Competition for Light and Crop Productivity in Agro-forestrial Systems in Hilly Red Soil Region-A Case Study of Choerospondias axillaris Intercopping with Arachis hypogaea

Abstract

Abstract: An agro-forestrial intercopping field experiment on Choerospondias axillaris cropped with Arachis hypogaea was undertaken in Subtropical China,to study the effect of agro-forestrial intercopping on photosynthetically active radiation(PAR) and yield of crop.The results showed that there was a significant decline in PAR and A.hypogaea yield in agro-forestrial systems.Compared to sole A.hypogaea, A.hypogaea yield in equivalent area was decreased by 35.9% and 44.6% in 5 year old and 9-year-old Choerospondias axillaris agro-forestrial systems,respectively.In addition,there was a significant spatial variability of PAR and A.hypogaea yield in agro-forestrial systems,and they increased with distance from tree line.Moreover, A.hypogaea yield had a significant correlation to PAR,which indicated that competition for light is one of the key factors to decrease yield of A.hypogaea.

Key words: wetland recovered from farmland, wetland soil, phosphorus (P), characteristics of adsorption and desorption, Caizi Lake.

CLC Number:

S181

Wang Xingxiang, Zhang Bin, Wang Mingzhu, Zhang Taolin, He Yuanqiu. Competition for Light and Crop Productivity in Agro-forestrial Systems in Hilly Red Soil Region-A Case Study of Choerospondias axillaris Intercopping with Arachis hypogaea[J]. cje, 2002, (4): 1-5,11.

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