摘要
为了解贵州铜仁茶园土壤交换性钙、交换性镁和交换性硫含量特征,对印江、思南、松桃、石阡和沿河5个主产茶区143个茶园土壤样品进行测定,并分析其与茶园土壤pH、有机质含量间的相关关系。结果表明:印江和思南茶园土壤交换性钙含量极显著高于其它茶区,土壤交换性钙含量超标;石阡和松桃分别有55.17%和40.00%达到Ⅰ级土壤标准,土壤交换性钙含量丰富;沿河茶园土壤交换性钙平均值仅为314.4mg·kg^(-1),有70.00%的土样处于Ⅲ级土壤标准,交换性钙含量缺乏。铜仁各茶区茶园土壤交换性镁含量平均值均高于Ⅰ级土壤标准临界值,印江全部达到Ⅰ级土壤标准和高产优质茶园土壤标准;沿河有66.67%的土样处于Ⅲ级土壤标准,土壤交换性镁含量缺乏。思南、松桃和石阡茶园土壤交换性硫含量丰富;印江和沿河较低,特别是沿河,有70.00%的土样处于Ⅲ级土壤标准,缺硫严重。土壤交换性钙与pH呈显著正相关,与土壤中有机质的含量呈极显著正相关,与交换性镁呈极显著正相关;土壤交换性硫与有机质呈正相关,而与土壤pH呈负相关,但相关性不显著。
In order to understand the characteristics of soil exchangeable calcium(M 3-Ca),exchangeable magnesium(M 3-Mg)and exchangeable sulfur(M 3-S)in Tongren tea plantation in Guizhou province,143 soil samples of tea plantations in Yinjing(YJ),Sinan(SN),Songtao(ST),Shiqian(SQ)and Yanhe(YH)were measured,and analyzed the correlation between they and soil pH and organic matter(OM)content.The results showed that the M 3-Ca contents of YJ and SN areas′tea plantation soils were exceeded standard,YH area was short of calcium.The average value of M 3-Mg in the tea garden soils of Tongren were higher than that of gradeⅠsoil standard,YJ all reached gradeⅠsoil standard and good quality and high yield tea garden soil standard;YH was 66.67%soil samples in gradeⅢsoil standard,the M 3-Mg content is lacking.The M 3-S content of SN,ST and SQ tea plantation soils were rich,YJ and YH tea plantation soils were lower,especially YH,70%of the soil samples were in theⅢgrade soil standards,and lack of M 3-S serious.There was a significant positive correlation between M 3-Ca and pH,and had a extremely significant positive correlation with OM content and M 3-Mg.M 3-S was positively correlated with OM and negatively correlated with pH,but the correlation was not significantly.
作者
田景涛
陈玲
徐代华
郝翻
TIAN Jing-tao;CHEN Ling;XU Dai-hua;HAO Fan(Tongren Polytechnic College,Tongren 554300,China)
出处
《黑龙江农业科学》
2018年第2期47-52,共6页
Heilongjiang Agricultural Sciences
基金
农业部现代农业产业技术体系建设专项资助项目(CARS-23)
关键词
茶园
交换性钙
交换性镁
交换性硫
贵州
铜仁
tea garden
exchangeable calcium
exchangeable magnesium
exchangeable sulfur
Guizhou
Tongren
