草业学报Issue(8)：65-72,8.DOI:10.11686/cyxb2014349
马铃薯／燕麦间作对马铃薯光合特性与产量的影响
Effect of intercropping potatoes with oats on the photosynthetic characteristics and yield of potato
摘要
Abstract
Intercropping systems with four different potato-oat row ratios (2 ∶2,P2 O2 ;2 ∶4,P2 O4 ;4 ∶2, P4 O2 ;4∶4,P4 O4 )were tested to determine effects on the photosynthetic characteristics and yield of potato. During the flowering period,potato leaf area index (LAI)and leaf weight ratio (SLW)decreased significantly. After the first crops of oats are harvested,potatoes receive more light and growth space;thus SLW recovered to a degree.When the crops were mature,the LAI of potato in intercropping systems was higher than that in monoculture.Compared with other intercropping ratios,the LAI and total chlorophyll content under P4 O4 treatment were significantly higher during the entire growth period.During the flowering period,net photo-synthetic rate (P n ),stomatal conductance (G s )and transpiration rate (T r )of potato in intercropping systems significantly reduced compared to those in monoculture,while intercellular CO2 concentration (C i )significantly increased.However,the photosynthesis indexes decreased at maturation point.Compared to monoculture,in-tercropped potato returned significant increases in production,possibly due to increased tuber yield and market-able yield per plant,as well as reduced numbers of small potato.The highest yield was obtained under P4 O4 treatment.Intercropping with oats also returned land equivalent ratios (LER)greater than 1.LER was highest (1.22)under the P4 O2 treatment,followed by the P4 O4 treatment.The results suggest that potato/oat row ra-tios of 4∶2 or 4∶4 perform better than other ratios in this intercropping system.关键词
间作/马铃薯/燕麦/光合特性/产量Key words
intercropping/potato/oat/photosynthetic characteristics/yield引用本文复制引用
吴娜,刘晓侠,刘吉利,鲁文..马铃薯／燕麦间作对马铃薯光合特性与产量的影响[J].草业学报,2015,(8):65-72,8.基金项目
国家自然科学基金（31201177）资助。 （）
