The main content as follows:(1) The yields of optimized N fertilization treatment and conventional N fertilization treatment were no significant differences and all achieved target yield.

研究结果如下：（1）优化施氮处理的棉花产量和传统施氮处理相比无显著性差异，且都达到了目标产量；

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The main content as follows:(1) The yields of optimized N fertilization treatment and conventional N fertilization treatment were no significant differences and all achieved target yield.

研究结果如下：（1）优化施氮处理的棉花产量和传统施氮处理相比无显著性差异，且都达到了目标产量；

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