陕北风沙草滩区不同饲料桑引种研究

Study on introduction of different forage mulberry in sand marsh area of Northern Shaanxi, China

为了筛选适宜陕北风沙草滩区种植的饲料桑品种,试验初步选择6个国内饲料桑品种,通过观测同一生长阶段的成活率、茎粗、株高、冠幅、枝条数、产量、茎叶比及营养品质等指标性状,结合灰色关联度分析与隶属函数分析,对农艺性状和营养品质两大指标进行综合评价。结果表明:从农艺指标综合评价指数D值的排名来看:丰驰2号>鲁杂1号>秦饲1号>冀桑3号>育71-1>浙杂1号,说明丰驰2号和鲁杂1号生长适应性强;从营养品质指标综合评价指数E值的排名来看:丰驰2号>秦饲1号>鲁杂1号>冀桑3号>浙杂1号>育71-1,说明丰驰2号和秦饲1号品质较好,鲁杂1号次之。运用灰色关联度对参试品种的农艺性状、产量指标与营养品质进行综合评价,得出丰驰2号和鲁杂1号在灰色关联度分析中加权关联度值均>0.6,且在隶属函数分析中综合评价(D、E)值均>0.5,说明丰驰2号和鲁杂1号与理想品种关联系数最大,在文中试验区综合性能表现较好,可作为陕北地区饲料桑引种栽培的优选品种,适宜在陕北风沙草滩区推广种植。

In order to evaluate the fodder mulberry varieties suitable for planting in sand marsh area of Northern Shaanxi,China,six domestic fodder mulberry varieties were selected in the experiment.By observing the survival rate,stem diameter,plant height,crown width,number of branches,yield,stem-leaf ratio and nutritional quality at the same growth stage,combined with grey correlation analysis and membership function analysis,the agronomic characteristics and nutritional quality indicators were comprehensively evaluated.The results showed that the ranking of comprehensive evaluation D-value from agronomic index is:Fengchi 2>Luza 1>Qinsi 1>Jisang 3>Yu 71-1>Zheza 1,which indicates that Fengchi 2 and Luza 1 have strong growth adaptability.The ranking of comprehensive evaluation E-value from nutritional quality indicators is:Fengchi 2>Qinsi 1>Luza 1>Jisang 3>Zheza 1>Yu 71-1,which showed that quality of Fengchi 2 and Qinsi 1 is better,followed by Luza 1.The grey correlation degree was used to comprehensively evaluate the agronomic traits,productivity and nutritional quality of the tested varieties.The grey correlation degree of Fengchi 2 and Luza 1 are>0.6,and the comprehensive evaluation(D,E)values are>0.5,indicating Fengchi 2 and Luza 1 have the largest correlation coefficient with ideal varieties,the comprehensive performance is better in this experimental area,so they can be used as the preferred varieties as the fodder mulberry being promoted and planted in sandy marsh areas in northern Shaanxi,China.