摘要
采用调查收集、取样分析等方法对环神农架地区1700多个耕层土壤样品的pH、有机质和土壤养分进行了分析。结果表明：环神农架地区植烟土壤pH、有机质、碱解氮、速效磷和有效钾含量的一般范围分别为5.02~7.92,11.19~52.24 g/kg,58.69~216.20 mg/kg,3.92~39.00 mg/kg和51.84~332.14 mg/kg,以土壤pH变异最小,土壤速效磷含量变异最大。环神农架地区植烟土壤pH 5.5~7.5的样品占总数的82.5%,多数土壤pH适宜优质烟叶生长,土壤有机质含量和氮含量总体较高,磷和钾含量相对较低。以该区烤烟产值为目标的土壤养分丰缺状况评价结果表明,环神农架地区绝大多数烟区处于供氮能力中等和高的范畴,土壤供磷和钾的能力则多处于中等和低的范畴;土壤供钾能力呈现出明显的区域分布特征,土壤供氮和供磷能力地域分布不明显。
The pH values of and contents of organic matter and nutrients in more than 1700 topsoil samples from areas around Shennongjia were analyzed by way of investigation,collection and sample analysis,the results showed that the ranges of pH values of and contents of organic matter and available N,P and K in tobacco growing soil were 5.02-7.92,11.19-52.24 g/kg,58.69-216.20 mg/kg,3.92-39.00 mg/kg and 51.84-332.14 mg/kg,respectively,with the least and largest CV for pH and available P,respectively.The samples with pH value of 5.5-7.5 suitable for tobacco growth accounted for 82.5%.General speaking,the contents of organic matter and available N in soil were relatively higher,while those of available P and K were relatively lower.In point of the output value of flue-cured tobacco,the soil in most of the areas is rich or moderate in N supplying,and moderate or short in P and K supplying.K is obviously regionally distributed,while N and P are not.
出处
《烟草科技》
EI
CAS
北大核心
2010年第1期60-64,共5页
Tobacco Science & Technology
基金
湖北省科技项目资助"环神农架特色优质烟叶开发"(2008BBZ001)
关键词
神农架
烟草
土壤
养分
Shengnongjia
Tobacco
Soil
Nutrient
