摘要
一年两熟区前茬残留物多为玉米残茬,连同杂草易使免耕播种机播种冬小麦时造成开沟器堵塞。针对该问题,提出了驱动圆盘刀嵌入组合式开沟器联合防堵原理,设计了一种驱动圆盘式防堵单元体,并分析和确定了其主要结构参数。田间试验表明,驱动圆盘防堵单元体能够有效解决秸秆堵塞问题,保证小麦免耕播种机的通过性。与条带粉碎式小麦免耕播种机相比,驱动圆盘式小麦免耕播种机根茬切断率提高了11.2%,土壤扰动量减少了58.8%。在小麦返青期的苗情监测表明,与条带粉碎式小麦免耕播种和传统耕作播种相比,利用驱动圆盘式防堵单元体播种的免耕地,0～20cm土壤层含水率最高,小麦分蘖数和次生根数最多,较好地满足一年两熟区农艺要求。
According to the problem of straw blocking of no-tillage winter wheat planting in corn residue and weed-covered fields in annual double cropping areas of China,this paper put forward an anti-blocking method that the combined opener was adopted embedded with driving disc,and the driving disc anti-blocking unit was designed for no-tillage wheat planter.Furthermore,the key parameters were analyzed and determined.The field experiment showed that the driving disc unit was effective in solving straw blocking and ensuring the passing ability of no-tillage wheat planter. Compared with strip-chopping wheat no-tillage planter, the driving disc no-tillage wheat planter improved the stubble-cutting rate by 11.2% and decreased soil disturbance by 58.8%. Compared with the fields planted by strip-chopping and traditional planters, the fields planted by driving disc no-tillage wheat planter have the highest soil moisture in 0-20 cm depth and the greatest number of tiller and secondary root, indicating this new planter can meet the requirements of agronomy in two-crop a year regions effectively.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2009年第9期117-121,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
中-澳合作项目(SMC/2002/094)
中国农业大学科研启动基金项目(2007028)
关键词
耕作
农艺
试验
免耕播种机
cultivation
agronomy
experiments
no-tillage planter
