黑垆土肥料长期定位施肥对春玉米光合特性和产量的影响
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(平凉市农业科学院,甘肃 平凉 744000)

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李利利(1983-),副研究员,硕士,从事土壤培肥研究。E-mail:94793242@qq.com。同时为通讯作者。

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基金项目:平凉市重点研发计划项目(PL-STK-2023A-025);平凉市科技成果转化计划项目(PL-STK-2023B-074);平凉市农科院院列科技创新项目(2023PASS01,2024PASS07)。


Effects of long-term fertilization on photosynthetic property and yield of spring maize (Zea may L.)
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(Pingliang Academy of Agricultural Sciences,Pingliang Gansu 744000)

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    摘要:

    合理平衡的科学施肥对春玉米的生长发育和光合性能有重要的意义。依托1978年设在陇东旱塬区黑垆土的肥料长期定位试验,设置不施肥(CK)、单施氮肥(N)、氮磷肥配施(NP)、秸秆还田配施氮磷肥(SNP)、有机肥(M)、有机配施氮磷肥(MNP)6个处理,研究了不同施肥处理对春玉米生长发育主要指标、光合性能和产量的影响。结果表明,从苗期至蜡熟期,M、MNP、NP、SNP处理玉米生育进程比CK、N提前3~14 d,见展叶多1~4叶,之后生育进程延缓4~14 d;MNP、M、SNP和NP处理较CK、N能显著提高拔节期至成熟期叶面积、叶面积指数、光合势、功能叶叶绿素含量,MNP和M处理提高玉米光合性能最显著。除N处理外,各施肥处理均显著增加玉米籽粒产量、群体生物产量,MNP、M、SNP、NP处理较CK平均籽粒产量分别增加224.9%、183.7%、170.8%、150.0%,地上部生物产量较CK依次增加181.1%、190.3%、147.0%、136.8%,地下部生物产量较CK依次增加151.8%、164.3%、104.3%、91.0%。综合因素来看,单施氮肥因玉米后期早衰导致光合性能弱、产量低,与长期不施肥产量相当;而有机肥单施和有机肥配施氮磷肥促进玉米光合性指标和产量提高,是适宜陇东旱塬区的施肥方式。要维持玉米产量的可持续提高,有机肥化肥配施更加适宜。

    Abstract:

    The balanced scientifically fertilization is significant to the growth,development,and photosynthetic performance of spring maize. A long-term fertilization field experiment was conducted at arid Loess Plateau region of Longdong in 1978 with six treatments,including no fertilization(CK),nitrogen fertilization alone(N),nitrogen and phosphorus fertilization(NP),straw returning combined with nitrogen and phosphorus fertilization(SNP),organic fertilizer(M),and organic fertilizer combined with nitrogen and phosphorus fertilization(MNP). The study examined the effects of different fertilization treatments on the main growth and development indicators,photosynthetic performance,and yield of spring maize. The results showed that from the seedling stage to the wax maturity stage,the M,MNP,NP,and SNP treatments accelerated the maize growth process by 3-14 d compared to the CK and N treatments,with 1-4 leaves unfolded during the leaf expansion period. Afterward,the growth process was delayed by 4-14 d. The MNP,M,SNP,and NP treatments significantly improved leaf area,leaf area index,photosynthetic potential,and chlorophyll content in functional leaves from the jointing stage to maturity,compared to the CK and N treatments. Among them,MNP and M treatments showed the most significant improvement in maize photosynthetic performance. Except for the N treatment,all fertilization treatments significantly increased maize grain yield and the total biomass of the population. Compared to the CK treatment,the average grain yield increased by 224.9%,183.7%,170.8%,150.0% for the MNP,M,SNP,and NP treatments,respectively. The aboveground biomass increased by 181.1%,190.3%,147.0%,and 136.8%,respectively,while the underground biomass increased by 151.8%,164.3%,104.3%,and 91.0% for the same treatments. From a comprehensive perspective,applying only nitrogen fertilizer could lead to premature senescence of maize in the later growth stages,resulting in weaker photosynthetic performance and lower yield. The yield was comparable to no fertilization treatment. The application of organic fertilizer and organic fertilizer combined with nitrogen and phosphorus fertilizer could promote the improvement of photosynthetic performance and yield of spring maize. These fertilization strategies were suitable for the farming practices in the arid and semi-arid regions of the Longdong Plateau.

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李利利,王永栋,杨学珍.黑垆土肥料长期定位施肥对春玉米光合特性和产量的影响[J].中国土壤与肥料123,2025,(10):137-145

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  • 收稿日期:2025-01-17
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  • 录用日期:2025-03-23
  • 在线发布日期: 2025-12-15
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