摘要
针对固定道垄作保护性耕作技术推广中缺乏合适播种机具的问题，研制了固定道垄作小麦玉米两用免耕播种机。与之配套的拖拉机轮胎和机具地轮均在垄沟中行走，不压实播种带；播种作业时避开根茬，减少机具的堵塞，同时节省功耗；利用修垄装置对原垄进行修复，修复后松散的垄沿及播种带用组合镇压器镇压。通过调整、更换部分部件可以实现小麦、玉米两用播种。田间试验表明：避茬率达92％以上，对行性能好；修垄圆盘前进偏角为20°～45°时修复效果较好；所播种的小麦苗齐苗壮。该播种机可一次性完成施肥、播种、修垄、镇压等作业，满足在原垄上进行避茬免耕播种的生产要求。
The lack of appropriate planter is the main cause of the limitation of the development of Permanent Raised Bed （PRB） technology. A PRB planter was developed according to the agricultural requirement of mulching with high maize stubbles or whole wheat straw. The wheels of tractor and planter walk in the furrows, which don＇ t compact planting zones, and can sheer off the stubbles to avoid blocking and save energy. Reshaping devices were designed to reshape the former beds; while the combined press roller can be used to press the bedsides and the planting zones. Through replacing some components, the PRB planter fits to plant wheat and maize both. The field tests show that the ability of sheering off stubbles is good and the rate is about 92% ; the effect of reshaping beds is satisfied when the drift angle locates between 20°and 45°. It can complete fertilizing, seeding, reshaping and pressing operations, and can even sheer off the stubbles on the permanent raised beds to meet the requirements of no-tillage.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
2006年第3期83-87,共5页
Journal of China Agricultural University
基金
国际粮农组织"挑战计划--黄河流域旱农地区保护性耕作项目(CPWFYRB200508)"
