Interspecific complementary and competitive interactions between intercropped maize and faba bean
文献类型: 外文期刊
作者: Li, L 1 ; Yang, SC 2 ; Li, XL 2 ; Zhang, FS 2 ; Christie, P 2 ;
作者机构: 1.Beijing Agr Univ, Dept Plant Nutr, Beijing 100094, Peoples R China
2.Beijing Agr Univ, Dept Plant Nutr, Beijing 100094, Peoples R China; Gansu Acad Agr Sci, Inst Soils & Fertilizers, Lanzhou 730070, Peoples R China; Queens Univ Belfast, Dept Agr & Environm Sci, Belfast BT9 5PX, Antrim, North Ireland
关键词: maize;biological competition;grain;intercropping;interspecific hybridization;interspecific competition;root systems;effects;yields;faba beans;Zea mays;Pisum;Pisum sativum;Vicia;Vicia faba;Beijing;China;Gansu
期刊名称:PLANT AND SOIL ( 影响因子:4.192; 五年影响因子:4.712 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Interspecific complementary and competitive interactions between maize (cv. Zhongdan No. 2) and faba bean (Vicia faba cv. Linxia Dacaidou) in maize/faba bean intercropping systems were assessed in two field experiments in Gansu province, NW China, plus a microplot experiment in one treatment of one of the field experiments in which root system partitions were used to determine interspecific root interactions. Intercropping effects were detected, with land equivalent ratio values of 1.21-1.23 basedon total (grain+straw) yield and 1.13-1.34 based on grain yield. When two rows of maize were intercropped with two rows of faba bean, both total yield and grain yield of both crop species were significantly higher than those of sole maize and faba bean on an equivalent area basis. When two rows of pea (Pisum sativum cv. Beijing No. 5) were intercropped with two rows of faba bean, neither total yield nor grain yield of faba bean was higher than of sole faba bean on an equivalent area basis. Interspecificcompetition between maize and faba bean was relatively weak, with mean relative crowding coefficients of 0.99-1.02 for maize and 1.55-1.59 for faba bean. The microplot experiment in which partitions were placed between root systems showed a significantpositive yield effect on maize when the root systems intermingled freely (no partition) or partly (400 mesh nylon net partition) compared with no interspecific root interaction (plastic sheet partition).
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