科尔沁沙地12个紫花苜蓿品种适应性研究

Study on adaptability of 12 alfalfa varieties in sandy land in Horqin

为探索不同苜蓿品种在科尔沁地区的适应性,以当地长期种植品种亮苜为对照,引进11个国内外苜蓿品种,分析各品种生产性能、营养品质及越冬率等,并采用灰色关联度分析法进行综合分析,以期筛选适合科尔沁沙地区种植的苜蓿品种。结果表明,2019年WL363品种2茬株高均最高,分别为63 cm和53.33 cm,产量最高的品种为亮苜,年产量为4.93 t/hm^(2);2020年第1茬株高最高品种为陇东苜蓿,为71.35 cm,第2茬和第3茬分别为WL440和WL363,为81.63 cm和66.4 cm,第4茬为亮苜,为61.27 cm,全年产量最高品种为WL168,为11.33 t/hm^(2);2019年CP第1茬和第2茬最高品种分别为WL168和新牧3号,均为22.1%,2020年第1茬、第2茬和第4茬均为龙牧803,分别为26.9%、22.8%和21.9%,第3茬为敖汉21.8%;2019年RFV第1茬和第2茬最高均为陇东苜蓿,分别为167和221,2020年第1茬和第2茬分别为三得利和甘农1号,分别为171和206,第3茬和第4茬分别为WL440和龙牧803、新牧3号,分别为216和199。灰色关联度综合分析结果表明,WL440、敖汉和中苜5号3个品种表现最优,综合性能均优于亮苜,适合在当地推广种植。

In order to explore the adaptability of different alfalfa varieties in Horqin region,12 alfalfa varieties from home and abroad were introduced,and the production performance,nutritional quality and overwintering rate of each variety were analyzed by using the grey relational analysis method,so as to screen the alfalfa varieties suitable for planting in Horqin region.The results showed that WL363 in 2019 had the highest plant height(63 cm and 53.33 cm,respectively),and the highest yield was Liangmu,with an annual yield of 4.93 t/hm^(2).In 2020,the highest plant height of the first crop was Longdong alfalfa(71.35 cm),the second and third crops were WL440 and WL363(81.63 cm and 66.4 cm),the fourth crop was Liangmu(61.27 cm),and the highest annual yield was WL168(11.33 t/hm^(2)).In 2019,the highest RFV of the first and second crops were Longdong alfalfa,with 167 and 221,respectively.In 2020,the first and second crops were Suntory and Gannong No.1,with 171 and 206,respectively.The third and fourth crops were WL440,Longmu 803,and Xinmu 3,with 216 and 199,respectively.The results of grey correlation analysis showed that WL440,Aohan and Zhongmu No.5 had the best performance,and their comprehensive performance was better than that of Liangmu,which was suitable for local cultivation.