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本文对以垅作双条播分层施肥为主体的大豆“三垅”高产栽培配套技术进行了单项分解比较试验分析，并着重从保护性施氮的观点讨论了大豆结瘤和固氮状况，为总结大豆“三垅”高产栽培经验以及进一步完善和提高其配套技术水平提供科学依据。
In this paper, the high-yield cultivation techniques of Soybean “Sanjiu”, which is dominated by double sowing and fertilizing, were compared and analyzed experimentally. The nodulation and nitrogen fixation status of soybean was discussed from the perspective of protective nitrogen application. Soybean “Sanchi” high-yielding cultivation experience and to further improve and improve the level of its supporting technology to provide a scientific basis.