及时露晒田，控制无效分蘖，后期严格控制氮肥的用量；

Timely exposing paddy field to sun, controlling ineffecient tillers and strictly controlling application of amount of nitrogen;

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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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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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