结果表明，地下部储存的养分占总积累的比重较大。同时叶部养分向树体转移能力较强。

The results show that larger proportion of nutrient is stored in root and more nutrients can transfer from leaf to stem.

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超高产夏玉米吐丝后氮素吸收积累量占总积累量的40.30%-47.78%，保证后期氮素养分充足供应对于夏玉米达到超高产水平至关重要；

The N absorption proportion after silking stage was 40.30%-47.78% of the total, so it was important to provide maize plants with sufficient N in later growth stage for realizing super-high-yield.

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弱势粒直链淀粉、支链淀粉、总淀粉积累速率均在花后20～25天达到峰值。

The accumulation rate of amylose amylopectin total starch in weak grains all reached peaks on20-25th daa .

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