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Alleviation of salt-induced stress on seed emergence using soil additives in a greenhouse

机译：在温室中使用土壤添加剂缓解盐胁迫对种子出苗的压力

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Use of sodium chloride (NaCl) as a deicing salt results in high concentrations of ions in roadside soils, which decreases seedling emergence in these areas. Greenhouse experiments performed in soil culture tested the efficacy of three soil fertilizers, gypsum (CaSO4), potash (potassium chloride, KCl) and potassium nitrate (KNO3), in alleviating NaCl stress on seedling emergence of three grass species exhibiting a range of salt tolerance, Poa pratensis (Kentucky bluegrass), Bouteloua gracilis (blue grama), and Puccinellia distans (alkali grass). Two-factor factorial designs were utilized for each species-fertilizer combination. Treatments of 5000 mg/L (0.086 M) NaCl with or without fertilizer, in concentrations that were equal to 0.5, 1, and 2 times the molar equivalent of 5000 mg/L NaCl were applied biweekly. Salt stress on Poa pratensis emergence was alleviated by all fertilizers with CaSO4 having the greatest effect in alleviating NaCl stress and potash and potassium nitrate alleviating stress at lower treatment levels. Emergence of Bouteloua gracilis and Puccinellia distans was in most cases negatively effected by soil amendments.
机译：使用氯化钠（NaCl）作为除冰盐会导致路边土壤中离子浓度高，从而减少这些地区的幼苗出苗。在土壤培养中进行的温室实验测试了三种土壤肥料，石膏（CaSO4 ），钾肥（氯化钾，KCl）和硝酸钾（KNO3 ）的功效，以缓解NaCl胁迫对三种肥料出苗的影响。表现出一定耐盐性的草种，波阿普拉斯草（肯塔基州的早熟禾），香根草（蓝草）和黄楠（碱草）。每个物种-肥料组合均采用两因素析因设计。每两周进行5000毫克/升（0.086 M）NaCl的处理，无论有无肥料，其浓度分别等于5000毫克/升NaCl的摩尔当量的0.5、1和2倍。 CaSO4 的所有肥料都可以缓解大麦草出现的盐胁迫，而在较低的处理水平下，CaSO4对缓解NaCl胁迫的效果最大，而钾和硝酸钾对缓解胁迫的效果最大。在大多数情况下，土壤改良剂会对香根草和蒲苇的出现产生负面影响。

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