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Diversity enhances agricultural productivity via rhizosphere phosphorus facilitation on phosphorus-deficient soils

文献类型： 外文期刊

作者： Li, Long 1 ; Li, Shu-Min 2 ; Sun, Jian-Hao 2 ; Zhou, Li-Li 2 ; Bao, Xing-Guo 3 ; Zhang, Hong-Gang; Zhang, Fu-Suo;

作者机构： 1.China Agr Univ, Coll Resources & Environm Sci, Minist Educ, Key Lab Plant & Soil Interact, Beijing 100094, Peoples R China

2.China Agr Univ, Coll Resources & Environm Sci, Minist Educ, Key Lab Plant & Soil Interact, Beijing 100094, Peoples R China; Gansu Acad Agr Sci, Inst Soil & Fertilizers, Lanzhou 730070, Peoples R China; NE Agr Univ, Resource & Environm Coll, Harbin 150030, Peoples R China

3.China Agr Univ, Coll Resources & Environm Sci, Minist Educ, Key Lab Plant & Soil

关键词： intercropping;interspecific rhizosphere effect;overyielding

期刊名称：PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA （ 影响因子：11.205； 五年影响因子：12.291 ）

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收录情况： SCI

摘要： Intercropping, which grows at least two crop species on the same pieces of land at the same time, can increase grain yields greatly. Legume-grass intercrops are known to overyield because of legume nitrogen fixation. However, many agricultural soils are deficient in phosphorus. Here we show that a new mechanism of overyielding, in which phosphorus mobilized by one crop species increases the growth of a second crop species grown in alternate rows, led to large yield increases on phosphorus-deficient soils. In 4 years of field experiments, maize (Zea mays L.) overyielded by 43% and faba bean (Vicia faba L.) overyielded by 26% when intercropped on a low-phosphorus but high-nitrogen soil. We found that overyielding of maize was attributable to below-ground interactions between faba bean and maize in another field experiment. Intercropping with faba bean improved maize grain yield significantly and above-ground biomass marginally significantly, compared with maize grown with wheat, at lower rates of P fertilizer application (< 75 kg of P_2O_5 per hectare), and not significantly at high rate of P application (> 112.5 kg of P_2O_5 per hectare). By using permeable and impermeable root barriers, we found that maize overyielding resulted from its uptake of phosphorus mobilized by the acidification of the rhizosphere via faba bean root release of organic acids and protons. Faba bean overyielded because its growth season and rooting depth differed from maize. The large increase in yields from intercropping on low-phosphorus soils is likely to be especially important on heavily weathered soils.

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[1]Intercropping maintains soil fertility in terms of chemical properties and enzyme activities on a timescale of one decade. Wang, Zhi-gang,Li, Xiao-fei,Jin, Xin,Christie, Peter,Li, Long,Bao, Xing-guo,Zhao, Jian-hua,Sun, Jian-hao.

[2]The role of complementarity and selection effects in P acquisition of intercropping systems. Li, Xiao-Fei,Zhang, Wei-Ping,Wang, Le-Hua,Tian, Xiu-Li,Li, Long,Wang, Cheng-Bao,Yang, Si-Cun,Jiang, Wan-Li,van Ruijven, Jasper. 2018

[3]High morphological and physiological plasticity of wheat roots is conducive to higher competitive ability of wheat than maize in intercropping systems. Liu, Yi-Xiang,Zhang, Wei-Ping,Li, Xiao-Fei,Christie, Peter,Li, Long,Sun, Jian-Hao.

[4]Contribution of interspecific interactions and phosphorus application to sustainable and productive intercropping systems. Xia, Hai-Yong,Wang, Zhi-Gang,Christie, Peter,Zhang, Fu-Suo,Li, Long,Zhao, Jian-Hua,Sun, Jian-Hao,Bao, Xing-Guo,Xia, Hai-Yong,Christie, Peter.

[5]Intercropping influenced the occurrence of stripe rust and powdery mildew in wheat. Luo, Huisheng,Jin, Ming'an,Jin, Shelin,Jia, Qiuzhen,Zhang, Bo,Huang, Jin,Wang, Xiaoming,Sun, Zhenyu,Shang, Xunwu,Cao, Shiqin,Duan, Xiayu,Zhou, Yilin,Chen, Wanquan,Liu, Taiguo.

[6]Intercropping enhances soil carbon and nitrogen. Cong, Wen-Feng,Li, Long,Zhang, Fu-Suo,Cong, Wen-Feng,van der Werf, Wopke,Hoffland, Ellis,Six, Johan,Sun, Jian-Hao,Bao, Xing-Guo.

[7]Root distribution and interactions between intercropped species. Li, L,Sun, JH,Zhang, FS,Guo, TW,Bao, XG,Smith, FA,Smith, SE.

[8]Interspecific complementary and competitive interactions between intercropped maize and faba bean. Li, L,Yang, SC,Li, XL,Zhang, FS,Christie, P.

[9]Dynamics of root length and distribution and shoot biomass of maize as affected by intercropping with different companion crops and phosphorus application rates. Xia, Hai-Yong,Christie, Peter,Zhang, Fu-Suo,Li, Long,Zhao, Jian-Hua,Sun, Jian-Hao,Bao, Xing-Guo,Christie, Peter.

[10]Community composition of ammonia-oxidizing bacteria in the rhizosphere of intercropped wheat (Triticum aestivum L.), maize (Zea mays L.), and faba bean (Vicia faba L.). Song, Y. N.,Marschner, P.,Li, L.,Bao, X. G.,Sun, J. H.,Zhang, F. S.. 2007

[11]Wheat/maize or wheat/soybean strip intercropping II. Recovery or compensation of maize and soybean after wheat harvesting. Li, L,Sun, JH,Zhang, FS,Li, XL,Rengel, Z,Yang, SC. 2001

[12]Effect of phosphorus application and strip-intercropping on yield and some wheat-grain components in a wheat/maize/potato intercropping system. Zhang, Enhe,Huang, Gaobao,Zhang, Lijun,Wang, Gang,Zhang, Lijun,He, Chunyu,Zhang, Bo,Wang, Qi,Qiang, Shengjun. 2011

[13]Wheat/maize or wheat/soybean strip intercropping I. Yield advantage and interspecific interactions on nutrients. Li, L,Sun, JH,Zhang, FS,Li, XL,Yang, SC,Rengel, Z. 2001

[14]Maize grain concentrations and above-ground shoot acquisition of micronutrients as affected by intercropping with turnip, faba bean, chickpea, and soybean. Xia HaiYong,Xue YanFang,Zhang FuSuo,Li Long,Zhao JianHua,Sun JianHao,Bao XingGuo,Eagling, Tristan. 2013

[15]Intercropping with wheat leads to greater root weight density and larger below-ground space of irrigated maize at late growth stages. Li, Long,Li, Long,Zhang, Fusuo,Sun, Jianhao. 2011

[16]Effect of intercropping on crop yield and chemical and microbiological properties in rhizosphere of wheat (Triticum aestivum L.), maize (Zea mays L.), and faba bean (Vicia faba L.). Song, Y. N.,Zhang, F. S.,Marschner, P.,Fan, F. L.,Gao, H. M.,Bao, X. G.,Sun, J. H.,Li, L.. 2007

[17]Effects of intercropping and nitrogen application on nitrate present in the profile of an Orthic Anthrosol in Northwest China. Li, WX,Li, L,Sun, JH,Guo, TW,Zhang, FS,Bao, XG,Peng, A,Tang, C. 2005

[18]Effects of nitrogen and phosphorus fertilizers and intercropping on uptake of nitrogen and phosphorus by wheat, maize, and faba bean. Li, WX,Li, L,Sun, JH,Zhang, FS,Christie, P. 2003

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