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牛筋草种子萌发特性的研究 被引量:11

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摘要 牛筋草种子萌发受温度影响较大,温度低于15℃,种子完全不萌发,高于25℃利于种子萌发,萌发率超过92%。对光照条件不敏感。牛筋草种子的萌发受酸碱度影响很小,在pH值4~11范围内,萌发率均高于90%。牛筋草种子对水分胁迫较敏感,当水势为-0.6MPa时,种子萌发率仅1.67%。牛筋草种子耐盐性较强,当NaCl浓度为120mmol/L时,种子萌发率仍高达80%。牛筋草种子适宜在土层深度0~1cm范围内萌发,萌发率超过87%,种子埋深增加会严重抑制其萌发。
出处 《杂草科学》 2009年第3期21-24,共4页 Weed Science
基金 国家科技支撑计划(编号:2006BAD08A09) 广东省科技项目(编号:2008B02090004) 广东省农业科学院植物保护研究所所长基金项目(编号:植-2008-4)
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