Click on “Download PDF” for the PDF version or on the title for the HTML version.

If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.

Abstract. In order to resolve the problem of residue-blockage in no/minimum till wheat seeding in maize-straw covered field in double cropping area of North China-Plain, a field experiment was conducted to study the residue flow characteristics with the widely used strip rotary seeder and a controlled seeder. High speed video analysis showed that during no-minimum till seeding process, residue had two major motion forms: translation and rotation, and two blocking forms: twining on one opener or blocked between openers. The strip-tillage seeder could throw the residue up and bury them with soil to reduce residue accumulation thus avoid blockage. Dual factors test of straw length and straw coverage showed that straw length and straw coverage significantly influenced anti-blockage performance, the longer the straw was,

the heavier the straw coverage was, the higher the blockage grade was. In order to archive a satisfied anti-blockage performance that do not impact no-till seeding, the maize straw length of straw should not be longer than 9.1cm. Working parameter test of the strip tillage seeder showed that travel speed and rotate speed significantly influenced blockage index and torque, while the travel speed become faster, the blockage index turned higher, and the torque turned up at fist then turned down at 4km/h, the higher the rotate speed was, the lower the blockage index was and the bigger the torque was, optimal working parameter was choose at 320r/min of rotate speed and 4km/h of travel speed.