| To solve the problem of hard to seed corn in the former ridge without tilling in the northeast of China where the temperature is low and it always blows with lots of sands,the mode of avoiding rootstalks by planting two rows in one big ridge is brought up in this paper."One big ridge,two rows" is a technology that builds on the older "one ridge,one row" method of planting.The width of ridge top is 700mm,which is 3 times as the width of the conventional ridge.The field tests showed that this technology of no-till planter can successfully avoid corn rootstalks and steadily plant corn in the field with many stand-up corn rootstalks.The seeding quality meets the agronomic requirements.Compared with the conventional planting mode,this technology can raise soil temperature by about 1℃,reduce cost of planting by 350 yuan per hectare and increase yield by 14.2%.It is a perfect planting mode for conservation tillage in the northeast of China. |