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对12个国内外引进的紫花苜蓿品种进行了适应性比较和石灰施用量试验,连续两年的试验结果表明,国外引进品种以WL320表现最好,其次为加拿大得龙和胜利者,三者的两年平均干草产量分别是10 830、10716、10 656 kg/hm2;国内品种以草原1号表现最好,两年平均干草产量为7 172 kg/hm2。5个石灰用量试验结果表明,石灰最适施用量为4.5 t/hm2,可以较好地调节苏南丘陵地区偏酸土壤的酸碱度,以适合紫花苜蓿生长,取得较好的增产效果。
Twelve alfalfa cultivars introduced at home and abroad were compared for adaptability and lime application rate. The results of two consecutive years showed that WL320 was the best introduced foreign variety, followed by Canada Long and Victory, and the three The average annual hay production in the two years was 10 830, 10 716 and 10 656 kg / hm 2, respectively. The best performance of domestic breeds was Prairie No.1, with an average hay production of 7 172 kg / hm2 for two years. Appropriate application rate of 4.5 t / hm2, can better regulate the acidity and alkalinity of acid soil in the hilly area of southern Jiangsu to suit the growth of alfalfa and achieve better yield increase.