不同地表覆盖处理对湿地松二代种子园土壤温湿度的影响研究  

Effects on soil temperature and soil moisture of ground mulching treatments in seed garden of second-generation Pinus elliottii

作　　者：刘球[1,2] 李志辉[1] 吴际友[2] 陈明皋[2] 李艳[1] 程勇[2] 黄明军[2] 

机构地区：[1]中南林业科技大学,湖南长沙410004 [2]湖南省林业科学院,湖南长沙410004

出　　处：《中南林业科技大学学报》2016年第12期48-54,共7页Journal of Central South University of Forestry & Technology

基　　金：国家林业局948项目"新一代湿地松种子园种质及丰产技术引进"(2013-4-37);"十二五"农村领域国家科技计划专题项目"国外松高世代育种和种苗繁育关键技术研究与示范"(2012BAD01B0203)

摘　　要：对湿地松二代种子园进行不同地表覆盖处理,研究其对土壤温度和湿度产生的影响。结果表明:(1)各地表覆盖处理之间,土壤温度I、土壤温度II和土壤温度III均呈现极显著差异。(2)在不同覆盖处理下,土壤温度I的高低顺序为黑薄膜>白薄膜>对照>锯木屑;土壤温度II的高低顺序为白薄膜>黑薄膜>对照>锯木屑;土壤温度III的高低顺序跟土壤温度II相同。(3)不同土层深度下,土壤温度I的高低顺序为5 cm>15 cm>20 cm>25 cm>10 cm;土壤温度II的高低顺序为5 cm>10 cm>20 cm>25 cm>15 cm;土壤温度III的高低顺序为5 cm>10 cm>20 cm>15 cm>25 cm。(4)不同调查时间点,土壤温度I的高低顺序为16:00>18:00>14:00>12:00>10:00>08:00;土壤温度II的高低顺序为14:00>16:00>18:00>12:00>10:00>08:00;土壤温度III的高低顺序跟土壤温度I相同。(5)不同覆盖处理之间,土壤含水率I和土壤含水率Ⅲ存在极显著差异,土壤含水率Ⅱ差异不显著。(6)各覆盖处理下土壤含水率I高低顺序为:白薄膜>锯木屑>黑薄膜>对照,且最高值比最低值高26.69%;各覆盖处理下土壤含水率Ⅱ高低顺序为:白薄膜>黑薄膜>锯木屑>对照,且最高值比最低值高20.64%;各覆盖处理下土壤含水率Ⅲ高低顺序为:黑薄膜>白薄膜>锯木屑>对照,且最高值比最低值高26.61%。Different ground mulching treatments were set up to abserve the effects on soil temperature and soil moisture in seed garden of second-generation Pinus elliottiL The results showed as follows： （1） There were extreme differences in soil temperature I, soil temperature II and soil temperature III among different ground mulching treatments. （2） The high-to-low order of soil temperature I under different ground mulching treatments was black film 〉 white film 〉 the control 〉 sawdust; The high-to-low order of soil temperature II under different ground mulching treatments was white film 〉 black film 〉 the control 〉 sawdust; The high-to-low order of soil temperature Ⅲ under different ground mulching treatments was the same as soil temperature II. （3） The high-to-low order of soil temperature I at different ground level was 5 cm 〉 15 cm 〉 20 cm 〉 25 cm 〉 10 cm; The high-tu-low order of soil temperature Ⅱ at different ground level was 5cm 〉 10 cm 〉 20 cm 〉 25 cm 〉 15 cm; Tile high-to-low order of soil temperature III at different ground level was 5 cm 〉 10 cm 〉 20 cm 〉 15 cm 〉 25 cm; （4） The high-tu-low order of soil temperature I at different time point of investigation was 16：00 〉 18：00 〉 14：00 〉 12：00 〉 10：00 〉 08：00; The high-to-low order of soil temperature II at different time point of investigation was 14：00 〉 16：00 〉 18：00 〉 12：00 〉 10：00 〉 08：00; The high-to-low order of soil temperature III at different time point of investigation was the same as soil temperature I. （5） There were extreme differences in soil moisture content I and soil moisture content III but no obvious difference in soil moisture content Ⅱ. （6） The high-to-low order of soil moisture content I under different ground mulching treatments was white film 〉 sawdust 〉 black film 〉 the control, while the highest value was 26.69% larger than the lowest. The high-to-low order of soil moisture content II under different ground mulching tre

关 键 词：地表覆盖 土壤温度 土壤含水率 湿地松 种子园 

分 类 号：S714.2[农业科学—林学]