GAO Pan,WANG Yu-xian,XU Ying-ying,et al.Effects of Inter-Annual Variability of Meteorological Factors on Maize Yield Under Straw Mulching[J].HEILONGJIANG AGRICULTURAL SCIENCES,2022,(11):5-10.[doi:10.11942/j.issn1002-2767.2022.11.0005]
年际间气象因子变化对秸秆覆盖还田下玉米产量的影响
- Title:
- Effects of Inter-Annual Variability of Meteorological Factors on Maize Yield Under Straw Mulching
- Keywords:
- straw mulch returning to the field; meteorological factors; inter-annual variability; maize yield
- 文献标志码:
- A
- 摘要:
- 为了应对气候变化和提高玉米产量,以2016-2021年来秸秆覆盖还田下玉米产量和气象因子数据进行分析,探讨影响玉米产量主要气象因素的作用效果。结果表明,(1)2016-2021年嫩单19年际间成熟期干物质量差异达到显著水平。其中2018年玉米干物质量最高,2016年最低,成熟期玉米干物质量在2018年为372.39 g,2016、2017、2019、2020和2021年分别比2018年减少23.11%、21.76%、10.59%、7.26%和602%。2016-2022间年产量以2018年最高,为10 088 kg·hm-2,2016、2017、2019、2020和2021年分别比2018年减少17.60%、14.40%、2.98%、2.44%和5.83%。(2)除2021年之外,产量的高低与干物质积累量的高低基本一致。而该地区玉米产量的高低变化与平均温度和日照时数关系并不密切。(3)玉米水分利用效率与年降水量表现为抛物线型关系。水分利用效率随着年降水量的增加先增后降,存在临界值。产量与水分利用效率的相关性分析表明,该地区玉米产量的高低变化与水分利用效率有一定关系,但并不密切。
- Abstract:
- In order to cope with climate change and improve maize yield, the data of maize yield and meteorological factors under straw mulching and returning from 2016 to 2021 were analyzed to discuss the effect of main meteorological factors affecting maize yield. The results showed that:(1) From 2016 to 2021, there was a significant difference in dry matter quality during the 19 years of maturity. Among them, the dry matter quality of corn was the highest in 2018 and the lowest in 2016. The dry matter quality of mature corn was 372.39 g in 2018, and decreased by 23.11%, 21.76%, 10.59%,7.26% and 6.02% respectively in 2016, 2017, 2019, 2020 and 2021 compared with 2018. The output results from 2016 to 2022 showed that the output in 2018 was the highest, which was 10 088 kg·ha-1. Compared with 2018, the output in 2016, 2017, 2019, 2020 and 2021 decreased by 17.60%, 14.40%, 2.98%, 2.44% and 5.83% respectively. (2) This study showed that the output was basically consistent with the dry matter accumulation except 2021. However, the variation of maize yield in this area was not closely related to the average temperature and sunshine hours. (3) The relationship between water use efficiency of maize and annual precipitation was a parabola. The water use efficiency first increased and then decreased with the increase of annual precipitation, and there was a critical value. The correlation analysis between yield and water use efficiency showed that the changes of maize yield in this region are related to water use efficiency, but not closely.
参考文献/References:
[1]董智,解宏图,张立军,等.东北玉米带秸秆覆盖免耕对土壤性状的影响[J].玉米科学,2013,21(5):100-108.
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备注/Memo
收稿日期:2022-08-13