湘西植烟土壤有效硼时空变异及影响因素研究
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摘要
为探明湘西植烟土壤有效硼时空变异特征,为湘西烟区硼素营养管理提供科学依据,分别于2000年和2015年在湘西烟区采集土壤样品并测定了有效硼含量,利用经典统计学、地统计学等方法,对该地土壤有效硼及其影响因素进行了研究。结果表明:有效硼含量均值由2000年的0.21 mg/kg增加到2015年0.64 mg/kg,增幅达204.76%;2015年土壤有效硼含量"适宜"和"高"等级的面积大幅增加,分别增加了73.27%和18.39%,而"低"等级则大幅下降,比2000年下降了91.19%。海拔高度、有机质、土地利用方式、轮作方式、地形和土壤母质均对土壤有效硼含量有显著影响,其中海拔高度的解释能力最大,可以解释10.2%的土壤有效硼变异,土壤母质独立解释能力最小,仅解释2.4%的土壤有效硼变异,6项指标累计可解释26.5%的土壤有效硼变异。
To explore the temporal and spatial characteristics of available boron,and to provide scientific basis for the management of boron nutrition in Xiangxi tobacco region,the soil samples were collected and the content of available boron was measured in 2000 and 2015,respectively.The temporal and spatial variation of available boron in the area and its influence factors were analyzed by the methods of classical statistics and geostatistics.The results showed that the average amount of available boron increased from 0.21 mg/kg in 2000 to 0.64 mg/kg in 2015,the increase rate was 204.76%. The area of "suitable" and "high" grade of soil available boron in 2015 increased significantly by 73.27% and 18.39%,respectively,while the "low" level dropped sharply by 91.19%.Altitude,organic matter,land use,rotation,topography and soil parent material all had significant effects on soil available boron content.Altitude had the greatest explanatory power,which could explain 10.2% of soil available boron variation,and the independent explanatory power of soil parent material was the smallest,explaining only 2.4% of soil available boron variation,and the accumulation of 6 indicators can explain 26.5% of the variation of soil available boron.
To explore the temporal and spatial characteristics of available boron,and to provide scientific basis for the management of boron nutrition in Xiangxi tobacco region,the soil samples were collected and the content of available boron was measured in 2000 and 2015,respectively.The temporal and spatial variation of available boron in the area and its influence factors were analyzed by the methods of classical statistics and geostatistics.The results showed that the average amount of available boron increased from 0.21 mg/kg in 2000 to 0.64 mg/kg in 2015,the increase rate was 204.76%. The area of "suitable" and "high" grade of soil available boron in 2015 increased significantly by 73.27% and 18.39%,respectively,while the "low" level dropped sharply by 91.19%.Altitude,organic matter,land use,rotation,topography and soil parent material all had significant effects on soil available boron content.Altitude had the greatest explanatory power,which could explain 10.2% of soil available boron variation,and the independent explanatory power of soil parent material was the smallest,explaining only 2.4% of soil available boron variation,and the accumulation of 6 indicators can explain 26.5% of the variation of soil available boron.
引文
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[2]Tso T C.Production,physiology and biochemistry of tobacco plant[M].Beltsville,Md.:IDEALS,1990.
[3]吕大树.烟田施用硼锌钼微肥效果研究[D].长沙:湖南农业大学,2013.
[4]胡国松,郑伟,王震东,等.烤烟营养原理[M].北京:科学技术出版社,2000.
[5]许自成,王林,肖汉乾,等.湖南烟区烤烟(Nicotiana tabacum L.)硼含量与土壤有效硼含量的关系[J].生态学报,2007,27(6):2309-2317.
[6]李强,周冀衡,张永安,等.曲靖植烟土壤有效微量元素的空间变异和影响因子[J].烟草科技,2013,46(10):63-67,79.
[7]穆童,卢秀萍,许自成,等.罗平烟区土壤有效硼、钼含量与烟叶硼、钼含量的关系分析[J].中国土壤与肥料,2017,(6):44-50.
[8]张薇,高明,宋珍霞,等.重庆市植烟区土壤硼素状况及施硼效应的研究[J].中国土壤与肥料,2006,(5):49-52.
[9]陈丽鹃,沈晗,刘晓颖,等.腾冲火山灰植烟土壤增施镁、锌、硼肥对烤烟产量和质量的影响[J].湖南农业大学学报(自然科学版),2013,39(6):591-596.
[10]冷璐,陆引罡.磷、硼肥用量对烤烟石油醚提取物含量的影响[J].中国土壤与肥料,2015,(3):40-43.
[11]张延春,陈治锋,龙怀玉,等.叶面喷施硼肥对烤烟农艺性状和经济性状的影响[J].土壤肥料,2005,(4):19-21,32.
[12]黎娟,邓小华,王建波,等.喀斯特地区植烟土壤有效硼含量分布及其影响因素--以湘西州烟区为例[J].土壤,2013,45(6):1055-1061.
[13]鲁如坤.土壤农业化学分析方法[M].北京:中国农业科技出版社,2000.
[14]郝黎仁,攀元,郝哲欧.SPSS实用统计分析[M].北京:中国水利水电出版社,2002.110-135.
[15]王政权.地统计学及在生态学中的应用[M].北京:科学出版社,1999.65-132.
[16]李强,周冀衡,杨荣生,等.曲靖植烟土壤养分空间变异及土壤肥力适宜性评价[J].应用生态学报,2011,22(4):950-956.
[17]李强,戴美玲,向德明,等.湘西喀斯特区植烟土壤有效磷时空变异及风险评估[J].土壤,2018,50(1):181-189.
[18]马俊英,青长乐,张学良,等.重庆土壤有效态微量元素的含量与分布[J].西南农业大学学报,1989,11(3):221-228.