Effect of Humic Acid on Growth and Yield Indices of Sunflower (Helianthus annuus) in a Saline Soil

Journal of Crop Production and Processing Pub Date : 2021-11-01 DOI:10.47176/jcpp.11.3.20917

A. Tadayon, S. Esmaili

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Abstract

This field experiment was carried out in order to investigate the effects of humic acid on the growth and yield of sunflower in a saline soil, using a complete block design with three replications in Kashan, central Iran, in 2014. Treatments consisted of 3 levels of humic acid (1, 3 and 6 liters per ha), no humic acid in soil with sufficient nitrogen, three liters of humic acid per ha in soil without sufficient nitrogen, control of humic acid in soil without sufficient nitrogen. The results showed that the use of humic acid left significant effect on all measured traits. The greatest increase in oil content, 1000 seed weight, head weight, seed yield, head diameter, stem diameter and number of leaves were obtained by use of 3 liters of humic acid in soil with sufficient nitrogen. Maximum increase in plant height and plant weight were obtained by using 6 liters humic acid in soil with sufficient nitrogen and the highest protein content was achieved by using 1 liter of humic acid per ha in soil with adequate nitrogen. The results of this experiment showed that the application of humic acid in a saline soil improves the growth and yield of sunflower plants.

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腐植酸对盐碱地向日葵生长及产量指标的影响

为了研究腐植酸对盐碱地向日葵生长和产量的影响，于2014年在伊朗中部卡尚采用3个重复的全块设计进行了田间试验。处理包括3个水平的腐植酸(每公顷1、3和6升)，在有足够氮的土壤中不施用腐植酸，在没有足够氮的土壤中每公顷施用3升腐植酸，在没有足够氮的土壤中控制腐植酸。结果表明，施用腐植酸对各性状均有显著影响。在氮量充足的土壤中，施用3升腐植酸对含油量、千粒重、穗重、籽粒产量、穗径、茎径和叶数的提高最大。在氮肥充足的土壤中，每公顷施用6升腐植酸可使株高和株重增加最多;在氮肥充足的土壤中，每公顷施用1升腐植酸可使蛋白质含量增加最多。试验结果表明，在盐渍土中施用腐植酸能促进向日葵植株的生长和产量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of Crop Production and Processing

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