马铃薯/玉米不同行比套作对马铃薯品种产量和土地当量比的影响  

Yield of Potato and Land Equivalent Ratio(LER) in Potato/Maize Intercropping Systems with Different Row Number Ratios and Potato Varieties

作　　者：黄承建[1,2] 赵思毅[1] 王季春[2] 廖采琴[2] 魏鑫[2] 郝艳睿[2] 

机构地区：[1]四川省达州市农业科学研究所,四川达州635001 [2]西南大学农学与生物科技学院,重庆北碚400716

出　　处：《作物杂志》2013年第2期115-120,共6页Crops

基　　金：国家重点基础研究发展计划(973计划)项目(2011CB100402)

摘　　要：以4个不同类型马铃薯品种单作为对照,设置2∶2和3∶2两种马铃薯/玉米行比,研究马铃薯/玉米套作对马铃薯块茎产量和土地当量比的影响。结果表明,马铃薯块茎产量套作显著低于单作,套作3∶2行比显著高于2∶2行比,套作品种以中薯5号最高,其次为费乌瑞它,鄂薯5号和米拉最低。但复合群体的套作优势与套作马铃薯产量并不呈正向相关。套作米拉3∶2行比、费乌瑞它3∶2行比、费乌瑞它2∶2行比、中薯5号3∶2行比、鄂薯5号2∶2行比(LER分别为1.40、1.35、1.31、1.24、1.19)具有较明显的套作优势,可在生产中采用;鄂薯5号3∶2行比(1.05)套作优势不明显;米拉2∶2行比(1.00)和中薯5号2∶2行比(0.88)无套作优势,不宜在生产中采用。In order to improve the total yield and land equivalent ratio （LER） in potato/maize intercropping sys- tems, a potato/maize intercropping field experiment with two different potato-maize row ratios and four potato varie- ties was carried out to determine the yield and yield related traits of potato and LER under intercropping condition. The ratio 2：2 meant two rows of potato to two rows of maize and that 3：2 meant three rows of potato to two rows of maize. The results showed that intercropping led to a significant decrease in the tuber yield. Compared with 2：2 row ratio intercropping systems, tuber yield was substantially higher in 3：2 row ratio intercropping systems. In addition, the highest tuber yield was recorded in Zhongshu5, followed by Favorita and EshuS, the lowest in Mira. Nonetheless, the intercropping advantages were not positively correlated with the tuber yield of potato, but both the tuber yield and the grain yield of maize. The LER was 1.40,1.35,1.31,1.24,1.19 for Mira/maize 3：2 system, Favorita/maize 3：2 system, Favorita/maize 2：2 system, Zhongshu5/maize 3 ： 2 system, Eshu5/maize 2： 2 system, respective- ly,which suggested that there were noticeable advantages in these intercropping systems, while no remarkable ad- vantage in Eshu5/maize 2：2 system （1.05） and no advantage in Mira/maize 2：2 system （1.00） and Zhongshu5/ maize 2：2 system（0.88） in the production.

关 键 词：马铃薯 玉米套作 行比 品种 产量 土地当量比 

分 类 号：S532[农业科学—作物学]