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

查看全文 作　　者：Qi [1,2,3]WANG;Zhanxiang [4]SUN;Wei [4]BAI;Dongsheng [5]ZHANG;Yue [2]ZHANG;Ruonan [2]WANG;Wopke VAN DER [3]WERF;Jochem [3]B.EVERS;Tjeerd-Jan [3]STOMPH;Jianping [1]GUO;Lizhen [2]ZHANG

机构地区：[1]State Key Laboratory of Severe Weather(LASW),Chinese Academy of Meteorological Science,Beijing 100081,China;[2]China Agricultural University,College of Agricultural Resources and Environmental Sciences,Beijing 100193,China;[3]Wageningen University,Centre for Crop Systems Analysis(CSA),Droevendaalsesteeg 1,6708 PB Wageningen,the Netherlands;[4]Tillage and Cultivation Research Institute,Liaoning Academy of Agricultural Sciences,Shenyang 110161,China;[5]Shanxi Agricultural University,College of Agriculture,Taigu 030800,China

出　　处：《Frontiers of Agricultural Science and Engineering》索引2021年第8卷第3期,共15页

基　　金：This research was funded by the National Key R&D Program of China(2016YFD0300202);the China Institute of Water Resources and Hydropower Research Team Construction and Talent Development Project(JZ0145B752017);the International Cooperation and Exchange of the National Science Foundation of China(31461143025);The work was partly funded by the European Union through the Horizon 2020 Program for Research and Innovation under grant agreement No.727217(ReMIX:redesigning European cropping systems based on species MIXtures). 摘　　要：Intercropping increases crop yields by optimizing light interception and/or use efficiency.Although intercropping combinations and metrics have been reported,the effects of plant density on light use are not well documented.Here,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 period.The 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 maize.The 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 intercrops.Across years the LUE of maize was 2.9 g·MJ–1 and was not affected by cropping system but increased with maize plant density.The LUE of peanut was enhanced in intercropping,especially in a wetter year.The yield advantage of maize-peanut intercropping resulted mainly from the LUE of peanut.These 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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LIGHT INTERCEPTION AND USE EFFICIENCY DIFFER WITH MAIZE PLANT DENSITY IN MAIZE-PEANUT INTERCROPPING

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