The results indicated that: the dry material accumulation quantity and filling duration under full irrigation were higher than that of drought condition;
结果表明：灌水处理条件下，不同品种干物质积累均较自然降水条件下干物质积累重有所提高，且不同程度的延长了灌浆持续时间；
The add of potassium and sulfuric nutrients improves accumulation of soybean dry material.
钾硫营养增加大豆干物质积累。
The accumulation of dry material increased with the increasing of ATNF during jointing and heading stage, furthermore Indica were higher than Japonica.
干物质积累量，拔节期、抽穗期所有供试品种均随施氮量的增加而增加，籼型品种积累量高于粳型品种；
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