不同水分处理下旱稻在不同生育阶段的耗水量和耗水强度大部分都集中在播种至出苗和孕穗至抽穗阶段。

The amount and the intensity of water consumption were mostly in the stage between from sowing to emergence and from booting to heading.

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但无效分蘖期根系生长量占抽穗期根系累积量的比例平均值皆在50%以上，是影响抽穗期根系累积量的主要生育阶段。

Noneffective tillering period, which contributed more than 50% root growth quantity to the accumulated root growth at heading, was the main period influencing root growth accumulation.

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