刘义国, 林琪, 王月福, 郭家选, 刘洪军. 秸秆还田与氮肥耦合对冬小麦光合特性及产量形成的影响[J]. 中国生态农业学报(中英文), 2007, 15(1): 42-44.
引用本文: 刘义国, 林琪, 王月福, 郭家选, 刘洪军. 秸秆还田与氮肥耦合对冬小麦光合特性及产量形成的影响[J]. 中国生态农业学报(中英文), 2007, 15(1): 42-44.
LIU Yi-Guo, LIN Qi, WANG Yue-Fu, GUO Jia-Xuan, LIU Hong-Jun. Effects of coupling of straw-return and nitrogen fertilizer on photosynthetic characters and yield of winter wheat[J]. Chinese Journal of Eco-Agriculture, 2007, 15(1): 42-44.
Citation: LIU Yi-Guo, LIN Qi, WANG Yue-Fu, GUO Jia-Xuan, LIU Hong-Jun. Effects of coupling of straw-return and nitrogen fertilizer on photosynthetic characters and yield of winter wheat[J]. Chinese Journal of Eco-Agriculture, 2007, 15(1): 42-44.

秸秆还田与氮肥耦合对冬小麦光合特性及产量形成的影响

Effects of coupling of straw-return and nitrogen fertilizer on photosynthetic characters and yield of winter wheat

  • 摘要: 秸秆还田下不同N肥用量的耦合试验研究表明,与单施N肥处理比较,秸秆还田能明显改善冬小麦的光合性能,提高小麦千粒重,进而提高小麦产量。秸秆还田下随施N量增加,小麦各时期光合速率和蒸腾速率显著提高,但当施N量超过225kg/hm2,反而引起光合性能降低。本试验结果表明,秸秆还田下配施N肥主要通过影响每hm2穗数影响产量,以秸秆还田配施N 25kg/hm2的处理为宜。

     

    Abstract: Effects of the coupling of straw(wheat)-return and different nitrogen amount (four levels)on photosynthetic characters and yield of wheat were studied under field condition.The results show that straw-return can improve photosynthesis of wheat,gets higher thousand-grain weight and grain yield compared to the normal(non-straw) cultivation.The rates of photosynthesis and transpiration of wheat of straw-return treatments are enhanced with the increasing of N fertilizer to a certain applied level.But they start to decrease when the nitrogen is applied more than 225kg/hm2.The coupling of straw-return and N fertilizer application can increase the wheat yield mainly through affecting the number of ears per hectare.The optimal amount of N fertilizer applied to wheat with straw-return is 225kg/hm2.

     

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