摘要
在播种过程中,由于种子与排种管、开沟器的碰撞和机组前进的共同作用,使得种子落地的位置是随机的,造成播种均匀性差,为解决此问题,该文研制了内嵌勺盘式舵轮免耕施肥播种机,主要由旋刀式苗带清整装置、内嵌勺盘式舵轮穴播器等组成。内嵌勺盘式舵轮穴播器由舵轮式穴播器和勺盘式排种器集成在一起,发挥勺盘式排种器精量取种和舵轮式穴播器定点投种的优势,实现玉米等株距精量播种。田间试验表明:种、肥深度变异系数分别为23.2%和20.2%,株距合格率达96%,出苗率达95%,机具通过性满足农艺要求。
Conservation tillage technology, which originated in Western developed countries, is an advanced agricultural production technology. Development of the precision no-till maize planter was the key to extend conservation tillage technology. The seed-metering device was an important part of the planter and was a core determinant of seeder characteristics and working performance. At present in China, precision seed-metering devices can be divided into mechanical devices and pneumatic devices. With the development of technology, China also gave birth to a number of new seed-metering devices. But the Westem developed countries augmented the precision seeder with new agricultural high technologies including satellite positioning systems, geographic information systems, expert intelligence systems, and remote-sensing technology. Those advances moved seeding technology toward higher precision, variable-rate capabilities, high efficiency, and intelligent controls. But in view of China＇s national conditions, intelligent planters have not been widely popularized or adopted. During the process of seeding, the seeds collided with the seeds tube and opener. Due to the combined effect of the collision and the machine moving forward, seed deposition was random, reducing seeding uniformity. To solve this problem, a no-tillage fertilization planter with embedded spoon disc helm wheel was developed. It was mainly composed of a rotary blade type seeding mechanism with a trimming device and an embedded spoon disc helm wheel dibbler. The rotary blade type seeding mechanism with trimming device was composed of a rotor and a rotary tillage straight cutter. The rotary cutter was arranged in front of the seeding and fertilizing rows, each row corresponding to two rotary cutters, and the rotation speed was 380 r/min. The embedded spoon disc helm wheel dibbler was integrated by the steering wheel of the dibble and the dipper disk seeding device, which has the advantage of throwing seeds at designated points with the steering wheel of the d
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2013年第19期16-23,共8页
Transactions of the Chinese Society of Agricultural Engineering
基金
山东省现代农业产业技术体系玉米创新团队建设项目
关键词
农业机械
肥料
机构
玉米
精量播种
agricultural machinery, fertilizers, mechanism, corn, precision sowing
