呼伦贝尔沙地人工杨柴林平茬复壮技术研究
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摘要
以鄂温克旗东苏木沙地13a人工杨柴林为研究对象,分析不同平茬方式(留茬高度、带状与块状、预留盖度)对杨柴林的生长影响,结果表明:(1)对于4种平茬高度(0~5,10,20~30和40~50cm),留茬0~5cm时,分枝数、生物量等各生长项指标最大,且与其他处理有显著差异;(2)带状与块状处理间无显著差异,4种平茬带宽(2m、4m、6m、8m)对杨柴的生长状况的影响差异显著,带宽8m时,各项生长指标最大;(3)4种预留盖度(10%,20%,30%,40%)对杨柴的生长状况无显著差异。
Hedysarum fruticosumis the main tree species for windbreak and sand fixation in Hulunbeier sandy land.However,with the increase of forest age,the growth declines and the decrease of benefits appear in different degrees.Stumping measures can promote strong growth,strengthen the ability of sandy shrubs to germinate,promote growth,and it is conducive to sustainable development of ecological functions.Hedysarum fruticosum plantation in Eastern Sumu Sandy Land of Ewenke Banner was used as the research object to analyze the effects of different stumping methods(stumping height,belt shape and block shape,reserved cover degree).Result shows that:(1)Four kinds of stubble height(0-5 cm,10 cm,20-30 cm,40-50 cm)were treated.When the stumping is 0-5 cm,each indexes of the number of branches,biomass and other growth are the largest;(2)There is no significant difference between banded and block treatments.The effects of four stubble widths(2 m,4 m,6 m,8 m)on the growth of Hedysarum fruticosum are significantly different from those of other treatments.When the bandwidth is 8 m,the growth indexes are the most.(3)There is no significant difference in the growth of Hedysarum fruticosum between four kinds of reserved cover(10%,20%,30%,40%).
Hedysarum fruticosumis the main tree species for windbreak and sand fixation in Hulunbeier sandy land.However,with the increase of forest age,the growth declines and the decrease of benefits appear in different degrees.Stumping measures can promote strong growth,strengthen the ability of sandy shrubs to germinate,promote growth,and it is conducive to sustainable development of ecological functions.Hedysarum fruticosum plantation in Eastern Sumu Sandy Land of Ewenke Banner was used as the research object to analyze the effects of different stumping methods(stumping height,belt shape and block shape,reserved cover degree).Result shows that:(1)Four kinds of stubble height(0-5 cm,10 cm,20-30 cm,40-50 cm)were treated.When the stumping is 0-5 cm,each indexes of the number of branches,biomass and other growth are the largest;(2)There is no significant difference between banded and block treatments.The effects of four stubble widths(2 m,4 m,6 m,8 m)on the growth of Hedysarum fruticosum are significantly different from those of other treatments.When the bandwidth is 8 m,the growth indexes are the most.(3)There is no significant difference in the growth of Hedysarum fruticosum between four kinds of reserved cover(10%,20%,30%,40%).
引文
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