农业机械学报2017，Vol.48Issue(11)：79-87,9.DOI:10.6041/j.issn.1000-1298.2017.11.010
油菜联合直播机组合式船型开沟器设计与开沟质量试验
Design and Ditching Quality Experiment on Combined Ship Type Opener of Direct Rapeseed Seeder
摘要
Abstract
Considering the facts that the winter rapeseed is vulnerable to waterlogging,the furrow should be ditched while mechanical planting.The soil of middle and lower reaches of Yangtze River is sticky and its moisture content fluctuates greatly,which leads the stability of the furrow difficult to be guaranteed at the time of planting.In order to solve the above problems,the design of ditching furrows system for direct rapeseed seeder was carried out,and a combined ship type opener was proposed to achieve ditching the furrow.According to the principle of soil sliding and plow forming,the main structure and technical parameters of combined ship type opener were analyzed and determined.Based on the 2BFQ-8 direct rapeseed seeder whose work width was 2 300 mm,the ditching performance experiment on rear plow,ship type plow and combined ship type opener was carried out in rice stubble field,whose moisture content was 21.4％,31.4％ and 46.6％,soil compactness was 1 320 kPa,846 kPa and 539 kPa.The furrow sections of furrows were mapped.The ditching performance experiment results indicated that shape of furrows ditched by ship type opener were more stable than that ditched by rear plow,and the width of seed bed which measured after ditched furrows by ship type opener was stable.The width and depth of furrows which ditched by combined ship type opener was 244.0 ～ 271.7 mm and 194.0 ～ 229.5 mm,its width stability coefficient and depth stability coefficient were more than 90％.The width of seed bed after ditching was 2 039.0 ～ 2 051.5 mm.The experiment result revealed that the furrows ditched by combined ship type opener satisfied the actual production requirements of ditching furrows.The research conclusion had great theoretical value and practical significance to the design of opener which worked under the condition of soil with high moisture content.关键词
稻茬田/畦沟/油菜联合直播机/组合式船型开沟器/沟型断面/试验Key words
rice stubble field/furrow/rapeseed direct seeder/combined ship type opener/furrow sections/experiment分类
农业科技引用本文复制引用
刘晓鹏,肖文立,马磊,刘立超,万国伟,廖庆喜..油菜联合直播机组合式船型开沟器设计与开沟质量试验[J].农业机械学报,2017,48(11):79-87,9.基金项目
农业部公益性行业科研专项(201503118-06)、农业部科研杰出人才及创新团队项目、湖北省技术创新专项重大项目(2016ABA094)、国家油菜产业技术体系专项(CARS-12)和中央高校基本科研业务费专项资金项目(2662017PY006) （201503118-06）
