摘要
通过对川中丘陵区29个乡镇500个土样的有机质和全氮的检测发现,川中丘陵区有机质含量为7.48～43.05 g/kg,平均为18.53 g/kg,主要处于Ⅱ级丰富水平和Ⅲ级中等水平,Ⅱ级和Ⅲ级所占比例分别为63.4%和27.4%。全氮含量为0.55～2.55g/kg,平均为1.27 g/kg,含量主要处于Ⅱ、Ⅲ和Ⅳ级,各级所占比例分别为49.8%、21.6%和22.4%。土壤有机质与全氮显著正相关,相关系数为0.9479,线性回归方程为TN=0.053OM+0.29,换算系数0.046～0.103,平均0.070。
The organic matter（OM） and total nitrogen （TN） of 500 soil samples were measured in central hilly area of Siehuan. The results showed that the range of OM and TN were 7.48 - 43.05 and 0.55 - 2.55 g/kg, respectively and the mean of those were 18.53 and 1.27 g/ kg, respectively. Soil OM in central hilly area of Sichuan was rich （ the second class） or medium level （ the third class）, and their rate were 63.4 % and 27.4 %, respectively. Most of TN was the second degree, and the third degree or the fourth degree, and their rate were 21. 6 %, 49.8 % and 22.4 %, respectively. In addtion, OM in soil was closely and positively related to soil TN, and the correlation coeffcient was 0. 9479, the regTessive equation was OM = 0. 053 TN ＋ 0. 29, conversion coeffcient between OM and TN was from 0. 046 to 0. 103, and the mean was 0. 070.
出处
《西南农业学报》
CSCD
北大核心
2013年第2期663-666,共4页
Southwest China Journal of Agricultural Sciences
基金
四川省财政育种青年基金项目(2010QNJJ-020)
国家小麦产业技术体系项目(CARS-3-2-41)
国家牧草产业技术体系项目(CARS-35-36)
四川省财政基因工程项目(2011JYGC09-024)
四川省财政育种论文基金项目(2012LWJJ-005)
关键词
川中丘陵区
有机质
全氮
Central hilly area
Organic matter
Total nitrogen
