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为了筛选适合湖南省双季稻区种植利用的紫云英品种,对5个紫云英品种进行小区种植比较试验。结果表明,湘紫2号生育期短于湘肥2号、湘肥3号和余江大叶,与早花品种信阳紫云英相近;湘紫2号盛花期与信阳紫云英相近,明显早于其他3个品种;其盛花期鲜草产量23 842.5 kg/hm2,比信阳紫云英高39.9%;且其鲜草中氮养分含量高于其他品种。综合看,湘紫2号的盛花期较早、鲜草产量适中、养分含量高,且性状稳定、适应性广,适宜在湖南双季稻区及生态条件相近的同纬度双季稻区种植
In order to screen the suitable varieties of Astragalus mongholicus suitable for planting and utilization in the double cropping rice area of Hunan Province, five varieties of Astragalus sinicus were compared and plot cultivation was conducted. The results showed that the growth period of Xiangzui No.2 was shorter than that of Xiangfei 2, Xiangfei 3 and Yujiangye, and similar to that of the early flowering cultivar Xinyang Shianyuanying. Earlier than the other three varieties; its fresh-flowering fresh grass yield was 23 842.5 kg / hm2, which was 39.9% higher than that of Xiyun; and its nitrogen content in fresh grass was higher than other varieties. Comprehensive view, Xiang purple 2 flowering earlier, moderate yield of fresh grass, high nutrient content, and stable traits, wide adaptability, suitable for double cropping rice in Hunan and ecological conditions similar to the same latitude double cropping rice planting