大豆科学2024，Vol.43Issue(6)：725-734,10.DOI:10.11861/j.issn.1000-9841.2024.06.0725
大豆品种及品种混合与玉米间作对玉米/大豆间作生产力的影响
Effects of Soybean Varieties and Mixed Soybean Intercropped with Maize on Productivity of Maize/Soybean Intercropping Systems
摘要
Abstract
In order to select suitable soybean varieties to intercrop with maize to improve productivity of maize/soybean intercropping system.A field experiment was carried out from 2021 to 2022 in Zhangye,Gansu province,China,the experimental treatments included:maize/Changnong 15(M/CN15),maize/Longzhonghuang 601(M/LZH601),maize/Longdou78-1(M/LD78-1),maize/Williams82(M/Williams82);and maize intercropped with mixed two varieties of soybeans,maize/(LD78-1+Williams82),recorded as M/2SM;maize intercropped with mixed four varieties of soybean,maize/(Changnong15+Longzhonghuang601+Longdou78-1+Williams82),recorded as M/4SM.We investigated crop yield of intercropped and pure stand,and analyzed the productivity of each intercropping system(productivity),land equivalent ratio(LER),partial land equivalent ratio(pLER),overyielding(OY),and aggressivity of soybean relative to maize(Asm)in order to clarify the effects of different soybean varieties on crop yield,intercropping system productivity,and interspecific interaction.The results showed that the productivity of each intercropping system was significantly higher than the weighted average productivity of the corresponding monocrops,the LER values of M/LD78-1,M/LZH601 and M/CN15 were greater than 1,whereas the LER value of M/Williams82,M/2SM and M/4SM were less than 1.The pLERs of each intercropping system were less than 0.5,whereas the pLERm was greater than 0.5,and the greatest pLERm of 0.72 was obtained by M/LZH601.The OY of soybean in each intercropping system was negative,and the OY of maize was positive,the highest OY of maize was obtained by M/LZH601 at 44.13％;the aggressivity value of soybean relative to maize was negative between intercropping systems,and the aggressivity value of soybean relative to maize in M/LZH601 was the weakest as-0.673.Asm was significantly negatively correlated to the productivity of the intercropping system.In summary,there was not intercropping yield advantage if maize intercropped with mixed soybean varieties,Longzhonghuang 601 is suitable varieties for maize/soybean intercropping system intercropping in the Hexi Corridor irrigation area.关键词
玉米/大豆间作/大豆品种/玉米间作混合大豆/生产力Key words
maize/soybean intercropping/soybean variety/maize intercropped with mixed soybean/productivity引用本文复制引用
赵建华,李春杰,孙建好,李伟绮,吴科生,陈亮之,杨新强,郑浩飞..大豆品种及品种混合与玉米间作对玉米/大豆间作生产力的影响[J].大豆科学,2024,43(6):725-734,10.基金项目
国家重点研发计划(2022YFD1900200) （2022YFD1900200）
国家自然科学基金(32060261). （32060261）
