土壤耕深对寒地山药生长发育及产量的影响

为确定适宜的土壤耕深度,为优质、高产栽培提供科学依据.以兴凯湖山药为试材,通过4种不同耕作深度的处理,研究了土壤耕作深度对寒地山药生长发育及产量的影响.结果表明:耕作深度对山药地上部茎叶的生长及生育时期无影响,但对地下部块根的延长生长、加粗生长,以及产量的形成具有显著的作用,土壤耕作深度以110 cm为宝.

Effects of Deep Tilling on Growth and Development and Yield on Chinese Yam in Cold Region

In order to probe the suitable soil tillage depth and provide scientific basis for the high quality and yielding cultivation of Chinese Yam,Xingkaihu Yam was taken as material to study the effects of deep tilling on growth and development and yield of Chinese Yam in the cold region by four different farming depths.The results showed that soil tillage depth of ridge had no effect on the development of stem and leaf and growth period of Chinese Yam in ridge culture in the cold region（Heilongjiang province）,but it had remarkable action on the extension and thickening growth of root tuber.The appropriated soil tillage depth was 110 cm.