天津农学院学报 ›› 2026, Vol. 33 ›› Issue (2): 1-5.doi: 10.19640/j.cnki.jtau.2026.02.001

• •    下一篇

播期和种植密度对甜高粱新组合农艺性状及产量的影响

管政, 伍文文, 孙守钧, 高建明, 罗峰通信作者, 裴忠有通信作者   

  1. 天津农学院 农学与资源环境学院,天津市主要农作物智能育种重点实验室,天津 300392
  • 收稿日期:2024-08-05 出版日期:2026-04-30 发布日期:2026-05-06
  • 通讯作者: 裴忠有(1967—),男,研究员,博士,研究方向:作物分子育种。E-mail:zhongyoupei@tjau.edu.cn; 罗峰(1980—),男,副研究员,硕士,研究方向:作物育种及农作物秸秆利用研究。E-mail:luofeng1868@126.com。
  • 作者简介:管政(2001—),男,硕士在读,研究方向:作物遗传育种。E-mail:guanz2001@163.com。
  • 基金资助:
    天津市优秀科技特派员项目(23ZYCGSN00150)

Effect of sowing date and density on agronomic traits and yield of sweet sorghum hybrids

Guan Zheng, Wu Wenwen, Sun Shoujun, Gao Jianming, Luo FengCorresponding Author, Pei ZhongyouCorresponding Author   

  1. Key Laboratory of Crop Genetics and Breeding, College of Agronomy and Resource Environment, Tianjin Agricultural University, Tianjin 300392, China
  • Received:2024-08-05 Online:2026-04-30 Published:2026-05-06

摘要: 为明确甜高粱新组合的适宜播期和种植密度,以‘甜杂2号’为对照,选用7个甜高粱新组合(44A/GW3968、44A/GW3998、29A/GW3968、7A/丽欧、34A/丽欧、44A/丽欧和34A/GW3968)为试验材料,于2019年在天津市静海良种场开展裂区区组试验。试验设3个播期(4月30日、5月14日、5月30日)与3个种植密度(7.50万、8.25万、9.00万株/hm²)处理,重复3次,分析不同处理对农艺性状及产量的影响。结果表明,播期推迟显著降低了甜高粱株高、茎粗、穗长、穗质量以及生物产量、籽粒产量和糖产量,各新组合最适播期均为4月30日。种植密度增加显著抑制了株高与茎粗,但对穗长、穗质量及产量性状无显著影响;不同组合达到最大生物产量的最适种植密度存在差异,44A/GW3968和34A/丽欧的适宜种植密度为9万株/hm2;44A/GW3998、29A/GW3968、34A/GW3968、44A/丽欧和‘甜杂2号’的适宜种植密度为7.5万株/hm2;7A/丽欧的适宜种植密度为8.25万株/hm2。本研究明确了各甜高粱组合在华北地区的适宜播期与种植密度配置,为其品种推广与栽培优化提供了科学依据。

关键词: 甜高粱, 农艺性状, 产量, 播期, 密度

Abstract: In order to determine the suitable sowing date and density of new sweet sorghum combinations, seven new sweet sorghum combinations(44A/GW3968, 44A/GW3998, 29A/GW3968, 7A/Lio, 34A/Lio, 44A/Lio, 34A/GW3968)were used as experimental materials by contrast with ‘Tianza2’, and three sowing dates were set by split plot experiment. The results showed that the agronomic characters and yield of sweet sorghum were significantly affected by sowing date, and the agronomic characters and yield of sweet sorghum decreased significantly with sowing date delayed, but the biological yield of new combinations was lower than that of ‘Tianza2’ in the first sowing date, and the optimum sowing date of different new combinations was April 30. With the increase of planting density, the plant height and stem diameter of sweet sorghum decreased significantly, but there was no significant difference in ear length, ear weight and yield among the treatments. However, the optimum density of different new combinations to achieve the maximum biological yield was different, and the optimum density of 44A/GW3968 and 34A/Lio was 90 000 plants/hm2. The suitable density of 44A/GW3998, 29A/GW3968, 34A/GW3968, 44A/Lio and ‘Tianza2’ is 75 000 plants/hm2; The suitable density of 7A/Lio is 82 500 plants/hm2. This study clarifies the suitable sowing dates and planting density configurations for various new sweet sorghum combinations in North China, providing a reference for variety promotion and cultivation optimization.

Key words: sweet sorghum, agronomic traits, yield, sowing period, density

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