腐植酸水溶肥料对盐胁迫下燕麦阳离子含量及产量的影响

Effect of Humic Acid Water Soluble Fertilizer on Oat Positive Ion and Yield under Salt Stress

本试验为探讨燕麦抗盐机制和适应盐胁迫能力,研究了0 mmol/L、50 mmol/L、100 mmol/L、150 mmol/L、200 mmol/L 5个盐浓度胁迫下,喷施腐植酸水溶肥料对燕麦叶片中Na+、K+、Ca2+、Mg2+含量及燕麦产量和产量构成因素的影响。结果表明:在盐胁迫下,与喷施清水相比,喷施腐植酸水溶肥料能降低燕麦叶片中Na+含量,增加K+、Ca2+、Mg2+含量。在灌浆期150 mmol/L盐浓度胁迫下,与喷施清水相比,喷施腐植酸水溶肥料燕麦叶片中Na+、K+、Ca2+、Mg2+含量和Na+/K+、Na+/Ca2+、Na+/Mg2+值基本保持不变。在灌浆期200 mmol/L盐浓度胁迫下,与喷施清水相比,喷施腐植酸水溶肥料燕麦叶片中Na+/K+、Na+/Ca2+、Na+/Mg2+分别降低了49.61%、56.40%、39.00%,产量提高了28.52%。在盐胁迫下,喷施腐植酸水溶肥料通过降低燕麦叶片中Na+/K+、Na+/Ca2+、Na+/Mg2+值,提高单株穗粒数,使燕麦保持较高产量。

In order to discuss the oats salt resistant mechanism and the ability to adapt to salt stress, the effects of humic acid water soluble fertilizer on oat leaf of Na+, K+, Ca2+, Mg2+contents and oat yield and yield components were inves-tigated under 0 mmol/L, 50 mmol/L, 100 mmol/L, 150 mmol/L and 200 mmol/L salt stress. The result showed that under salt stress, compared with spraying water, spraying humic acid water soluble fertilizer can reduce the content of Na+in oat leaves, increase the content of K+, Ca2+, Mg2+. However, compared with spraying water, there was little differences between the content of Na+, K+, Ca2+, Mg2+and the value of Na+/K+, Na+/Ca2+, Na+/Mg2+under 150 mmol/L salt stress at iflling stage after spraying humic acid water soluble fertilizer. The value of Na+/K+, Na+/Ca2+, Na+/Mg2+in oat leaf was decreased by 49.61%, 56.40%, 39.00%respectively and the yield was increased by 28.52%under 200 mmol/L salt stress after spraying humic acid water soluble fertilizer than that spraying water at iflling stage. Under salt stress, spraying humic acid water soluble fertilizer could decrease the value of Na+/K+, Na+/Ca2+, Na+/Mg2+in oat leaf, increase the spike grain number of per plant and keep higher oat yield.