论文部分内容阅读
对5个紫花苜蓿(Medicago sativa)品种各茬的株高、干草产量、叶茎比以及营养成分进行分析。结果表明,各苜蓿品种株高和干草产量随着茬次的增加而降低,但品种间各茬次存在差异;生长季内3茬的苜蓿株高和干草产量WL-323和三得利表现最好。各品种中粗蛋白和粗脂肪含量第2、3茬高于第1茬,尤其是第2茬明显高于第1茬、第3茬,而粗纤维含量则相反;而品种间在主要营养物质含量方面则是三得利和WL-323表现最好。综合几项指标,三得利和WL-323在绿洲区表现特征最好,阿尔冈金表现不佳。从不同品种各茬次生产经济性状综合来看,第2茬的效应最好,可见,第2茬苜蓿是获得理想苜蓿干草的重要时期。
The plant height, hay yield, leaf - stem ratio and nutrition of five Medicago sativa cultivars were analyzed. The results showed that the plant height and hay yield of each alfalfa decreased with the increase of stubble, but there were differences among the stubble varieties. WL-323 and Suntory showed the best stubble and hay yield of three alfalfa varieties in the growing season. The content of crude protein and crude fat in the 2nd and 3rd stubble of each variety was higher than the 1st stubble, especially the 2nd stubble was significantly higher than the 1st and 3rd stubble, while the crude fiber content was the contrary; Suntory and WL-323 content is the best performance. In combination with several indicators, Suntory and WL-323 performed best in the Oasis area and Algonquin performed poorly. In terms of economic traits of secondary production of different varieties, the effect of the second stubble is the best. It can be seen that the second stubble alfalfa is an important period for obtaining the ideal alfalfa hay.