【摘要】 根据云南省晋宁县特有的生态和经济发展特点，在冬闲田上用小黑麦 WOH939、WOH830、NTH237三个品种与光叶紫花苕分别以6：4和7：3的比例混播，共6种组合为研究对象，测定分析了各混播处理中植株高度、叶面积指数、产草量的变化规律。结果表明，不同处理在同一生态环境下表现出相似的叶面积指数及产草量变化规律：小黑麦的叶面积指数从孕穗期之后逐渐下降，而光叶紫花苕的叶面积指数始终保持上升趋势，混播草地叶面积变化规律与小黑麦相似。各混播草地产草量快速增长阶段出现在小黑麦的分蘖期到孕穗期；在开花期，干草产量可以达到9．7～12．4 t/hm~2。更多还原

【Abstract】 From October 2003 to April 2004,based on the ecological and economic conditions of testarea,three cultivars of triticale and one cultivar of hairy vetch were planted.The test was proceeded inmixed grassland with grasses and legume,in which the ratio of grass to legume are 6:4 and 7:3.Theresults showed that,under similar ecological condition,each mixture had similar change trend on LAI andgrass yield.From tiller period to spike period,each mixture got into quick growth.After booting stage,LAI of triticale gradually fell,but that of hairy vetch always climbed.LAI of mixed grassland was similarto that of triticale.Hay grass yield of different mixture can reach 9.7-12.4t/ha at blooming stage.更多还原