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草业学报 ›› 2025, Vol. 34 ›› Issue (9): 97-110.DOI: 10.11686/cyxb2024374

• 研究论文 • 上一篇    下一篇

耐瘠高产型玉米品种主要农艺性状特征分析

李长青1,2(), 宋亚茹1, 肖凡1, 缪春语1, 孙梦宇1, 纪萌1, 孙志梅1()   

  1. 1.河北农业大学资源与环境科学学院,河北 保定 071000
    2.河北省农田生态环境重点实验室,河北 保定 071000
  • 收稿日期:2024-09-26 修回日期:2024-10-31 出版日期:2025-09-20 发布日期:2025-07-02
  • 通讯作者: 孙志梅
  • 作者简介:E-mail: sunzhimei@hebau.edu.cn
    李长青(1996-),男,河北承德人,在读博士。E-mail: lixiaoqing19960815@163.com
  • 基金资助:
    国家重点研发计划(2021YFD1901004)

Analysis of main agronomic traits of low-fertility-tolerant and high-yielding maize varieties

Chang-qing LI1,2(), Ya-ru SONG1, Fan XIAO1, Chun-yu MIAO1, Meng-yu SUN1, Meng JI1, Zhi-mei SUN1()   

  1. 1.College of Resources and Environmental Sciences,Hebei Agricultural University,Baoding 071000,China
    2.Key Laboratory of Farmland Ecology and Environment of Hebei Province,Baoding 071000,China
  • Received:2024-09-26 Revised:2024-10-31 Online:2025-09-20 Published:2025-07-02
  • Contact: Zhi-mei SUN

摘要:

在氮磷复合限制型障碍土壤上,通过田间小区试验,对施肥和不施肥下10个供试玉米品种的株型特征、穗部特征及产量进行比较分析,探明不同玉米品种的耐瘠能力差异,并解析耐瘠高产型玉米品种的主要农艺性状特征,为适宜于瘠薄障碍型中低产田土壤的耐瘠高产玉米品种的选育提供科学依据。根据施肥和不施肥条件下的玉米平均产量将10个供试玉米品种分为耐瘠高产型(HB)、不耐瘠高产型(HNB)和不耐瘠次高产型(SHNB)3类,其中HB型品种的施肥增产效应明显低于HNB和SHNB型玉米品种。在瘠薄土壤不施肥条件下,HB型玉米的株高、穗位高、穗长、行粒数和穗粒数均显著高于HNB和SHNB型品种,而秃尖长显著降低,各农艺性状耦合协调度显著提高。而在施肥条件下,虽然上述农艺性状与HNB型没有显著差异,但均显著高于SHNB型品种。通过各农艺性状指标与产量的边界线分析得出,在瘠薄土壤上获得12000 kg·hm-2的目标产量,HB型玉米的农艺性状需要达到的适宜范围分别为:穗长17.80~20.42 cm,秃尖长<0.05 cm,行粒数34.32~40.36,穗粒数578.95~691.55,百粒重34.31~39.70 g,株高229.43~256.98 cm,穗位高103.38~125.52 cm。综上,在氮磷含量均低的瘠薄型中低产田上,HB型玉米通过保持较长的穗长和较短的秃尖长来实现行粒数和穗粒数的显著提高,各农艺性状的耦合协调度也明显提高,最终表现出了在瘠薄土壤上明显的产量优势。

关键词: 玉米品种, 耐瘠高产, 农艺性状, 耦合协调度, 边界线分析

Abstract:

In this study, field experiments were conducted in nitrogen and phosphorus co-limited soil treated with and without fertilizer application to analyze the differences in plant traits, ear traits, and yield of ten maize (Zea mays) varieties. The aims were to explore the differences in low-fertility tolerance among maize varieties, and identify the main agronomic traits of low-fertility-tolerant and high-yielding maize varieties, thereby providing a scientific basis for selecting and breeding maize varieties that are suitable for low-to-medium-yielding fields with nutrient deficiencies. Based on the average yields under these conditions, the ten maize varieties were classified into three types: low-fertility-tolerant and high-yielding type (HB), low-fertility-intolerant and high-yielding type (HNB), and low-fertility-intolerant and medium-yielding type (SHNB). The yield increase from fertilization of the HB-type was significantly lower than that of HNB and SHNB types. Without fertilizer in low-fertility soil, the HB-type exhibited significantly greater plant height, ear height, ear length, kernels per row, and kernels per ear, compared to HNB and SHNB types, while the bald tip length was significantly shorter, and the coupling coordination degree of agronomic traits was significantly higher. Under fertilization, although the above agronomic traits of the HB-type did not differ significantly from those of the HNB-type, they were significantly higher than those of the SHNB-type. Boundary line analysis of agronomic traits and yields revealed that, to achieve a target yield of 12000 kg·ha-1 in low-fertility soil, the suitable ranges for agronomic traits of the HB-type were: ear length 17.80-20.42 cm; bald tip length <0.05 cm; kernels per row 34.32-40.36; kernels per ear 578.95-691.55; 100-grain weight 34.31-39.70 g; plant height 229.43-256.98 cm; and ear height 103.38-125.52 cm. In conclusion, in low-to-medium-yielding fields with nitrogen and phosphorus co-limitation, the HB-type maize varieties achieved a significantly higher kernels per row and kernels per ear by maintaining a longer ear length and shorter bald tip length. The coupling coordination degree of agronomic traits was also significantly higher, ultimately demonstrating an obvious yield advantage in low-fertility soil.

Key words: maize varieties, low-fertility-tolerance and high-yield, agronomic traits, coupling coordination degree, boundary line analysis