Xinjiang Agricultural Sciences ›› 2024, Vol. 61 ›› Issue (7): 1582-1589.DOI: 10.6048/j.issn.1001-4330.2024.07.003

• Crop Genetics and Breeding·Germplasm Resources·Molecular Genetics·Cultivation Physiology·Physiology and Biochemistry • Previous Articles     Next Articles

Effects of nitrogen fertilizer reduction and biochar application on population structure, photosynthetic characteristics and yield of spring wheat

YANG Mei1(), ZHAO Hongmei2, Dilireba Xiamixiding1, YANG Weijun1(), ZHANG Jinshan1, HUI Chao1   

  1. 1. Xinjiang Engineering Technology Research Center of High-Quality Special Triticeae Crops, College of Agriculture, Xinjiang Agricultural University, Urumqi 830052,China
    2. College of Resources and Environment, Xinjiang Agricultural University, Urumqi 830052, China
  • Received:2023-12-25 Online:2024-07-20 Published:2024-09-04
  • Correspondence author: YANG Weijun
  • Supported by:
    National Natural Science Foundation Project(32260326);Modern Agricultural Industry (Wheat) System Project of Xinjiang Uygur Autonomous Region;Xinjiang Agricultural University Undergraduate Innovation Project(dxscx2023009)

氮肥减量配施生物质炭对春小麦群体结构、光合特性及产量的影响

杨梅1(), 赵红梅2, 迪丽热巴·夏米西丁1, 杨卫君1(), 张金汕1, 惠超1   

  1. 1.新疆农业大学农学院/新疆优质专用麦类作物工程技术研究中心,乌鲁木齐 830052
    2.新疆农业大学资源与环境学院,乌鲁木齐 830052
  • 通讯作者: 杨卫君
  • 作者简介:杨梅(1995-),女,甘肃人,硕士研究生,研究方向为农田生态,(E-mail)3087690043@qq.com
  • 基金资助:
    国家自然科学基金项目(32260326);新疆维吾尔自治区现代农业产业(小麦)体系项目;新疆农业大学大学生创新项目(dxscx2023009)

Abstract:

【Objective】This study further carried out the research on the impact of biochar single application and combined application of nitrogen fertilizer on the population structure, photosynthetic characteristics and yield of spring wheat in irrigation areas, aiming to provide scientific basis for the rational use of biochar and fertilizer. 【Methods】The experiment adopted a randomized block design, set up 2 nitrogen fertilizer application levels (0, 150 kg/hm2) and 4 levels of biomass charcoal (0, 10, 20, 30 t/hm2) for research. After that, the population structure, photosynthetic characteristics and yield of Xinchun 46 wheat were analyzed in 2020. 【Results】The results showed that under B2N1 treatment, nitrogen fertilizer reduction (150 kg/hm2), compared to medium biomass charcoal (20 t/hm2) under the combined application, the population structure, leaf area index, leaf SPAD value, net photosynthetic rate, and yield of spring wheat all reached the optimal level, increased by 15.04% to 32.98%, 3.67% to 89.82%, 5.63% to 11.46%, 17.95% to 81.68%, and 29.73% compared to the control, respectively. Compared with the control, the single application of biochar and the combination of biochar and nitrogen fertilizer increased spring wheat yield by 7.52% to 29.73%. 【Conclusion】Nitrogen fertilizer is reduced by 150 kg/hm2 and applied in combination with 20 t/hm2(B2N1) biochar has the best effect in increasing production.

Key words: biochar; nitrogen fertilizer; spring wheat; group structure; yield

摘要:

【目的】研究生物质炭单施和与氮肥配施对灌区春小麦群体结构、光合特性及产量的影响,为生物质炭及化肥的合理利用提供科学依据。【方法】试验采用随机区组设计,设2个氮肥施用水平(0、150 kg/hm2),4个生物质炭水平(0、10、20和30 t/hm2),于2020年对新春46号的群体结构、光合特性及产量进行分析。【结果】在B2N1处理,即氮肥减量(150 kg/hm2)与中量生物质炭(20 t/hm2)配施下,春小麦群体结构、叶面积指数、叶片SPAD值、净光合速率及产量均达到最佳,较对照分别提高了15.04%~32.98%、3.67%~89.82%、5.63%~11.46%、17.95%~81.68%和29.73%。与对照相比,单施生物质炭及生物质炭与氮肥配施均提高了春小麦产量,增产幅度为7.52%~29.73%。【结论】氮肥减量150 kg/hm2配施20 t/hm2生物质炭(B2N1)其增产效果最佳。

关键词: 生物质炭, 氮肥, 春小麦, 群体结构, 产量

CLC Number: