关键词: 旱作马铃薯, 旱作马铃薯

Abstract:

In order to obtain some dormancy alfalfa varieties that suited in Beijing Region, and used dormancy series of alfalfa to guide the domestic alfalfa planting regionalization. This article adopted a randomized block design, comparatively analysis the production performance of 7 different nondormant alfalfa in the Beijing Region. In 2010 August to 2011 October, the germination time of alfalfa, winter survival rate, growth rate, renewability, grass yield, ratio of dry and fresh weight, leaf stem ratio were determined. The results showed that different types of nondormant alfalfa had significant difference (P<0.05) on production performance, the grass yield of different varieties were significantly difference (P<0.05), the grass yield of semi-dormant alfalfa were significantly higher than that nondormant alfalfa. The grass yield of all varieties the first stubble>second stubble>third stubble. In the Beijing area, we basically should consider the cultivation and the introduction of dormancy and semi-dormant alfalfa of high-yield, the dormant and semi-dormant alfalfa could safely survived over the winter and the production performance were well that were suitable plant in Beijing area, if we cultivated nondormant alfalfa that had low survival rate, plant survival rate and productivity (7-9) in Beijing area we should adopted other agronomic measures to improve the survival rate.