度和容重的影响。穴供种数量随排种轮数量增加显著增加,随转速增加而降低;较优转速为20~30r/min,穴供种数量为19~38粒,其变异系数均低于25.0%。穴径随转速和排种轮数量增加而增加,穴距保持稳定。田间试验表明成穴供种装置可实现穴播,平均株数和穴距分别为3.07株/穴和180.2mm,符合水稻直播技术要求。
LEI Xiaolong  YANG Wenhao  LIU Liyang  LIU Hongnan  REN Wanjun  CHEN Yong
Sichuan Agricultural University;Key Laboratory of Crop Ecophysiology and Farming System in Southwest China, Ministry of Agriculture and Rural Affairs,Sichuan Agricultural University,Sichuan Agricultural University,Sichuan Agricultural University,Key Laboratory of Crop Ecophysiology and Farming System in Southwest China, Ministry of Agriculture and Rural Affairs and Key Laboratory of Crop Ecophysiology and Farming System in Southwest China, Ministry of Agriculture and Rural Affairs
Key Words:hybrid rice  pneumatic centralized metering device  seed hill feeding device  seed feeding performance
Abstract:In order to adjust to the requirement of hill seeding for pneumatic centralized metering device for hybrid rice, a seed hill feeding device was designed to supply quantitative seeds. According to the mechanical and physical properties of rice seeds and agronomic requirement of hill seeding, the involute type model hole was introduced. The main structural parameters of the seed hill feeding device were determined and the mechanical models of seed filling and throwing processes were established. The effects of varieties of rice seeds, number of involute type feeding unit and rotational speed on seed feeding and hill forming performance were carried out in bench test. The results showed that when the number of involute type feeding unit was 3~8 and rotational speed was 10~40r/min, the seed quantity was increased with the increase of number of involute type feeding unit and rotational speed. The range of seed quantity was 2392~17732 grains per minute. The variation coefficient of seed quantity was less than 10% for the rotational speed of 20~40r/min. The seed hill feeding device could be applied in different varieties of rice seeds, but the seed quantity was affected by the length and bulk density of rice seed. The seed quantity per hill was increased with the increase of number of involute type feeding unit, and decreased with the decrease of rotational speed. The optimum rotational speed which resulted in the variation coefficient of seed quantity per hill less than 25.0% was 20~30r/min. The seed quantity per hill was 19~38 grains. The hill diameter was increased with the increase of number of involute type feeding unit and rotational speed. The seed spacing was stable for different treatments. The field experiments indicated that the hill seeding could be realized by using the seed hill feeding device. The average seedlings and seed spacing were 3.07 seedlings per hill and 180.2mm, respectively, which met the agronomic requirements of rice direct seeding. The results can provide basis for structural design of pneumatic centralized metering device and hill seeding for hybrid rice.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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