苏南丘陵山区秋播紫花苜蓿伴播作物及其播量的筛选  

Study on Companion Crop Selection and Its Sowing Rate for Alfalfa Seeding in Autumn in Hilly Area of South Jiangsu Province

作　　者：戚志强[1] 胡跃高[2] 曾昭海[2] 傅反生[3] 储国良[3] 

机构地区：[1]西南大学动物科技学院,重庆北碚400716 [2]中国农业大学农学与生物技术学院草业工程研究中心,北京100193 [3]江苏丘陵地区镇江农科所,江苏句容21400

出　　处：《草地学报》2008年第5期506-511,517,共7页Acta Agrestia Sinica

基　　金：农业部农业科技跨越计划项目(2000-22);重庆市自然科学基金重点项目(CSTX;2006BA1008)

摘　　要：为解决苏南丘陵区紫花苜蓿(Medicago sativaL.)苗期的杂草问题,选择多花黑麦草(Lolium multiflorumLam.)、小黑麦(X Triticosecale Wittm.)、苇状羊茅(Festuca arundinaceaSchreb.)3种作物作为紫花苜蓿的伴播作物,实施不同间、混作方式,通过测定分析产量、株高、杂草量等多个指标,筛选该地区适宜的紫花苜蓿伴播作物及其播量。综合表现较好的伴播组合为:16.7 kg/hm2紫花苜蓿+25.0 kg/hm2赣选一号多花黑麦草,撒播;16.7 kg/hm2紫花苜蓿+266.7 kg/hm2中新830小黑麦,紫花苜蓿行距40 cm条播,行间条播小黑麦。3种伴播作物对紫花苜蓿和杂草的抑制作用大小依次为"赣选一号"多花黑麦草>"中新830"小黑麦>苇状羊茅。In order to solve the weed problems during the seedling stage of alfalfa （Madicago sativa L. ）in hilly area of South Jiangsu Province, three companion crops, annual ryegrass （Lolium multiflorurn Lain. ）, triticale （X Triticosecale Wittm. ） and tall rescue （Festuca arundinacea Schreb. ）, were evaluated for their fitness and sowing rate by alfalfa yield and plant height as well as weeds emergence. Triticale （cv. Zhongxin 830） and annual ryegrass （cv. Ganxuan No. 1） had better performance as companion crops during alfalfa establishment, and the combinations were broadcast sowing of alfalfa at 16.7 kg/hm^2＋ annual ryegrass （Ganxuan No. 1） at 25. 0 kg/hm^2 and strip sowing alfalfa at 16. 7 kg/hm^2 with 40cm row spacing ＋ inter-row sowing triticale （Zhongxin 830） at 266.7 kg/hm^2. The sequence of better weed control of the studied companion crops was as follows： annual ryegrass （Ganxuan No. 1）〉triticale （Zhongxin 830）〉tall rescue.

关 键 词：紫花苜蓿 多花黑麦草 苇状羊茅 小黑麦 伴播作物 杂草 

分 类 号：S333.6[农业科学—作物遗传育种] S541[农业科学—农艺学]