研究解释经济增长规律和影响制约因素的理论。

Studies to explain the laws of economic growth and impact of constraints theory.

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SRS遵从特殊的增长规律，并不具有“阈值”特性。

SRS comply with the special growth law, does not have "threshold" characteristics.

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干物质积累呈“S”型曲线，符合“慢-快-慢”的增长规律。

Dry matter accumulation showed a s curve at a slow-fast-slow rate.

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