与玉米间作的大豆，宜选育叶片大小中等、披针形或短椭圆形、叶柄短而粗、叶色深绿的品种。
The soybean variety under-sowing with maize ought to select that the leaf is middle size, lanceolate or elliptic, deep green colour, and the petiole is short and thick;
叶片变得萎黄，茎短而纤细，并且在茎、叶柄和叶片下表面会出现花青素变色。
Leaves develop chlorosis; stems are short and slender, and anthocyanin discoloration occurs on stems, petioles, and lower leaf surfaces.
叶无柄或具短叶柄，对5毫米的叶柄；不青春期的花被筒在里面。
Leaves sessile or shortly petiolate, petiole to 5 mm; perianth tube not pubescent inside.
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