Interspecific Root Interactions Enhance Biomass and Nutrient Acquisition of Millet (Setaria itlica) and Mungbean (Vigna radiata) in Intercropping System

文献类型： 外文期刊

第一作者： Zou, Xiaojin

作者： Zou, Xiaojin;Liu, Ziqi;Niu, Shiwei;Yang, Ning;Feng, Liangshan

作者机构：

关键词： Cereal; Legume; Nitrogen acquisition; Root morphology; Yield

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY （ 影响因子：0.822； 五年影响因子：0.906 ）

ISSN： 1560-8530

年卷期： 2018 年 20 卷 5 期

页码：

收录情况： SCI

摘要： Intercropping systems have been widely practiced because of the advantages in productivity and resource efficiencies. However, limited knowledge is available on how below-ground interspecific interaction affects yields and nutrient acquisition of crops in the intercropping. Pot experiments were carried out to facilitate the complementary induced by root interactions from below-ground in millet and mungbean intercropping. The data regarding yield, biomass, nutrient uptake, parameters of root morphology traits and photosynthesis were recorded. The experiment included three treatments: no barrier treatment (NB) allowing complete root interaction, mesh barrier (MB) of partial root interaction and solid barrier (SB) without any exchanges of water and nutrients and root interaction. The yields of millet and mungbean were increased by 53.6% and 27.8% in the treatments with complete root interactions compared to that without root interactions. Nitrogen (N), phosphorus (P) and potassium (K) acquisitions of crops were 1.71, 1.97 and 1.47 times for millet, and 1.25, 1.21, and 1.19 times for mungbean in complete root interactions as high as in no root interactions, respectively. The length and surface area was increased by 52.9 and 40.6% for millet while 51.4 and 46.8% for mungbean in complete root interactions compared to that in no root interactions. The improvement of yield and nutrient acquisition may result from crop structural and functional plasticity induced from interspecific root interactions of below-ground. The results would contribute to a comprehensive understanding of the response of millet and mungbean to the root interaction on the basis of interspecific facilitation for millet/mungbean intercropping. (C) 2018 Friends Science Publishers

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