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腐殖酸浓度对土壤中磷素转化的影响

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为探索腐殖酸浓度对土壤中磷素转化的影响,以磷酸一铵为唯一磷源,开展了 25℃人工气候箱中恒温连续培养的试验.试验共设 9 个处理,以不施肥为对照(CK)处理,T1～T8 处理依次添加质量分数为 0、0.1%、0.5%、1%、2%、5%、7%、10%的腐殖酸,分别在培养后的第 5、15、30、55、80、105、130、155、180 天取土样测定pH、速效磷及各形态无机磷(Ca2-P、Ca8-P、Al-P、Fe-P、O-P、Ca10-P)含量.结果表明:磷酸一铵+腐殖酸的处理可以有效提高各形态无机磷的含量;腐殖酸添加量为 7%时,对磷的转化和活化影响最大,Ca2-P、Ca8-P的含量最高,较单一磷酸一铵处理的分别提高 79.30%、61.41%.
The Effect of Humic Acid Concentration on Phosphorus Transformation in Soil
In order to explore the effect of humic acid concentration on phosphorus transformation in soil,a constant temperature continuous cultivation experiment is conducted in a 25℃artificial climate box with monoammonium phosphate as the sole phosphorus source.A total of 9 treatments have been set up in the experiment,with no fertilization as the control(CK)treatment.From T1 to T8 treatments,humic acid with mass fractions of 0,0.1%,0.5%,1%,2%,5%,7%,and 10%is added sequentially.Soil samples are taken on the 5th,15th,30th,55th,80th,105th,130th,155th,and 180th day after cultivation to determine pH,available phosphorus,and various forms of inorganic phosphorus(Ca2-P,Ca8-P,Al-P,Fe-P,O-P,Ca10-P)content.The results show that the treatment of monoammonium phosphate+humic acid can effectively increase the content of various forms of inorganic phosphorus.When the amount of humic acid added is 7%,the impact on the transformation and activation of phosphorus is the greatest,the content of Ca2-P and Ca8-P are the highest,which are 79.30%and 61.41%higher than those treated with monoammonium phosphate,respectively.

phosphorus conversionhumic acidinorganic phosphorusavailable phosphorus

杨清俊、田艳艳、李任丰、郭景丽、任荣魁

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河南心连心化学工业集团股份有限公司 河南新乡 453731

磷素转化 腐殖酸 无机磷 有效磷

2024

10.3969/j.issn.2096-7047.2024.02.005

肥料与健康

肥料与健康

ISSN：
年,卷(期)：2024.51(2)
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