草地学报

草地学报 ›› 2020, Vol. 28 ›› Issue (1): 259-267.DOI: 10.11733/j.issn.1007-0435.2020.01.031

• 技术研发 • 上一篇    下一篇

科尔沁沙地苜蓿苗期除草剂的筛选

荆照1, 曹倩1, 宁亚明1, 常媛飞1, 张玉霞2, 周岩3, 达布希拉图4, 王显国1   

  1. 1. 中国农业大学草业科学与技术学院, 北京 100193;
    2. 内蒙古民族大学农学院, 内蒙古 通辽 028000;
    3. 内蒙古岩峰农业生物科技有限公司, 内蒙古 赤峰 024000;
    4. 阿鲁科尔沁旗达布希绿业有限责任公司, 内蒙古 赤峰 025550
  • 收稿日期:2019-05-17 修回日期:2019-08-29 出版日期:2020-02-15 发布日期:2020-01-18
  • 通讯作者: 王显国
  • 作者简介:荆照(1995-),男,山西运城人,硕士研究生,主要从事牧草生产研究,E-mail:987568283@qq.com
  • 基金资助:
    国家公益性行业（农业）科研专项（201403048-2）资助

Herbicide Selection of Alfalfa Seedling Stage in Horqin Sandy Land

JING Zhao1, CAO Qian1, NING Ya-ming1, CHANG Yuan-fei1, ZHANG Yu-xia2, ZHOU Yan3, DA-BU-XI-LA-TU4, WANG Xian-guo1   

  1. 1. College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China;
    2. College of Agronomy, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028000, China;
    3. Inner Mongolia Yanfeng Agricultural Biotechnology Co., Ltd., Chifeng, Inner Mongolia 024000, China;
    4. Ar Horqin Banner DBXLY Co., Ltd., Chifeng, Inner Mongolia 025550, China
  • Received:2019-05-17 Revised:2019-08-29 Online:2020-02-15 Published:2020-01-18

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摘要： 本研究通过在紫花苜蓿（Medicagosativa L.）四个不同叶期施用除草剂，来探索不同除草剂对苜蓿产量和杂草防控效果的影响。结果表明：高效氟吡甲禾灵可以分别和咪唑乙烟酸、苯达松、辛酰溴苯腈安全混用，且不会显著降低对燕麦（Avena sativa L.）的防效；咪唑乙烟酸对反枝苋（Amaranthus retroflexus L.）的鲜重防效较好，为30%~90%。不同除草剂适宜施用时期不同，咪唑乙烟酸适宜在3叶期施用，苜蓿的产量高达1 666 kg·hm-2；辛酰溴苯腈与高效氟吡甲禾灵在5叶期混用，苜蓿的产量高达1 656 kg·hm-2。科尔沁沙地苜蓿苗期适宜化学除草方法为：针对禾本科与阔叶杂草并存地块，应在苜蓿3叶期，施用咪唑乙烟酸1 050 mL·hm-2+高效氟吡甲禾灵600 mL·hm-2；针对禾本科杂草为主的地块，应在苜蓿3~5叶期，单独施用高效氟吡甲禾灵600 mL·hm-2。

关键词: 苜蓿, 苗期, 除草剂, 产量, 防效

Abstract: The effects of different herbicides on alfalfa (Medicago sativa L.) yield and weed control were explored by applying herbicides at four different leaf stages. The results showed that haloxyfop-P-methyl could be safely mixed with imazethapyr,bentazone or bromoxynil octanoate without affecting the control effect on oat (Avena sativa L.);the control effect of imazethapyr against redroot pigweed (Amaranthus retroflexus L.) fresh weight was 30%~90%. The efficiency of herbicides depends on application time. Alfalfa yield was as high as 1666 kg·hm-2,when Imazethapyr was applied at three-leaf growth stage;When bromoxynil octanoate was mixed with haloxyfop-P-methyl at five-leaf stage,and the alfalfa yield was as high as 1 656 kg·hm-2. During the three to five-leaf stage,1 050 mL·hm-2 imazethapyr + l 600 mL·hm-2 haloxyfop-P-methy,or application of 600 mL·hm-2 haloxyfop-P-methyl alone is recommended.

Key words: alfalfa, seedling stage, herbicide, yield, control effect

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