Abstract: A tillage technology that the soil between maize rows is subsoiled and mulched by straw in summer and untilled till the maize has been furrow-planted in autumn was studied in the paper. The tillage technology can store water, preserve soilmoisture, cultivate soilfertility well. The field tests show that the productions both of maize and wheat were increased. The subsoiler and rotary-furrow-seeder were developed and got patent in China.