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摘要
土壤有效磷含量是指当季可被植物利用的磷量,磷是植物必需的大量营养元素之一,对于作物的生长发育具有不可替代的作用,根据土壤中有效磷的丰缺以及土壤的酸碱性现状,合理平衡施肥,调节土壤酸碱度,因土施肥。为明确土壤在中性(pH6.5~7.5)范围内,土壤有效磷较高是同一种土壤通过酸碱度调控得到的结论还是不同酸碱度的土壤通过比较得到的结论,本论文以河北、山东、江西、贵州、湖南、广东等地的10个原始土样为实验对象,通过酸碱度调控后,根据土壤pH值划分为酸性土壤、弱酸性土壤、中性土壤和弱碱性土壤,然后用4种化学浸提剂对土壤进行提取比较同一来源不同pH值的土壤以及不同来源同一pH的土壤有效磷含量。结果表明,在中性(pH6.5~7.5)范围内,中性土壤有效磷有效性较高的说法有一定的局限性,同一来源不同酸碱度的土壤中,一部分土壤是中性土壤的有效磷含量较高,另一部分土壤是中性土壤的有效磷有效性低于其他酸碱度的土壤;而不同来源的同一pH值的土壤有效磷含量相差较大,缺乏可比性。
Abstract
The content of available phosphorus in soil refers to the amount of phosphorus that can be utilized by plants in the season.Phosphorus is one of the most important nutrient elements for plants and plays an irreplaceable role in the growth and development of crops,according to the abundance and shortage of available phosphorus in soil and the present situation of soil acidity and alkalinity,we should balance fertilization reasonably,adjust soil acidity and alkalinity,and make up fertilizer because of soil.In order to clarify whether the higher soil available phosphorus in the neutral(pH 6.5~7.5)range is the result of the same soil through the regulation of acidity and alkalinity,or the result of the comparison of soils with different acidity and alkalinity,in this study,10 original soil samples from Hebei,Shandong,Jiangxi,Guizhou,Hunan and Guangdong were taken as experimental subjects,according to the soil pH value divided into acid soil,weak acid soil,neutral soil and weak alkaline soil,then four chemical leaching agents were used to extract and compare the phosphorus content in soils from the same source with different pH values,as well as in soils from different sources with the same pH.The results showed that there were some limitations in the statement that the availability of available phosphorus in neutral soil was higher in the range of pH6.5~7.5,some of the soils with different pH values from the same source had higher content of available phosphorus,and some of the soils with neutral pH values had lower available phosphorus than those with other pH values The available phosphorus content of soil with the same pH value from different sources is quite different and has no comparability.
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刘小锋,何蕊,高婷,张新明.
碱度调控对不同土壤有效磷测定值的影响研究[J].
绿洲农业科学与工程, 2026, 11(03): 50-54 DOI:10.26941/j.cnki.2096-2177.2026.03.008
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基金资助
全国高校实验室工作研究会农业高校分会研究项目—三棱锥协同模型视域下高校实验室精准化安全文化体系构建路径探索与实践(NYFH2025-34)
广东省高等教育学会实验室管理专业委员会基金重点项目—“双一流”建设视野下高校实验室安全文化内涵式建设新路径的探索与实践(GDJ20240009)