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大田试验条件下,比较不同品种紫云英在湖北省单季稻区(洪湖)和双季稻区(黄陂)的差异,为不同区域适宜品种的选择提供依据。不同品种在洪湖的单株分枝数、单株复叶数均高于黄陂,而株高、表观叶面积均低于黄陂。不同品种在同一生态区的干物质量存在差异,洪湖以丰城青杆种最高,达1 914 kg/hm2,黄陂以弋江种最高,达1 864 kg/hm2。相同品种在不同生态区的产量也存在差异,大桥种、余江大叶种、丰城青杆种、粤肥2号的产量表现为洪湖高于黄陂,而其余品种则低于黄陂。不同生态区紫云英养分积累量存在差异,洪湖丰城青杆种的碳、氮、钾积累量最高,弋江种的磷积累量最高,黄陂弋江种的各养分积累量均最高。单季稻区应优选丰城青杆种,双季稻区优选弋江种。
Under field conditions, the differences of different types of Astragalus sinicus in single-cropping rice fields (Honghu) and double-cropping rice fields in Hubei Province were compared to provide basis for the selection of suitable varieties in different regions. Different varieties in Honghu the number of branches per plant, the number of compound leaves per plant were higher than that of yellow emperor, while the plant height, apparent leaf area were lower than the yellow emperor. The dry matter mass of different cultivars in the same ecological zone is different. Honghu is the highest with Fengcheng greenbelt, reaching 1 914 kg / hm2. The highest in Huangjiang with Yijiang is 1864 kg / hm2. The yields of the same varieties in different ecoregions also differed. The production of Daqiao, Yujiang, Yefeng 2 and Yuefen 2 showed that Honghu was higher than Huangpi, while the remaining varieties were lower than Huangpi. There were differences in the nutrient accumulation in Astragalus sinicus in different ecological zones. The accumulation of carbon, nitrogen and potassium of Fengzhu was the highest in Honghu, the phosphorus accumulation in Yijiang was the highest, and the accumulation of nutrients in Huangpi Yijiang was the highest. Single season rice area should be preferred Fengcheng green bar species, double cropping area preferred Yijiang species.