云南省不同试验区小麦蚕豆间作的产量优势分析与评价

 小麦蚕豆间作是云南省主要间作种植模式之一，具有提高产量，减少病虫害，提高养分、水分和光能利用效率等优势。本文基于2001—2010年本间套作课题小组40余组田间试验研究结果，对小麦蚕豆间作体系在云南陆良、玉溪、石林和昆明4个试验区的产量优势进行分析评价。结果表明：小麦蚕豆间作具有明显的增产优势。间作小麦比单作小麦平均增产1324%，间作蚕豆比单作蚕豆平均增产1480%，土地当量比（LER）平均值为114。但不同试验区的间作产量效应差异较大，其中玉溪、陆良和昆明试验区间作产量优势较大，LER分别为121,114和114。玉溪试验区间作产量优势主要来自于蚕豆，而其他试验区间作产量优势主要来自于小麦。

Analysis and Evaluation of Yield Advantages in Wheat and Faba Bean Intercropping System in Yunnan Province

Wheat and faba bean intercropping is one of the main intercropping patterns in Yunnan Province. It can improve yields, decrease occurrence of pests and diseases, and improve utilization efficiency of nutrient, water and light energy. Based on more than 40 groups of field experiment results by our project team from 2001 to 2010, the yield advantages of wheat and faba bean intercropping were analyzed in 4 experimental sites including Luliang, Yuxi, Shilin and Kunming. The results showed that the yields of wheat and faba bean were increased by 1324% and 1480% respectively in intercropping. The mean value of land equivalent ratio (LER) was 114, indicating yields advantage in intercropping system. Nevertheless, intercropping yield advantage had a apparent difference between 4 experimental sites. The LER were 114, 121, and 114 in Luliang, Yuxi, and Kunming respectively. The yields competitiveness (Awf) was primarily from faba bean in Yuxi, whereas from wheat in other sites.