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LIGHT INTERCEPTION AND USE EFFICIENCY DIFFER WITH MAIZE PLANT DENSITY IN MAIZE-PEANUT INTERCROPPING

Frontiers of Agricultural Science and Engineering 2021年第3期8卷 432-446页

作者： Qi WANG Zhanxiang SUN Wei BAI Dongsheng ZHANG Yue ZHANG Ruonan WANG Wopke VAN DER WERF Jochem B.EVERS tjeerd-jan stomph Jianping GUO Lizhen ZHANG State Key Laboratory of Severe Weather(LASW) Chinese Academy of Meteorological ScienceBeijing 100081China China Agricultural University College of Agricultural Resources and Environmental SciencesBeijing 100193China Wageningen University Centre for Crop Systems Analysis(CSA)Droevendaalsesteeg 16708 PB Wageningenthe Netherlands Tillage and Cultivation Research Institute Liaoning Academy of Agricultural SciencesShenyang 110161China Shanxi Agricultural University College of AgricultureTaigu 030800China

Intercropping increases crop yields by optimizing light interception and/or use *** intercropping combinations and metrics have been reported,the effects of plant density on light use are not well ***,we examined the light interception and use efficiency in maize-peanut intercropping with different maize plant densities in two row configurations in semiarid dryland agriculture over a two-year *** field experiment comprised four cropping systems,i.e.,monocropped maize,monocropped peanut,maize-peanut intercropping with two rows of maize and four rows of peanut,intercropping with four rows of maize and four rows of peanut,and three maize plant densities(3.0,4.5 and 6.0 plants m^(-1) row)in both monocropped and intercropping *** mean total light interception in intercropping across years and densities was 779 MJ·m^(-2),5.5%higher than in monocropped peanut(737 MJ·m^(-2))and 7.6%lower than in monocropped maize(843 MJ·m^(-2)).Increasing maize density increased light interception in monocropped maize but did not affect the total light interception in the *** years the LUE of maize was 2.9 g·MJ–1 and was not affected by cropping system but increased with maize plant *** LUE of peanut was enhanced in intercropping,especially in a wetter *** yield advantage of maize-peanut intercropping resulted mainly from the LUE of *** results will help to optimize agronomic management and system design and provide evidence for system level light use efficiency in intercropping.

关键词： dryland agriculture light interception light use efficiency maize-peanut intercropping semiarid

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