Millet/peanut intercropping at a moderate N rate increases crop productivity and N use efficiency,as well as economic benefits,under rain-fed conditions

作     者：LIU Zhu NAN Zhen-wu LIN Song-ming YU Hai-qiu XIE Li-yong MENG Wei-wei ZHANG Zheng WAN Shu-bo LIU Zhu;NAN Zhen-wu;LIN Song-ming;YU Hai-qiu;XIE Li-yong;MENG Wei-wei;ZHANG Zheng;WAN Shu-bo

作者机构：Shandong Academy of Agricultural SciencesJinan 250100P.R.China Agronomy CollegeShenyang Agricultural UniversityShenyang 110866P.R.China College of Life SciencesShandong Normal UniversityJinan 250014P.R.China 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2023年第22卷第3期

页      面：738-751页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：supported by the National Key Research and Development Program of China(2020YFD1000905) the Natural Science Foundation of Shandong Province,China(ZR2020MC094) 

主　　题：millet peanut intercropping N input yield economics 

摘      要：Cereal and legume intercropping has been widely adopted to increase crop productivity in sustainable farming systems *** different intercropping combinations,millet and peanut intercropping can be adapted to most waterlimited ***,there are few studies on the differences in yield characteristics and nitrogen use efficiency between millet/peanut intercropping and monocultures under different nitrogen (N) application *** objective of this study was to determine the yield advantages and economic benefits,as well as the appropriate N application rate,of millet/peanut intercropping.A two-yearfield experiment was conducted with three cropping patterns (monoculture millet,monoculture peanut and millet/peanut intercropping) and four N rates (0,75,150 and 225 kg ha^(-1)).The results showed that the land equivalent ratio (LER) and net effect (NE) of the intercropping system reached their highest levels at the N input of 150 kg ha^(-1)in 2018 and 2019 (1.04 for LER,0.347 Mg ha^(-1)for NE,averaged across two years).Millet was the dominant crop in the intercropping system (aggressivity of millet and peanut (Amp)0,competitive ratio of millet and peanut (CRmp)1),and millet yields achieved their highest values at N inputs of 225 kg ha^(-1)for monoculture and 150 kg ha^(-1)for *** reached its highest levels with N inputs of 150 kg ha^(-1)for all planting patterns over the two *** combined with an N input of 150 kg ha^(-1)achieved the highest net income of 2 791 USD ha^(-1),with a benefit-cost ratio of 1.56,averaged over the two *** the perspective of economics and agricultural sustainable development,millet/peanut intercropping at 150 kg N ha^(-1)seems to be a promising alternative to millet or peanut monoculture.