9个绿肥紫云英品种(系)在汉中地区的适应性

Adaptability of nine Chinese milkvetch varieties(strains)in Hanzhong region

对9个紫云英(Astragalus sinicus)品种(系)的物候期、农艺性状及鲜草产量进行比较研究,以期筛选出适宜汉中地区栽培的紫云英品种(系),为汉中水稻(Oryza sativa)不同种植模式下紫云英推广应用提供优良品种(系)。结果表明:‘南郑种’、‘yH925’、‘宁波大桥’、‘湘紫1号’属于特早熟种,‘yiJ’、‘848711’、‘闽紫7号’、‘弋江籽’属于早熟种,‘湘紫4号’属中熟种。9个品种(系)盛花期鲜草产量差异较大,‘闽紫7号’鲜草产量最高,为24192.45 kg·hm^(−2);其次是‘yiJ’,为23494.50 kg·hm^(−2),与闽紫7号’差异不显著但显著高于其他品种(系);‘南郑本地种’最低,为12049.80 kg·hm^(−2),显著低于其他8个品种(系)。特早熟品种(系)中‘宁波大桥’在汉中适应性较好,株高、地上部分特征、根瘤及盛花期鲜草产量等综合特性表现较好,适宜在水稻直播模式中种植。早熟品种(系)中,‘闽紫7号’和‘yiJ’在汉中具有较强的适应性,盛花期鲜草产量优势显著,适宜在水稻机插秧和手插秧模式中种植。

A field trial was conducted to select the milkvetch varieties or strains suitable for Hanzhong and provide excellent variety for different planting patterns of rice by comparing the phenological period,agronomic characters,and fresh grass yield of nine Chinese milkvetch varieties.The results showed that the‘Nanzheng’variety,‘yH925’,‘Ningbodaqiao’,and‘Xiangzi No.1’were very early manuring milkvetch cultivars grown in Hanzhong.The‘yiJ’,‘848711’,‘Minzi No.7’,and‘Yijiang Zi’were early maturing milkvetch cultivars,and‘Xiangzi No.4’was a medium maturing variety grown in Hanzhong.In terms of grass yield,there is a significant difference between nine varieties.The fresh grass yield of‘Minzi No.7’was the highest with 24192.45 kg·ha^(−1) followed by‘yiJ’with 23494.50 kg·ha^(−1).The difference between‘Minzi No.7’and‘yiJ’was not significant but significantly higher than other varieties.The lowest was‘Nanzheng’with 12049.80 kg·ha−1,which was significantly lower than that of the other eight varieties.The‘Ningbodaqiao’species exhibit excellent characters as green manure in Hanzhong,due to which the plant height,aboveground part,root nodule,and fresh grass yield were better at the flowering stage,and thus can be used in a rice direct seeding mode.The fresh grass yield of‘Minzi No.7’and‘yiJ’were significantly higher than that of other early maturing varieties and were found to be excellent early maturing varieties.