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land preparation
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  整地
     In the same natural condition, runoff and sediment reduction benefit of forest land were 27.5% and 47.7% separately; in the condition with land preparation measures, run off amount of forest land redueed by 42.2% ~ 77. 1% comparing with natural slope land.
     在相同自然条件下,林地减水效益为27.5%,减沙效益为47.7%,在有整地措施条件下,林地径流量较自然荒坡减少42.2%~77.1%.
短句来源
     Influence of Land Preparation on Growth and Seed Setting of Cajanus cajan
     不同整地方法对木豆植株生长及结实的影响
短句来源
     The optimization pattern of afforestative techniques with collecting runoff to drought-resistance was present-ed by using L_9~(3~4) plan in the orthogonal experiments. It has shown that the order of four factors contributed to af-forestative quality is as follow:afforestative species (A)>cover material in the planted pits (D)>collection area ofrunoff for each tree(B)>land preparation for afforestation (C).
     本项研究采用正交试验,选用L_9(3~4)正交表拟定试验方案,对半干旱黄土丘陵沟壑区集流抗旱造林技术优化模式进行了研究,结果表明:影响造林质量的四个因素顺序是:造林树种(A)>栽植穴覆盖材料(D)>单株集流面积(B)>造林整地工程(C)。
短句来源
     Through the analyses of characteristics of gully thalweg and soil erosion in upland and gully land,sedi- ment sources in small watershed,sediment yield relationship between upland and gully and ecological functions of vegetation corridor,it is considered that vegetation corridor combined with land preparation measures may block runoff and sediment from upland and reduce the amount of soil erosion in a watershed by 54.5%~77.0 %.
     在分析黄土高原地区的沟沿线、沟沿线上下沟间地和沟谷地土壤侵蚀特征、小流域泥沙来源、坡沟侵蚀产沙关系的基础上,结合廊道的生态功能和以往的研究结果,认为在沟沿线的上部建立草灌与整地工程措施相结合的植物廊道,来拦蓄阻截沟间地的来水来沙,可使流域的土壤侵蚀量减少54.5%~77.0%。
短句来源
     The results showed that the yields and its main factors such as weight of an ear, grains of an ear and weight of 500 grains, were slightly influenced by fertilization under different land preparation methods because the water movement and distribution was changed by land preparation methods.
     结果表明,不同整地方式因影响田间土壤水分、养分的运动和分布,从而进一步影响到施肥效果,故不同整地方式条件下施肥可影响玉米产量及主要产量构成因素,如穗重、穗粒数、500粒重等。
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  整地方法
     Influence of Land Preparation on Growth and Seed Setting of Cajanus cajan
     不同整地方法对木豆植株生长及结实的影响
短句来源
     Under two different types of climate in loess hilly and gully region,following three aspects were studied, namely(1) four general land preparation methods applied to different scale, (2)Soil water moving patern nearby tree plantinghole when different scale of rainwater runoff collecting method adapted,and (3)effect of the technique on both youngand old aforestation tree species growth.
     在黄土丘陵区两个不同的半干旱气候类型区,研究了四种常用的整地方法,以及在采用不同集流整地规格时,植树穴附近土壤水分变化规律及对该区几种常用造林树种的幼龄、成龄林生长发育的影响。
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  “land preparation”译为未确定词的双语例句
     4) On 16° slop area, the runoff would be 77.7%~92.1% reduction in the areas after vegetation measures with narrow terrace and fish-scale pit land preparation from slop farming.
     ④在16°左右坡地采取水保措施(水平条、鱼鳞坑造林)比开荒减少地表径流77 7%~92 1%,在4°左右坡地修梯田比坡耕地减少地表径流54 2%,减少土壤侵蚀67 95%;
短句来源
     Specific studies as follows(1) The basic conditions of land arrangements in Mu Wei of Guanyun County Lizhuang of Ganyu County and Gangbu farmland of donghai County(2) the use of quantitative methods of analysis, based on an earlier evaluation of eco-efficiency indicators for land preparation system, combining various specific project areas to choose corresponding indicators for eco-efficiency analysis;
     (1)灌云县穆圩乡、东海县岗埠农场临河分场、赣榆县厉庄镇土地整理基本情况。 (2)运用定量分析方法,根据前文构建的土地整理生态效益评价指标体系,结合各个项目区具体情况选择相应的指标,进行生态效益分析;
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  land preparation
Our results suggest that Cyperus may affect the growth and establishment of rice seedlings after sowing or transplanting, especially when Cyperus plants are mixed in soil during land preparation by ploughing in rain-fed rice culture.
      
Seeds were inoculated with antibiotic mutants of the bradyrhizobia strains before planting after land preparation.
      
Such information is important in order to evaluate land preparation practices with the use of fire, to determine restoration methods, and to recommend appropriate policy reforms for small-holder farmers.
      
In order to understand the behavior and characteristics of fire in land preparation by small-holder farmers, several peat fire experiments were conducted.
      
Since 2000, some companies using fire for land preparation have been taken to court and been punished.
      
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The paper presents a complete set of techniques for chemical weedings in the course of reclaiming wasteland, land preparation, growing seedlings, forestation, tending of woods, protecting forests and forming firebreak belts in China Fir culture in south China.

本文综述我国南方杉木营林中,从开垦整地、育苗、造林、抚育至护林防火过程中的化学除草配套技术及其经济效益。

The hilly area of the plateau in the upper reaches of the Yangtze River is a weak zone as far as its forest ecological environment is concerned. In recent years,the overcutting of forests has made the originally adverse natural conditions still worsened. The old silvicultural techniques have difficulty in adaption to the regeneration of forests in this zone and thus the survival rate of regeneration is very low. Researches have shown that unfavourable factors affecting forest regeneration are as follows;the...

The hilly area of the plateau in the upper reaches of the Yangtze River is a weak zone as far as its forest ecological environment is concerned. In recent years,the overcutting of forests has made the originally adverse natural conditions still worsened. The old silvicultural techniques have difficulty in adaption to the regeneration of forests in this zone and thus the survival rate of regeneration is very low. Researches have shown that unfavourable factors affecting forest regeneration are as follows;the accumulated temperature in the growing season of younglings is on the low side .and the accumulated temperatures of≥10℃ range only from 500 to 1300℃;the cutover land has a heavy deficit of moisture content,and the amount of deficit in a year reaches 200 to 300 mm:the moisture temperatures are unco-ordinated in the early growing season of younglings;and younglings are often trampled by oxen or sheep. For this reason,a corresponding technique, namely the regeneration of microhabitat,should be adopted ,including strict selection of tree species and sea-sons for regeneration and use of stumps on the cutover land to bring about a favourable microhabitat for the growth of regenerated younglings. And moreover, such silvicultural measures as refining in narrow strip, land preparation in small hole and shading of cuttings can raise the regeneration efficiently. According to the determination of multiple indicators, the microhabitat created by this technique has shown an evident improvement in hydrothermal conditions for the growth of younglings. For example, the water content of soil has increased by 10 to 15% ,the transpiration strength of younglings reduced by 20 to 30% ,the mean daily relative water content in needles raised by 4. 6% ,and the mean daily value of natural saturation deficits of moisture in needles decreased by 6% ,thus making the survival percent of regeneration rise by 20 to 40%. Additionally,this technique is now in common use in the local silvicultural production.

长江上游高原丘陵区系森林生态环境脆弱带。近年来,森林因过度的采伐,使本已恶劣的气候条件更加变坏,传统的营林技术很难适应这一地带的森林更新,保存率极低。研究表明:影响更新的不利因素是苗木生长季有效积温偏低,迹地水份亏缺严重,苗木生长季初期水份温度不协调,牛羊对苗木的践踏等。采用严格选择更新树种和更新季节,尽量利用立地伐桩、困山木等建造有利更新的微生境,结合窄带清林,小穴整地,插枝阴蔽等技术措施,提高了更新成效。通过多项指标的测定,微生境更新技术形成的微生境有效地改善了苗木生存空间的水份热量因素,及多项抗旱性生理指标,大大地提高了更新保存率。本项技术已在当地普遍推广。

The experiment wes conducted by selecting fine legume species such as Astragalus adsurgens and Onobrychis viciesolia with very good adaptability to sow them in spring and every other level strip land preparation on the basis of which semi-artificial grassland was established. The grassland grew so vigoriously that the vegetation cover reached over 80‰~85%. Astragalus adsurgens used to improve grassland has had an average per mu fresh forage production of 671.3 kg within 8 years, while Onobrychis viciesolia...

The experiment wes conducted by selecting fine legume species such as Astragalus adsurgens and Onobrychis viciesolia with very good adaptability to sow them in spring and every other level strip land preparation on the basis of which semi-artificial grassland was established. The grassland grew so vigoriously that the vegetation cover reached over 80‰~85%. Astragalus adsurgens used to improve grassland has had an average per mu fresh forage production of 671.3 kg within 8 years, while Onobrychis viciesolia used to improve grassland has had an average per mu fresh forage production of 1 035.4kg, having an increase of 5.7 times and 9.4 times as high as those prior to the wasted slope improvement with an apparent controlling benefit obtained. This experiment study also probe into the controlling approaches and countermeasures of dry slopes facing the sun in the loess hilly area.

本试验通过选择适应性强的优良豆科牧草沙打旺(Astragalus adsurgens)和红豆草(Onobrychis Viciaefolia)春季播种及采用隔带水平带状整地的改造方式,建立的半人工草地生长茂密,植被覆盖度达80%~85%以上。沙打旺改良草地8年内平均亩产鲜草671.3kg;红豆草改良草地3年内平均亩产鲜草1035.4kg,比荒坡改造前分别提高5.7倍和9.4倍,治理效益比较显著。本试验研究初步探索了黄土丘陵区干旱阳坡的治理途径和对策。

 
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