| 漂浮育苗方式下烟草根茬腐解液对幼苗生长的化感效应 |
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| 引用本文： | 汪林,周冀衡,邓小刚,陈洁宇,牛莉娜,毛振平,陈浩,江子勤,柳均.漂浮育苗方式下烟草根茬腐解液对幼苗生长的化感效应[J].安徽农业科学,2011,39(15):8906-8907. |
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| 作者姓名： | 汪林 周冀衡 邓小刚 陈洁宇 牛莉娜 毛振平 陈浩 江子勤 柳均 |
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| 作者单位： | 湖南农业大学烟草科学与健康重点实验室,生物科学技术学院,湖南长沙,410128;云南烟草公司玉溪市公司,云南玉溪,653101 |
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| 基金项目： | 云南省烟草专卖局资助项目-烤烟漂浮育苗技术的研究推广(09A02) |
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| 摘 要： | 目的]揭示烟草连作障碍的作用机制,为消除农业生产上烟草的连作障碍提供理论依据。方法]以漂浮育苗的方式,研究了不同浓度烟草根茬腐解液对幼苗生长的影响。结果]当烟草根茬腐解液浓度为0.1 g/ml时,能促进幼苗的生长,能显著提高烟株的干物质重量,增强硝酸还原酶活性和根系活力。随着腐解液浓度的提高,促进作用逐渐转为抑制作用。当烟草根茬腐解液浓度达0.2 g/ml时,烟株硝酸还原酶活性明显下降,过氧化物酶活性和丙二醛含量显著上升。当烟草根茬腐解液浓度达0.3 g/ml以上时,烟株硝酸还原酶活性最低,过氧化物酶活性和丙二醛含量达最大。结论]烟草根茬腐解液对烟苗的生长产生了不同程度的化感效应,随腐解液浓度的提高表现出明显的＂低促高抑＂的现象。
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| 关 键 词： | 烟草 漂浮育苗 根茬腐解液 化感效应 |
Allelopathy of Tobacco Roots' Decayed Liquids on the Seedlings' Growth in the Floating-seeding System |
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| WANG Lin et al.Allelopathy of Tobacco Roots' Decayed Liquids on the Seedlings' Growth in the Floating-seeding System[J].Journal of Anhui Agricultural Sciences,2011,39(15):8906-8907. |
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| Authors: | WANG Lin |
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| Institution: | WANG Lin et al(Key Laboratory of Tobacco Science and Health,School of Life Science and Technology,Hunan Agricultural University,Changsha,Hunan 410128) |
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| Abstract: | Objective] The research aimed to reveal the mechanism system of continuous cropping obstacle of tobacco and provide theoretical basis for eliminating the continuous cropping obstacle of tobacco in the agricultural production.Method] By the method of floating-seeding system,the effects of tobacco roots' decayed liquids on the seedling growth were studied.Result] When the concentration of tobacco roots' decayed liquids was 0.1 g/ml,it increased the seedling growth and dry matter weight of tobacco apparentl... |
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| Keywords: | Tobacco Floating-seeding system Decomposed liquids from roots Allelopathy |
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