Yannong 19 and Jimai 19. The results showed as follows: The dry weight of root in 60 cm soil layers increased by 12% in BP than in CFP, the root activity of deep soil layers improved significantly in BP than that in BFP.

• 结果表明,垄作栽培中由于小麦种植在垄顶上,0-60 cm土层根系干重较平作栽培增加12%25以上,深层土壤(20-60 cm)根系活力得到极显著提高。