Effects of Straw and Fertilizer Managements on Nitrogen Loss in Rice Cultivation in Taihu Lake Basin

被引：0
|
作者：
Yu Y.-L. [1 ]
Qian C. [1 ]
Yang B. [1 ]
Yang L.-Z. [1 ]
He S.-Y. [1 ]
Xue L.-H. [1 ]
机构：
[1] Key Laboratory of Agro-Environment in Downstream of Yangze Plain, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing
来源：
Huanjing Kexue/Environmental Science | 2024年 / 45卷 / 07期
关键词：
fertilizer; lateral seepage; leaching; nitrogen loss; rice; runoff; straw;
D O I：
10.13227/j.hjkx.202308074
中图分类号：
学科分类号：
摘要：
Nitrogen loss from rice systems is an important source of agricultural non-point source pollution. Many studies revolve around reducing the rate of nitrogen fertilizer application. However，studies examining the characteristics of nitrogen loss in multiple loss paths（runoff，leaching，and lateral seepage）under different straw and fertilizer managements are lacking. Therefore，a study was carried out based on a rice field planted for more than 20 years with straw continuously returned to the field for more than 5 years in Taihu lake basin. The effects of straw and fertilizer managements on nitrogen loss in different paths during the whole growth period of rice were studied. Moreover，straw and fertilizer managements were evaluated by their production suitability and environmental friendliness based on crop yield，nitrogen use efficiency，and nitrogen loss. The results showed that straw removal from the field increased the response sensitivity of nitrogen accumulation in plant tissue to nitrogen application. The nitrogen loss in the rice season was 9-17 kg·hm-2，accounting for 5%-7% of the nitrogen application rate. Straw removal increased the risk of nitrogen loss when soaking water discharged. Straw returning could decrease the nitrogen loss by more than 15%，though the effect of straw on nitrogen loss via lateral seepage was not clear. Furthermore，the suitable substitution of organic fertilizer（30% in this study）could respectively reduce the amount of nitrogen loss via runoff，leaching，and lateral seepage by 16%，26%，and 37% compared with the fertilizer application under the same nitrogen gradient. In conclusion，the implementation of straw returning and fertilizer type optimization measures effectively reduced the nitrogen loss for unit weight of rice production and realized the balance between agricultural production and environmental protection. © 2024 Science Press. All rights reserved.
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页码：4023 / 4031
页数：8
相关论文
共 44 条
  • [1] 48, 18, pp. 8-10, (2020)
  • [2] Ju X T., Direct pathway of nitrate produced from surplus nitrogen inputs to the hydrosphere［J］, Proceedings of the National Academy of Sciences of the United States of America, 111, 4, (2014)
  • [3] Gu B J，, Zhang X M，, Lam S K，, Et al., Cost-effective mitigation of nitrogen pollution from global croplands［J］, Nature, 613, 7942, pp. 77-84, (2023)
  • [4] Xue L H, Yang L Z., Maintaining yields and reducing nitrogen loss in rice-wheat rotation system in Taihu Lake region with proper fertilizer management［J］, Environmental Research Letters, 9, 11, (2014)
  • [5] Yu Y L, Wang Y Z, Yang B，, Et al., Effects of fertilizer application strategy adjustments on nitrogen and phosphorus loss from typical crop systems in Taihu Lake region［J］, Environmental Science, 44, 7, pp. 3902-3912, (2023)
  • [6] Xi Y G，, Tian W, Li Y，, Et al., Nitrogen and phosphorus runoff losses and loss coefficients in rice-wheat rotation system in Taihu Lake basin［J］, Jiangsu Journal of Agricultural Sciences, 30, 3, pp. 534-540, (2014)
  • [7] Wang H，, Xi Y G, Chen R B，, Et al., Investigation on excessive application of fertilizer and pesticide in Taihu Lake area［J］, Journal of Agricultural Resources and Environment, 26, 3, pp. 10-15, (2009)
  • [8] Xia L L, Yan X Y., How to feed the world while reducing nitrogen pollution［J］, Nature, 613, 7942, pp. 34-35, (2023)
  • [9] Cao Y S，, Sun H F，, Liu Y Q，, Et al., Reducing N losses through surface runoff from rice-wheat rotation by improving fertilizer management［J］, Environmental Science and Pollution Research, 24, 5, pp. 4841-4850, (2017)
  • [10] Liu Y D, Li G H，, Et al., Lower dose of controlled/slow release fertilizer with higher rice yield and N utilization in paddies：evidence from a meta-analysis［J］, Field Crops Research, (2023)
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