春玉米套种夏大豆不同模式对大豆产量的影响

Effect of different intercropping models for spring maize and summer soybean on soybean production

【目的】研究春玉米后期套种夏大豆不同种植模式对大豆产量的影响,为春玉米合理套种夏大豆提供科学依据。【方法】以广西夏大豆主推品种桂夏1号和玉米品种正大619为供试材料,于2011年在广西3个有代表性的夏大豆产区进行春玉米套种夏大豆不同模式试验,研究适宜与春玉米后期套种夏大豆的最佳种植模式。【结果】垄上双行种植平均产量最高为2754.87kg/ha,垄沟单行种植(CK)平均产量为2466.57kg/ha,最低为垄上双行隔行种植,产量为2160.70kg/ha。【结论】春玉米后期套种夏大豆最为适宜的种植模式为春玉米后期垄上双行套种夏大豆。

[Objective]The present study was conducted to investigate the effect of different intercropping models for spring maize and summer soybean on the yield of summer soybean, and provide scientific references for rationally intercropping on them. [Method]Using Guixia 1 （summer soybean） and Zhengda 619 （maize） as test materials, the experiment was carried out to screen suitable planting models of spring maize intercropping with summer soybean at late stage in three typical summer soybean production areas in 2011. [Result]Soybean grown on the ridge with two lines got the highest average yield of 2754.87 kg/ha., followed by that grown in furrow with single line （2466.57 kg/ha）, the lowest average yield of soybean was 2160.70 kg/ha when grown on the ridge with two alternate lines with maize. There was significant difference in soybean yield between the model of growing soybean two lines on ridge and other models. [Conclusion]It was concluded that intercropping summer soybean two lines on ridge in late growing period of spring maize was an optimal planting mode in agricultural production.