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优质早籼舟９０３ 采用抛秧栽培具有促蘖争多穗创高产的优势， 但同时也存在着易倒伏的威胁。通过１９９６～１９９８ 年３ 年共３６ 块典型抛栽田块的调查和分析， 结果表明： （１） 在构成其产量的诸因素中， 单位面积有效穗数的直接作用最大； （２） 施肥对产量直接作用的大小顺序为钾肥＞ 有机肥＞ 氮肥＞ 总肥量＞ 磷肥。
High-quality early indica boat 903 using throwing transplanting cultivation has the advantages of promoting tillering and earning more yield, but at the same time there is a threat of easy lodging. Through the survey and analysis of 36 typical throwing planted plots from 1996 to 1998, the results showed that: (1) the direct effect of the effective panicle per unit area was the largest among the factors which constituted the yield; (2) The order of the direct effects of yield was potash fertilizer> organic fertilizer> nitrogen fertilizer> total fertilizer> phosphate fertilizer.