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中国农学通报 ›› 2022, Vol. 38 ›› Issue (14): 11-17.doi: 10.11924/j.issn.1000-6850.casb2021-0479

所属专题: 生物技术 油料作物 水稻

• 农学·农业基础科学 • 上一篇    下一篇

不同浸种剂对稻草还田条件下油菜发芽出苗的影响

郭东(), 洪栎, 张梦蝶, 周可金()   

  1. 安徽农业大学,合肥 230036
  • 收稿日期:2021-05-06 修回日期:2021-08-13 出版日期:2022-05-15 发布日期:2022-06-07
  • 通讯作者: 周可金
  • 作者简介:郭东,男,1992年出生,安徽阜阳人,硕士研究生,研究方向:油菜栽培。通信地址:230036 安徽省合肥市长江西路130号 安徽农业大学农学院,E-mail: 2257498807@qq.com
  • 基金资助:
    安徽省油棉产业技术体系(AHCYJSTX-04)

Effects of Seed Soaking Reagents on Rapeseed Seedling Quality Under Rice-residue Returning to Field

GUO Dong(), HONG Yue, ZHANG Mengdie, ZHOU Kejin()   

  1. Anhui Agricultural University, Hefei 230036
  • Received:2021-05-06 Revised:2021-08-13 Online:2022-05-15 Published:2022-06-07
  • Contact: ZHOU Kejin

摘要:

为了缓解水稻秸秆还田对直播油菜的负面影响,实现水稻秸秆还田下直播油菜全苗、壮苗,本研究以‘沣油737’为试验材料,通过不同浸种剂处理,探究不同浸种剂对水稻秸秆还田下直播油菜发芽出苗的影响。结果表明,C1(40 mg/L赤霉素+200 mg/L钼酸铵+2000 mg/L磷酸二氢钾+400 mg/L的硼酸)和C2(100 μmol/L褪黑素+200 mg/L钼酸铵+2000 mg/L磷酸二氢钾+400 mg/L的硼酸)试剂浸种处理后水稻秸秆还田下直播油菜每平方出苗数分别较CK增加23.28%和3.97%;C1试剂浸种后油菜幼苗根长增加,下胚轴的伸出长度变长,C2试剂浸种后油菜幼苗的根长变长,下胚轴长度较CK有所降低;C1、C2试剂浸种后幼苗干物质积累较CK增加。C1、C2试剂浸种一定程度缓解秸秆还田对直播油菜出苗的不利影响,C2试剂浸种更有利于促进油菜根系发育,促进秸秆还田下直播油菜壮苗。

关键词: 浸种, 稻草还田, 壮苗, 直播油菜, 出苗率

Abstract:

The aims are to alleviate the negative effects of rice-residue returning to field on direct-seeding rapeseed, and achieve the full and strong seedling. ‘Fengyou 737’ was used as material, and the effects of different seed soaking reagents on the germination and seedling of direct-seeding rapeseed were studied under rice-residue returning to field. Results showed that under rice-residue returning to field, treated with C1 (40 mg/L gibberellin + 200 mg/L ammonium molybdate + 2000 mg/L potassium dihydrogen phosphate + 400 mg/L boric acid) and C2 (100 μmol/L melatonin + 200 mg/L ammonium molybdate + 2000 mg/L potassium dihydrogen phosphate + 400 mg/L boric acid), the number of seedlings per square were increased by 23.28% and 3.97% compared with that of CK. The root length and hypocotyl length of seedlings treated with C1 reagent were increased. The toot length was increased and the hypocotyl length was decreased compared with those of CK in the C2 reagent treatment. The dry matter accumulation of seedlings treated with C1 and C2 reagents were all increased compared with that of CK. We also found that C1 and C2 reagents relieved the harmful effect of rice-residue returning to field on the seedling of direct-seeding rapeseed. C2 reagent treatment was better than C1 reagent treatment by promoting the root development and strong seedling under rice-residue returning to field.

Key words: seed soaking, rice-residue returning to field, strong seedling, direct-seeding rapeseed, seedling emergence rate

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