Foliar Application of Humic Acid on Plant Height in Canola

APCBEE Procedia Pub Date : 2014-01-01 DOI:10.1016/j.apcbee.2014.03.005

Behzad Sani

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引用次数: 34

Abstract

Humic acid is a principal component of humic substances, which are the major organic constituents of soil. In order to the foliar application of humic acid on plant height in canola spring cultivar (RGS-003 cul.), this experiment was conducted in 2012 at Islamic Azad University Shahr-e-Qods Branch in Tehran by a completely randomized design with four replications. The factors studied included foliar application of humic acid (Control, 0.5, 1, 1.5 and 2%) that sprayed in three stages (stem elongation, flowering stage and silique formation stage). The results showed that foliar application of humic acid significantly affected plant height and highest this parameter was achieved under 2% foliar application of humic acid and the lowest plant height was obtained under control conditions. Also, means comparison showed that plant height under 0.5% foliar application of humic acid and 1% foliar application of humic acid were in a similar statistical group. The results showed that foliar application of humic acid decreased nitrogen application in soil, that can be the most important for the non-pollution of soil by nitrogenous fertilizers.

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腐植酸对油菜株高的叶面施用

腐植酸是土壤的主要有机成分腐植酸物质的主要成分。为了研究腐植酸对春季油菜品种(RGS-003 cul.)株高的叶面施用，本试验于2012年在伊朗伊斯兰阿扎德大学德黑兰分校采用4个重复的完全随机设计进行。研究的影响因素包括叶面施用腐植酸(对照、0.5%、1%、1.5%和2%)，分茎伸长、开花期和角蕊形成期喷施。结果表明，叶面施用腐植酸对株高有显著影响，在叶面施用2%腐植酸时，该参数最高，在对照条件下，株高最低。平均比较表明，叶面施用0.5%腐植酸和叶面施用1%腐植酸的株高具有相似的统计学意义。结果表明，叶面施用腐植酸可减少土壤氮素的施用量，这对氮肥对土壤的无公害是最重要的。

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APCBEE Procedia

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