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中国农学通报 ›› 2014, Vol. 30 ›› Issue (4): 270-274.doi: 10.11924/j.issn.1000-6850.2013-0846

• 植物保护 农药 • 上一篇    下一篇

不同秸杆水提液在不同光照强度下对马唐萌发与生长的影响

杨彩宏 冯莉 田兴山 张泰劼 高家东 岳茂峰 崔烨   

  • 收稿日期:2013-03-26 修回日期:2013-05-23 出版日期:2014-02-05 发布日期:2014-02-05
  • 基金资助:
    国家科技支撑计划 “农林重要杂草鼠害监控技术研发” (2012BAD19B02)。

The Effects of Water Extracts from Different Straws on Seed Germination and Growth of Crabgrass (Digitaria sanguinalis) Under Different Light Intensities

  • Received:2013-03-26 Revised:2013-05-23 Online:2014-02-05 Published:2014-02-05

摘要: 为了明确不同秸秆水提液在不同光照强度下对马唐种子萌发与生长的影响。本研究采用室内种子培养皿法测定了水稻、甜玉米、香蕉假茎以及甘蔗秸秆水浸提液在3种光照强度下对马唐种子发芽率、胚根、胚芽生长的影响。结果显示,(1)与800 lx、4000 lx光照强度下对照马唐种子的萌发率相比(> 90%),完全黑暗条件能够抑制对照马唐种子的萌发,但萌发率仍>70%;(2)3种光照强度下,与对照相比,不同秸秆水提液均对马唐种子发芽率有抑制作用,水提液浓度越高,发芽率越低,且完全黑暗条件下抑制作用更显著,而对胚芽和胚根生长影响不大;(3)4种秸秆水提液在3种光照强度下对马唐种子发芽率的抑制作用顺序均为稻秆>甘蔗>香蕉假茎>甜玉米。

关键词: 分析, 分析

Abstract: The objective of this study was to investigate the effects of water extracts from 4 different straws on germination and growth of crabgrass (Digitaria sanguinalis) under different light intensities. 4 different straws of rice, sweet corn, banana and sugarcane were collected from farmland and orchard after fruit were harvested. The effects of water extract from different straws on germination, radicle and germ of crabgrass were assessed by seed petri dish bioassay under different light intensities (0-totally darkness, 800 lx and 4000 lx). The result showed that firstly, totally darkness, in contrast with the 800 lx and 4000 lx light intensities, could reduce the germination of crabgrass seed a bit, but still its germination rate was up to 70% and more. Secondly, totally darkness was the most significant one that inhibited the germination of crabgrass among 3 light intensities, and the higher water extracts concentration, the lower seed germination. However, the effects of water extracts on radicle and germ were not obvious. Thirdly, the inhibiting order of the four water extracts to the germination of crabgrass was rice > sugarcane > banana > sweet corn.