原创《湖南不同母质植烟土壤供钾能力钾释放特性》：本文关于母质论文范文,可以做为相关论文参考文献,与写作提纲思路参考。
摘 要：为探明湖南不同母质植烟土壤供钾能力及钾释放特性,对4种主要成土母质植烟土壤进行了调查研究.结果表明,4种母质植烟土壤主要释放易解吸的特殊吸附钾,非交换性钾的释放量相对较小；土壤水溶性钾、特殊吸附钾含量和初始释钾速率和半释钾速率均达显著正相关.第四纪红土母质土壤虽然钾容量和供钾潜力有限,但却有较高的初始释钾速率及有效钾水平；石灰岩母质土壤拥有较高的特殊吸附钾含量,能为土壤提供较稳定的有效钾,土壤供钾能力较强；而紫色页岩和板页岩母质土壤虽然钾库容量大,供钾潜力也大,但有效钾含量相对较低,土壤供钾强度有限.不同母质土壤的供钾强弱为：石灰岩>第四纪红土>板页岩>紫色页岩.
关键词：湖南；成土母质；植烟土壤；供钾能力；钾释放
中图分类号：S572.01文章编号：1007-5119（2017）03-0020-06DOI：10.13496/j.issn.1007-5119.2017.03.004
Potassium Supply Capacity and Release Characteristics of Tobacco-planting Soils Originated from Different Parent Materials in Hunan
YAN Hongxing, LUO Jianxin*, OUYANG Zhibiao, TIAN Fei
（College of Resources and Environment, Hunan Agricultural University, Hunan Provincial Key Laboratory of Plant Nutrition in Common University, Changsha 410128, China）
Abstract： In order to explore the potassium supply capacity and releasing characteristics of different tobacco-planting soils originated from different parent materials in Hunan Province, tobacco-planting soils originated from 4 representative parent materials were surveyed. The results showed that： the release amount of potassium mainly depends on the specially absorbed potassium, and is relatively less from non-exchangeable potassium； There are significantly positive correlations between soluble potassium and the initial release rate or the rate of semi release potassium, and between absorbed potassium and the initial release rate or the rate of semi release potassium. In despite of the limited soil potassium supplying capacity, soils derived from the Quaternary Red Soil parent material maintained high potassium initial rates and available potassium levels, and soils originated from the limestone parent material showed higher specially absorbed potassium which provides relatively stable potassium sources and has better potassium capacity； By comparison, soils originated from the purple slate and plate shale parent materials have larger potassium storage capacity and potassium supplying potential, but the available potassium content is relatively low, and the amount and supply intensity level of potassium is limited. Soils derived from the limestone parent material were top ranked in potassium supplying capacity, followed by Quaternary Red Soil,late shale, and purple slate.
Keywords： Hunan；parent material； tobacco-planting soil； K supply capacity； K release
鉀是烟草吸收最多的元素之一[1].钾能促进烟草的代谢和生长,影响烟草品质[2-3].钾在土壤中以多种形态存在,土壤供钾能力和成土母质和钾的存在形态关系密切,成土母质是钾的主要来源[4].孟霖等[5]研究表明,成土母质影响土壤的本质特性,在影响土壤供钾能力上比其他因素重要；王允白等[6]、李军等[7]和LUEBS等[8]研究表明,成土母质是影响土壤供钾能力的重要原因,不同成土母质土壤的供钾能力及速效钾的水平差异较大,石灰岩母质和页岩母质土壤供钾能力大于花岗岩母质和砂
母质论文参考资料：
结论：湖南不同母质植烟土壤供钾能力钾释放特性为关于母质方面的论文题目、论文提纲、母质类型定义论文开题报告、文献综述、参考文献的相关大学硕士和本科毕业论文。
