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利用大豆品种南豆12,在玉米套作大豆模式下,对影响玉米套作大豆复合群体产量效益的带宽比、播期、群体配置3个主要因子进行了试验研究。结果表明:以玉米窄行40 cm、宽行160 cm为玉米套作大豆最优带宽配置;在与早熟和中熟玉米套作时,6月18日是南豆12获得高产的最适播期,与迟熟玉米套作时,6月26日是南豆12获得高产的最适播期,玉米套作南豆12的适宜播种期以玉豆共生期控制在42 d以内为宜;玉米6万株.hm-2、大豆9.9万株.hm-2是玉豆两季作物双高产高效的最优复合群体配置。
Using the soybean variety Nandou 12, three main factors influencing the yield and yield of soybean compound population were studied in this paper, including the corn ratio, sowing date and population allocation. The results showed that the optimal width of corn was 40 cm for corn and 160 cm for width. The optimum sowing date for high yield was Nantou12 on June 18 , And late maturing maize, June 26 is the optimum sowing date for high yield of Nandou 12, and the appropriate seeding period of maize intercropping Nantou 12 is controlled within 42 days in the symbiotic period of maize. Maize 6 000.hm-2, soybean 99000. hm-2 is two-season crop of jade double high yield and efficiency of the optimal compound population configuration.