安徽沿江双季稻区适宜紫云英品种比较研究

Comparative Research on Different Varieties of Astragalus sinicus L. in Anhui Double Cropping Rice Areas along the Yangtze River

[目的]筛选适合安徽省沿江双季稻区种植利用的紫云英品种。[方法]2016年于安徽桐城通过田间小区试验对7个紫云英品种进行了比较研究。[结果]鲜草产量较高的品种为南昌种、湘肥1号、弋江籽,其中南昌种的鲜草量最高,达31 657.65 kg/hm^2,比湘肥1号增产0.51%,比弋江籽增产8.23%;信阳种、弋江籽、湘肥1号鲜草中氮磷钾养分含量高于其他品种;固氮、吸收富集磷钾能力最强的是弋江籽和湘肥1号,氮、磷、钾总积累量分别达193.50、186.45 kg/hm^2。[结论]从产青量、干物质量、养分富集能力等多方面综合考虑,确定弋江籽和湘肥1号适宜于安徽沿江双季稻区及生态条件相近的同纬度双季稻区的种植和利用。

[Objective] To screen proper Astragalus sinicus L.varieties suitable for Anhui Double Cropping Rice Areas along Yangtze River.[Method] A field experiment on 7 varieties of Astragalus sinicus was conducted in Tongcheng City of Anhui Province in 2016.[Result] Nanchangzhong, Xiangfei No.1 and Yijiangzi showed higher fresh grass yield. Among them, Nanchangzhong had the highest yield of fresh grass, which was 31 657.65 kg/hm^2, increased by 0.51% and 8.23% compared with Xiangfei 1 and Yijiangzi, respectively. The contents of nitrogen, phosphorus and potassium in the fresh grass of Xinyangzhong,Yijiangzi and Xiangfei No.1 were higher than those of the other four varieties. The total amount of nitrogen, phosphorus and potassium accumulated in Yijiangzi and Xiangfei No.1 was 193.50 and 186.45 kg/hm^2, respectively.[Conclusion] Considering the fresh plant weight, dry matter amount, nutrient enrichment capacity, Yijiangzi and Xiangfei No.1 were suitable to be planted in double-rice cropping region in Anhui Province along the Yangtze River and other regions with similar ecological conditions.