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马尾松幼林
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  young masson pine plantations
     EFFECTS OF DIFFERENT SILVICULTURAL TECHNIQUES ON GROWTH OF YOUNG MASSON PINE PLANTATIONS
     不同造林技术措施对马尾松幼林生长影响的研究
短句来源
     The results of the study showed that from great to little order of effects of the main silvicultural techniques to growth of young masson pine plantations was :site selection,seed origin selection,planting density,young stand fertilization and soil preparation.
     结果表明,主要造林技术措施对马尾松幼林生长自大到小的影响顺序为:立地选择,种源选择,造林密度,幼林施肥,整地方式。
短句来源
  juvenile masson pine plantation
     Study on Consecutive 8 year Effect of Fertilizer to Juvenile Masson Pine Plantation
     马尾松幼林施肥持续8年的生长效应
短句来源
  young pinus
     Investigations on Effect of Different Tending Methods on Young Pinus massoniana
     马尾松幼林不同抚育方法效果调查
短句来源
     Effect of the Reservation Quantity of Cunninghamia lanceolata Coppice Shoots on the Growth of Young Pinus massoniana Forests
     杉木萌芽条保留数量对马尾松幼林生长的影响
短句来源
     The Productivity of 5-Year-Old Young Pinus massoniana Forest on Different Site Conditions and Its Distribution
     不同立地条件5年生马尾松幼林的生产力及其分配
短句来源
     Synthetic Analysis on the Fertilization Effects for Young Pinus massoniana Plantation
     马尾松幼林施肥效应综合分析
短句来源
     Investigations on effect of different tending methods on young Pinus massonina stand in Taishun county, Zhejiang province indicated that young stand with density of 13500 tree/ha planted in 1983 and thinning in 1988 and 1993 with density of 1395 tree/ha had 65.27% much height growth and 94.23% much D. B.H. increment than one without thinning.
     通过对泰顺县主要造林树种马尾松幼林不同抚育方法的效果调查表明,1983年造林密度为13 500株/hm的马尾松幼林,1988、1993年进行抚育间伐,保留密度为1 395株/hm2,树高生长比不抚育间伐林分增长65.27%,胸径增长94.23%。
短句来源
  “马尾松幼林”译为未确定词的双语例句
     The effects of the different treatments on the growth of %Pinus massoniana% were different. The best fertilizer treatment was P-2(P-2O-5:100 kg5hm+{-2}), in which the tree height, DBH and stand volume increased by 3^75%, 14^17% and 33^60% respectively than those of CK.
     在配比试验中对马尾松幼林生长最好的处理为P2 (P2 O5用量 10 0kg·hm- 2 ) ,其树高、胸径、蓄积量与CK比分别增加了 3 75 %、14 17%、33 6 0 % ;
短句来源
     Proposale were offered that under 10 years P. massoniana forest was not need pruning, keeping 5—7 whorls in 10—20 years forest, and 6 whorls in over 20 years forest.
     建议10年生以下马尾松幼林不要打枝,10~20年生留枝5~7轮,20年生以上留枝6轮为好。
短句来源
     The results of the fertilization experiment of Pinus massoniana for three years show that the treatment of applying phosphate fertilizer is the most effective for the growth of P.massoniana young plantations and applying phosphate fertilizer alone brings an increase of 20 5~22 2% in height growth and 19 8~20 8% in ground diameter;
     三年来的马尾松幼林施肥试验结果表明,马尾松幼林理想的施肥处理是磷肥处理,单施磷肥马尾松幼林树高增益20.5%~22.2%,地径生长增益19.8%~20.8%;
短句来源
     It brought to light the growth law of engineering young forest of Pinus massoniana Lamb. and its main influential meteorology factors, and to light the change law of organ biomass as tree ages on Pinus massoniana Lamb., and the predictional model of regression equation of organ biomass with ground diameter was built respectively.
     揭示了马尾松幼林生长量规律及其影响的主要气象因子,马尾松工程幼林各器官生物量随年龄的变化规律,并分别建立与地径逐月生长量的回归预测模型。
短句来源
     Study on the Nutrition Dynamics of Young Forests of Pinus massoniana Treated with Fertilization
     马尾松幼林施肥后营养动态研究
短句来源
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  young pinus
In a scoping study on young Pinus radiata trees (aged 8-11) no systematic differences were found between the Fakopp acoustic velocity on opposite sides of young trees.
      
The amounts of free sterols, steryl esters and lipid phosphorus were determined in the sapwood and heartwood of mature, and in the outer and inner sapwood of young Pinus sylvestris trees.
      
Stems of young Pinus sylvestris trees (up to 13 years old) show in the inner sapwood higher amounts of both free sterols and steryl esters than the peripheral younger wood zone.
      
Seasonal Variation in Amount and Composition of Monoterpenes Emitted by Young Pinus pinea Trees - Implications for Emission Mode
      
We studied whole canopy emissions from young Pinus pinea during a 15-month enclosure in greenhouse chambers and examined data for other long-term influences.
      
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Investigation on the major causes of low output of Pinus massoniana showed that breast-height diameter of pinus massoniana pruned intensity was 60% of that of pruned moderately. The current year breast-height growth decreased 0.34 cm by keeping three whorls. Proposale were offered that under 10 years P. massoniana forest was not need pruning, keeping 5—7 whorls in 10—20 years forest, and 6 whorls in over 20 years forest.

作者对马尾松(Pinus,massoniana)林低产主要原因进行了调查,结果表明强度修枝的马尾松胸径只有适度修枝的60%;春、夏季修枝只留三轮的,马尾松当年胸径生长量下降0.34厦米。建议10年生以下马尾松幼林不要打枝,10~20年生留枝5~7轮,20年生以上留枝6轮为好。

Four type of plantation were: wide row, close plantation of Cunnighamia lancaolata narrow row plantation of Cunnighamia lancaolata group of Cunnighamia lancaolata plantation in young masson pine stand and mixed plantation of Cunninghamia lancaolata with common Sassafras tzumu belt. The growing stock volum of 5-years Cunnighamia lancaolata(7-years Pinus massoniana)respectively reached 4.1663m~3, 4.1877m~3, 1.0717m~3, and 6.0424m~3 which showed the result of high yiled and fast growth of Cunnighamia lancaolata...

Four type of plantation were: wide row, close plantation of Cunnighamia lancaolata narrow row plantation of Cunnighamia lancaolata group of Cunnighamia lancaolata plantation in young masson pine stand and mixed plantation of Cunninghamia lancaolata with common Sassafras tzumu belt. The growing stock volum of 5-years Cunnighamia lancaolata(7-years Pinus massoniana)respectively reached 4.1663m~3, 4.1877m~3, 1.0717m~3, and 6.0424m~3 which showed the result of high yiled and fast growth of Cunnighamia lancaolata in this study.

本试验包括杉木宽行密株造林、杉木阔狭行造林、马尾松幼林中杉木团状造林和杉檫带状混交造林四种方式。5年生杉木(马尾松7年生)亩均立木蓄积分别为4.1663m~3、4.1877m~3、1.0717m~3和6.0424m~3,达到了早期速生丰产的试验目的,取得了较高的经济效益。

The study on the effect of three kinds of measures to promote natural regeneration shows that very kind of artificial measures can obviously increase the land's vtilization ratio ( the area ratio of advlt forest), density and growth of young growth. The density of young growth treated with herb-chopping, controlled burning and supplementary seeding increased by 66%, and presenting even distribution. The average height and diemeter at butt-end of 4-year-old cyoung growth increased by 25% and 23% respectively...

The study on the effect of three kinds of measures to promote natural regeneration shows that very kind of artificial measures can obviously increase the land's vtilization ratio ( the area ratio of advlt forest), density and growth of young growth. The density of young growth treated with herb-chopping, controlled burning and supplementary seeding increased by 66%, and presenting even distribution. The average height and diemeter at butt-end of 4-year-old cyoung growth increased by 25% and 23% respectively It is estimated that eco-nmic bemifet per year in the final cwtting phase ( 4C-year-old ) will grow 383.2 yuan per ha., Next, the density, average height, diameter at butt-end and economic benifet of young growth managed by herb-chopping and controlled burring can increase 34%, 21.5%, 13% respectively in the comparison with the control.

三种不同技术措施对促进马尾松天然更新效果表明:各种人工促进措施对提高林地利用率、马尾松幼林密度和幼树生长均有明显效果。其中采用劈草、炼山、辅助播种的幼林,其密度比对照提高66%,且分布均匀,四年生幼树平均树高增长25%;平均地径增大23%,预计至主伐(40年)时,每公顷每年可增加经济收入383.2元。采取劈草、炼山措施其幼林密度、平均树高、平均地径分别提高34%、21.5%、13%。

 
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