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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Can knowledge in seed ecology contribute to improved weed management in direct-seeded rice?
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Can knowledge in seed ecology contribute to improved weed management in direct-seeded rice?

机译：种子生态学知识能否有助于改善直播稻的杂草管理？

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摘要

Direct-seeded rice is an emerging production technology in Asia due to labour and water scarcity. However, weeds are an important biotic constraint in the production of direct-seeded rice. Manual weeding is becoming less common and herbicides are replacing manual weeding to manage weeds in direct-seeded systems. However, there are concerns about the evolution of herbicide resistance in weeds and shifts in weed flora. Therefore, there is an interest among scientists to evaluate cultural weed management strategies to improve weed management in direct-seeded rice systems. Weed seed banks are the main source of weed infestation in any crop. Depleting the weed seed bank should be the main aim of cultural weed management strategies. Better understanding of the factors affecting seed germination and seedling emergence could help in the development of effective cultural weed management strategies through either suppressing germination or encouraging germination when emerged seedlings can be easily killed. Weed seed germination and emergence are influenced by light exposure, seed burial depth, use of residue as mulches and flooding of soils. However, the factors affecting weed seed germination and seedling emergence are poorly understood in Asia.
机译：由于劳动力和水的短缺，直播稻是亚洲新兴的生产技术。但是，杂草是直接播种水稻生产中的重要生物限制因素。人工除草变得不那么普遍了，除草剂正在取代人工除草来管理直接播种系统中的杂草。但是，人们担心杂草中除草剂抗性的演变以及杂草植物区系的变化。因此，科学家们有兴趣评估文化杂草管理策略，以改善直接播种水稻系统中的杂草管理。杂草种子库是任何作物中杂草侵扰的主要来源。耗尽杂草种子库应该是文化杂草管理策略的主要目标。更好地了解影响种子发芽和幼苗出苗的因素，可以通过抑制发芽或在发芽幼苗易于杀死时鼓励发芽，来帮助制定有效的文化杂草管理策略。杂草种子的发芽和出苗受光照，种子埋葬深度，残留物作为覆盖物的使用和土壤淹水的影响。然而，在亚洲，影响杂草种子发芽和幼苗出苗的因素知之甚少。

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