Hedgerow Intercropping Maize or CowpealSenna for Drymatter Production in Semi-Arid Eastern Kenya  

作　　者：J. M. Kinama C. K. Ong C. J. Stigter J. K. Ng＇ang＇a F. N. Gichuki 

机构地区：[1]Department of Plant Science and Crop Protection, University of Nairobi, Box 30197-00100, Nairobi, Kenya [2]Wageningen, Agric. University, Duivendaal 2, 6701 AP, The Netherlands [3]World Agroforestty Centre （1CRAF）, P.O Box 30667-00100, Nairobi, Kenya [4]Department of Meteorology, University of Nairobi, Box 30197-00100, Nairobi, Kenya [5]Department of Agricultural Engineering, University of Nairobi, Box 30197-00100, Nairobi, Kenya

出　　处：《Journal of Agricultural Science and Technology(B)》2011年第3期372-384,共13页农业科学与技术（B）

摘　　要：In a long term study photosynthetically active radiation was monitored for three rainy seasons to measure the effects of hedgerow intercropping in rotation with maize and cowpea in a senna/siamea and panicum/grass strip on biomass yield and light use efficiency. Maize/cowpea intercropped with senna siamea or grass stripped were compared with sole maize and cowpea. A ceptometer was applied to measure PAR interception by sole maize or cowpea or crop/tree and grass/crop interfaces and separation of PAR used by each plant or tree/grass component. Hedgerow intercropping increased PAR interception and biomass formation. C4 plants had higher LUE than C3 plants while combining C4 and C3 in the agroforestry system lowered LUE. The tree/crop interfaces increased PAR interception than at 1 m and 2 m away from the hedgerow. The row of maize or cowpea at lm intercepted more PAR than the row at 2 m from hedgerow while the cowpea row next to the hedgerow was depressed compared to the rows in the middle rows which had higher yields. The maize or cowpea row next to the grass strip was more stressed than the rows in the middle of the alley.

关 键 词：Hedgerows intercropping maize/cowpea yield light use efficiency. 

分 类 号：S513[农业科学—作物学] S344.2