山药套管、半套管栽培技术的比较试验

The Comparative Study on the Pipe Culture Technique and Half-pipe Culture Technique of Dioscorea opposita Thunb

以"农大山药1号"的山药段子为播种材料,对山药套管、半套管栽培技术进行比较试验。结果表明:1.套管和半套管的埋置角度和深度均以角度20°、深度20cm为最佳;在此条件下均能明显提高山药块茎的外观品质,而且所产山药块茎横截面均呈扁圆形。2.半套管技术收获山药块茎相对较费工,破损率也较高,且采用PVC材料制成的半套管本身破损率严重,说明该技术需进一步改进。3.在套管田间埋置适当的前提下,套管技术是比较成熟的山药栽培技术。

Through the segment of Nongda yam (No.1.) as seeding materials,we investigated the pipe culture technique and half-pipe culture technique.The results showed that the best angle and depth of cover up with earth were 20° and 20cm in spite of any pipe technique.In this condition, the exterior quality of subterranean tubers showed significantly increasing,and the shape of cross section of subterranean tubers showed elliptical.The half-pipe culture technique was proved more labor and more damaged(including half-pipe itself that made from PVC)as compared with the pipe culture technique,so this technique should be further improved.In the suitable cover up with earth, the pipe culture technique was relatively mature technique.