CAJ | 학술논문

　　本研究旨在研究不同品种紫花苜蓿对不同pH值土壤浸提液的适应性，为筛选和选育耐酸碱的紫花苜蓿品种提供理论基础。在10个不同 pH 值土壤浸提液处理下，研究了对不同紫花苜蓿(Medicago sativa L.)品种种子发芽和幼苗生长的影响。试验结果表明：在低 pH 值或高 pH 值浸提液处理下，各品种紫花苜蓿种子发芽受到显著抑制；pH 值为6.17、8.76、9.20时，虽抑制苜蓿种子发芽，但能够促进已发芽苜蓿种子的生长；发芽率、幼根长度与幼苗高度的比适宜用作鉴定苜蓿耐酸碱性的指标；pH 值在5.81~8.44时，各苜蓿品种的平均发芽率都在60%以上，能够正常生长；根据回归方程得，苜蓿生长的临界 pH 为5.06和9.17，极限 pH 为2.71和10.26。耐酸碱性强的苜蓿品种有‘中苜1号’、‘公农2号’和‘霍普兰德’。
　　본연구지재연구불동품충자화목숙대불동pH치토양침제액적괄응성，위사선화선육내산감적자화목숙품충제공이론기출。재10개불동 pH 치토양침제액처리하，연구료대불동자화목숙(Medicago sativa L.)품충충자발아화유묘생장적영향。시험결과표명：재저 pH 치혹고 pH 치침제액처리하，각품충자화목숙충자발아수도현저억제；pH 치위6.17、8.76、9.20시，수억제목숙충자발아，단능구촉진이발아목숙충자적생장；발아솔、유근장도여유묘고도적비괄의용작감정목숙내산감성적지표；pH 치재5.81~8.44시，각목숙품충적평균발아솔도재60%이상，능구정상생장；근거회귀방정득，목숙생장적림계 pH 위5.06화9.17，겁한 pH 위2.71화10.26。내산감성강적목숙품충유‘중목1호’、‘공농2호’화‘곽보란덕’。
The purpose of this paper was to study the adaptability of different alfalfa to soil extracts with different pH values in order to provide fundamental basis for selecting alfalfa with the most acid and alkali resistance. The effect of soil extracts with different pH values on the germination and seedling growth of 18 alfalfa varieties was investigated. The germination was inhibited under low or high pH of soil extracts. When pH values were 6.17, 8.76, 9.20, the seeds had germinated could be promoted growth to some extent. The germination rate and ratio of seedling height to root length were regarded as two suitable acid and alkali resistance indexes, but the fresh weight was not. The proportion of germination in the substrate with pH values from 6.43 to 8.44 was higher than 60%, and the seedling could grow normally. The critical pH was 5.06 and 9.17, and limiting pH was 2.71 and 10.26 through regression equation. Based on measured values, the 18 alfalfa varieties could be divided into 4 groups by AVERAGE cluster analysis. The results showed that‘Zhongmu No.1’,‘Gongnong No.2’and‘Hopeland’were most acid and alkali resistance.