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林木成活率
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  “林木成活率”译为未确定词的双语例句
     Measures for regulating surface run off such as level steps with level trenches,ponds,dams under the present economic and technical conditions can check 55% of the total surface run off,and increase soil water content and raise the survival rate of these trees to 10%~20%.
     采用水平阶整地,配以水平沟、蓄水池(塘)、小拦坝等径流调节措施,可就地“消化”55%以上的径流,提高林木成活率10%~20%;
短句来源
     All the measures of runoff collecting works, such as inter slope earth edge level terraces, funnel type, swallow tail type and bamboo joint type flexibly adopted for different types of geography can make the survival rate and preserve rate of trees more than 90% and growing speed one time faster.
     在不同的地类灵活采用隔坡软埂水平阶 ,漏斗式、燕尾式、竹节状聚流坑等径流聚集工程 ,均可使林木成活率和保存率达到 90 %以上 ,生长量提高 1倍以上。
短句来源
     In the arid and semi arid area, the precipitation is little, soil moisture insufficient and low survival rate, low preserved rate and slow growing of trees.
     干旱半干旱区降水少 ,土壤水分亏缺 ,林木成活率低、保存率低、生长缓慢。
短句来源
     Adopting the scientific afforestation mode according with the local condition not only can effectively increases the survival ratio of the forest and ensure the project quality,but also have the important significance to adjust the rural industry structure and increase the income of farmers.
     采用科学的符合当地立地条件的造林模式,不仅可以有效地提高林木成活率,确保工程质量,而且对于调整农村产业结构,提高农民收入具有重要意义。
短句来源
     The results show that the \! cave padded plastic film" afforestation technique can prevent evaporation of soil moisture and leakage of soil nutrition and remarkably improve the survival rate and growth of artificial afforestation, and this situation can last for more than 4 months. The survival rate can increase by 31 5% and the biomass of branches by 57%.
     结果表明,该技术可有效防止树根周围土壤水分和养分的蒸发与渗漏,促进浅层根系的生长发育,保水作用可持续4个月以上,对各种树木成活率和生长量均有显著促进作用,在黄土丘陵地区可提高林木成活率3 1 5 % ,年均枝条生长量提高5 7% ,在人工造林中具有广阔的推广前景
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  相似匹配句对
     Estimation for property of forest-crop.
     林木资产评估
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     Study on Tree Eriophyid mites
     林木瘿螨
短句来源
     The survial rate was about 33%.
     其成活率为33%左右。
短句来源
     The successful rate was 100%.
     成活率100%。
短句来源
     In the arid and semi arid area, the precipitation is little, soil moisture insufficient and low survival rate, low preserved rate and slow growing of trees.
     干旱半干旱区降水少 ,土壤水分亏缺 ,林木成活率低、保存率低、生长缓慢。
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In the build-up of the comprehensive shelter fosest system in Rao-yang county,the techniques of trench afforestation were used and studied during 1984 and 1985.The results showed that the survival rate of the trees could be higher than 96%, and the total biomass accumulated in 30 months after afforestation was 1.6 times higher than that of non-trenched. Meanwhile, trench afforestation improved the soil moisture, nutrient status and nutrient content in leaves. Therefore, trench afforestation proved to be a new...

In the build-up of the comprehensive shelter fosest system in Rao-yang county,the techniques of trench afforestation were used and studied during 1984 and 1985.The results showed that the survival rate of the trees could be higher than 96%, and the total biomass accumulated in 30 months after afforestation was 1.6 times higher than that of non-trenched. Meanwhile, trench afforestation improved the soil moisture, nutrient status and nutrient content in leaves. Therefore, trench afforestation proved to be a new efficient way for arid and poor sandy land.

结合饶阳县万亩综合防护林体系建设,笔者于1984~1985年进行了开沟造林技术的研究,结果表明林木成活率达93%以上,林木总生物量(造林后2.5 a)是不开沟造林的1.6倍,同时改善了土壤的水分、养分状况和林木叶片养分含量,为干旱瘠薄的沙地造林开创了一条新途径。

Studies have been made on the techniques for afforestation for six years in the extremely degenerative mountainous land of dry and hot area in Nanjian,Yunnan Province. The tentative results have been obtained. A few species of Eucalyptus and Acacia introduced from Australia,and Tephrosia cardida,Cajan cajanus,Pueraria wallichii etc. are suitable for growing in the area. Measures for regulating surface run off such as level steps with level...

Studies have been made on the techniques for afforestation for six years in the extremely degenerative mountainous land of dry and hot area in Nanjian,Yunnan Province. The tentative results have been obtained. A few species of Eucalyptus and Acacia introduced from Australia,and Tephrosia cardida,Cajan cajanus,Pueraria wallichii etc. are suitable for growing in the area. Measures for regulating surface run off such as level steps with level trenches,ponds,dams under the present economic and technical conditions can check 55% of the total surface run off,and increase soil water content and raise the survival rate of these trees to 10%~20%. It is convenient for afforestation management. On the basis of the experiments,this set of afforestation techniques is effective for restoring vegetation in the extremely degenerative mountainous land of dry and hot valley area in Yunnan Province.

在云南南涧县城后山极度退化山地的治理中,围绕植被恢复而进行的一系列造林技术研究,经6a的试验,现已取得满意结果。树种以原产澳大利亚的桉树类、相思树类以及山毛豆等几种灌木表现较好;采用水平阶整地,配以水平沟、蓄水池(塘)、小拦坝等径流调节措施,可就地“消化”55%以上的径流,提高林木成活率10%~20%;选择适宜的造林方式适时造林;合理组合,科学搭配营造混交林,施肥促长,快速覆盖。在试验区为云南干热地区极度退化山地的治理提供了样板和可行的技术。

The vegetation building of the loess plateau should not only adhere to the laws of regional distribution of natural vegetation, but also fully consider the different laws of microclimate in different topography and location and persist in mutual para position allocation under the conditions of microclimate and plant species ecology. Inadequate total volume of precipitation of macro environment, severe soil and water loss and wind speed and relative humidity of micro environment are the main factors to affect...

The vegetation building of the loess plateau should not only adhere to the laws of regional distribution of natural vegetation, but also fully consider the different laws of microclimate in different topography and location and persist in mutual para position allocation under the conditions of microclimate and plant species ecology. Inadequate total volume of precipitation of macro environment, severe soil and water loss and wind speed and relative humidity of micro environment are the main factors to affect the water balance and normal growth of plants. All the measures of runoff collecting works, such as inter slope earth edge level terraces, funnel type, swallow tail type and bamboo joint type flexibly adopted for different types of geography can make the survival rate and preserve rate of trees more than 90% and growing speed one time faster.

黄土高原的植被建设 ,既要遵循自然植被的地带性分布规律 ,又要充分考虑不同地形部位的小气候分异规律 ,坚持地形小气候条件与植物种生态位条件的相互对位配置。宏观环境的降水总量不足、水土流失严重和微观环境的风速、相对湿度是影响植物水量平衡 ,进而影响植物正常生长发育的主要因素。在不同的地类灵活采用隔坡软埂水平阶 ,漏斗式、燕尾式、竹节状聚流坑等径流聚集工程 ,均可使林木成活率和保存率达到 90 %以上 ,生长量提高 1倍以上。

 
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