摘要
[目的]研究潍坊烟区土壤pH与土壤养分的关系,为该地区烟区平衡施肥提供科学依据.[方法]对潍坊烟区592份土壤样本的pH及其与土壤有机质、速效磷、速效钾、碱解氮、交换性钙、交换性镁、水溶性硼含量的关系进行研究.[结果]潍坊烟区平均pH为6.52,变幅为4.32 ～ 7.67,总体适宜;pH处于适宜烤烟生长的5.50 ～ 6.50间的样本量占总样本的43.41％.pH与土壤有机质、速效钾、交换性钙、交换性镁以及水溶性硼含量呈极显著正相关,与土壤碱解氮含量呈极显著负相关;pH的变化,对土壤有机质影响最大,对交换性镁影响最小.[结论]pH为5.50～6.50时,潍坊烟区土壤有机质、速效磷、速效钾、水溶性硼可满足优质烤烟生产要求,碱解氮和交换性镁含量较高,交换性钙含量偏低.
Abstract
[Objective] To research the relationship between soil pH value and soil nutrients in Weifang Tobacco Growing Area,and to provide scientific basis for the balanced fertilization in this region.[Method] pH values of 592 soil samples in Weifang Tobacco Growing Area were researched,as well as their relationship with the contents of organic matter,rapidly available P,rapidly available K,alkali-hydrolyzable N,exchangeable Ca,exchangeable Mg and water soluble B in soil.[Result] pH value was generally suitable for tobacco cultivation in Weifang Tobacco Growing Area with a mean value of 6.52 and its amplitude of variation from 4.32 to 7.67.About 43.41％ of the soil samples were in the range of 5.5-6.5 pH,which was suitable for tobacco cultivation.The soil pH value was positively related with organic matter,rapidly available K,exchangeable Ca,exchangeable Mg and water soluble B at 0.01 level and were negatively related with alkali-hydrolyzable N at 0.01 level.The change of pH values had the greatest influence on organic matter and the least influence on exchangeable Mg.[Conclusion] Within' pH 5.5-6.5,the content of organic matter,rapidly available P,rapidly available K,and water soluble B could meet the requirement of high-quality tobacco production in the range.The contents of alkali-hydrolyzable N and exchangeable Mg were relatively high,and the content of exchangeable Ca was relatively low.
基金项目
中国烟草总公司山东省公司重点项目(D2014027)
山东中烟工业有限责任公司项目(1308052109)
国家科技期刊平台
NSTL
维普
万方数据