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种植     
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  planting
    Studies on Water Consumption Characteristics of Winter Wheat and Summer Maize under Different Planting Patterns
    不同种植模式下冬小麦夏玉米耗水特性研究
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    PLANTING DENSITY AND CROP YIELD——AN ANALYSIS OF QUANTITATIVE RELATIONSHIPS BETWEEN YIELD AND DENSITY
    种植密度和作物产量——产量和密度的数量关系及其分析(续)
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    Studies on the Increase of Grain weight of wheat under the High yield Conditions In Bunch planting
    在高产穴播种植方式下提高小麦粒重的研究
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    ECONOMIC BENEFITS OF DIFFERENT WAYS OF COTTON PLANTING
    棉花不同种植方式的增产效果和经济效益
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    Studies on the Planting Density of Tea
    茶树种植密度的研究
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  plant
    Studies on Temperature Conditions in Cotton Field With Different Plant Types
    棉花不同种植方式田间温度条件的研究
短句来源
    PRELIMINARY STUDY ON INTERACTIONS BETWEEN GENE EFFECTS AND PLANT DENSITY FOR TEN AGRONOMIC TRAITS IN MAIZE
    玉米若干农艺性状的基因效应与种植密度互作的研究初报
短句来源
    An Economic Analysis of a Longjing 43 Plant Density Experiment
    龙井43种植密度试验的经济分析(英文)
短句来源
    A STUDY ON CULTIVATED THEORY TECHNIQUE OF POD CANOPY MODEL OF RAPE I .THE EFFECT OF PLANT DENSITY ON POD CANOPY STRUCTURE OF SPRING RAPE
    油菜结角层模式栽培理论与技术的研究——Ⅰ.春油菜种植密度对结角层结构的影响
短句来源
    PLANT DENSITY AND TUBER SIZE DISTRIBUTION IN POTATOES——Ⅰ.RELATIONSHIP BETWEEN PLANT DENSITY AND TUBER GROWTH
    种植密度与马铃薯块茎大小的分布 Ⅰ.密度与块茎生长的关系
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  cropping
    AN ANALYSIS OF THE STRUCTURE AND FUNCTION OF THE NONIRRIGATED AGROECOSYSTEM WITH DIFFERENT CROPPING SYSTEMS
    旱地不同种植制度下农田生态系统的结构与功能分析
短句来源
    RICE-BASED NEW CROPPING SYSTEMS RESEARCH IN BEIJING DISTRICT
    北京地区水稻新种植制度的研究
短句来源
    FIXED POSITION STUDY ON BASIC CROPPING SYSTEM OF PADDY FIELD IN THE DOWNLAND REGION IN SOUTH SICHUAN
    川南浅丘区稻田基本耕作制度的定位研究——第二报 稻田不同多熟种植方式的增产效果及对土壤肥力的影响
短句来源
    EVALUATION OF MULTIPLE CROPPING SYSTEM ON UPLAND FIELD
    旱地多熟种植方式综合评价初探
短句来源
    MULTIFACTORIAL EVALUTION OF ECONOMIC AND ECOLOGIC EFFECT OF CROPPING SYSTEM WITH APPLICATION OF RALATIONAL GRADE ANALYSIS
    应用灰色关联分析综合评估种植制度经济和生态效益
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  planted
    STUDIES ON VARIETAL CHARACTERISTICS IN CULT1VARS OF ORYZA SATIVA Ⅰ. The Heritability, Correlation and Path-analysis of Characters of IR-varieties Planted in Guangzhou
    水稻品种种性研究——Ⅰ.IR品种在广州种植下性状的遗传力、性状相关和通径分析
短句来源
    Trial on Planting Density of Summer Planted Sugarcane“Fuyin 79—8”
    夏植蔗“福引79—8”不同种植密度试验
短句来源
    Youjian26,1525,SWT,and Xiaojian18,1509 should be planted in good fertilized and sufficient watered region because of poor stability.
    优鉴26、1525、SWT、小鉴18、1509的增产潜力较大,但稳定性差,只适应于在水肥条件较好的地区种植
短句来源
    [CONCLUSION]Through and Sowing date two factor establishments to the corn output and the agronomic characters and the density the mathematical model regression analysis, screened had determined the Shaandan 8806 corn Sowing date in Guanzhong irrigation area summer seeding being suitable for June 11~on June 18, planted the density is 60494~70442plants/hm2.
    【结论】通过对玉米产量及农艺性状与密度和播期二因素建立的数学模型的回归分析,筛选确定了陕单8806玉米在关中灌区夏播的适宜播期为6月11日—18日,合理种植密度为60494 ̄70442株/hm2。
短句来源
    Study on the adaptability of Jilin soybean cultivars planted in Hangzhou:
    吉林大豆在杭州种植适应性的比较研究
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  planting
The influence of woodland soil bulk density on the growth and distribution of fine root system of main planting tree species in the Weibei Loess Plateau was investigated by means of pot culture and field survey.
      
Besides, runoff and sediment produced in mixed planting of apple trees and crops were 16.14-fold and 2.96-fold than those of O.
      
Container stecklings are more likely to increase the planting survival rate.
      
Therefore, it is important to consider planting densities on the hillsides with slope gradients less than 10° for reconstructing vegetation.
      
To improve soil quality and maintain sustainable productivity, some measures, including planting mixed conifer with hardwood, preserving residues after harvest, and adopting scientific site preparation, should be taken.
      
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  plant
cyclotriazadisulfonamides), viral envelope gp120-binding agents such as plant lectins and glycopeptide antibiotics, HIV integrase inhibitors such as the pyranodipyrimidine V-165, and two new classes of compounds (i.e.
      
The last one is being reported for the first time from this plant.
      
Aqueous extract of the medicinal plant Mentha crispa alters the biodistribution of the radiopharmaceutical sodium pertechnetate
      
The result is significant because the previous conclusions are only applied to open-loop stable plant (or model).
      
In this article, a method for quantitative determination of phytochelatins (PCn being the classic example) and other thiol-containing compounds in mixed standard solution and plant tissues is presented.
      
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  cropping
An experimental study on mitigation of greenhouse gas (CH4, N2O and NO) emission has been conducted in a typical cropping system of Southeast China for 4 years.
      
The experimental results show that this method can survive image cropping and image compression, and get better results, this is also a prospective method.
      
This technique produces a watermarked image that closely retains the quality of the original host image while concurrently surviving various image processing operations such as lowpass/highpass filtering, lossy JPEG compression, and cropping.
      
The actual watermark embedding in spatial domain is followed using permutated image for improving the resistance to image cropping.
      
A new site-specific nutrient management approach was developed to break the apparent attainable yield barrier of 6 t·ha-1 in the double rice cropping system of Zhejiang.
      
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  planted
Baldcypress should not be planted in drought-stricken soils.
      
With all the above techniques, 48 hm2 of clonal forests for pulp use of those clones had been planted in five places in Fujian Province.
      
lanceolata plantation replaced the native broadleaved forest, or Chinese fir was planted continuously.
      
In case it is planted in drought conditions, this tree species should be watered appropriately in order to keep its normal net photosynthetic rate.
      
To determine the impact of photosynthesis and transpiration on nitrogen removal in wetlands, an artificial wetland planted with reeds was constructed to treat highly concentrated domestic wastewater.
      
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  其他


Chemical analysis of seperate plant organs of green manures at various stages of growth collected from representative districts of Central China showed that the accumulation of green mass and the absorption of nutrients chiefly occurred during the last 30 to 45 days before plowing-under.Astragalus sinicus,the principal leguminous green manure in central China,showed some correlation in P and K contents with soil fertility,whereas the nitrogen content remained practically constant regardless the nutritive status...

Chemical analysis of seperate plant organs of green manures at various stages of growth collected from representative districts of Central China showed that the accumulation of green mass and the absorption of nutrients chiefly occurred during the last 30 to 45 days before plowing-under.Astragalus sinicus,the principal leguminous green manure in central China,showed some correlation in P and K contents with soil fertility,whereas the nitrogen content remained practically constant regardless the nutritive status of the soil.It was esti- mated that the nodular bacteria of Astragalus sinicus assimilated about 105 kg of nitrogen per hectare at the yield of 37,500 kg of green mass. Green-house experiments revealed that manure crops possessed a stronger power in assi- milating their phosphorus from rock phosphate and magnesium from serpentine as compared with winter wheat.Laboratory experiments with exciled root also demonstrated that the root systems of manure crops have a stronger absorption power,greater cation-exchange capacity,larger absorbing surface area and more intensive rate of respiration than that of the wheat.Among the tested manure crops,Raphanus sativus,a cruciferous plant widely planted on infertile soils,has been proved the best variety.

1.紫云英与苕子的绿色体一般以初花期前后或盛花期增长最快。紫云英的根系主要分布在0—10厘米,在5,000斤鲜草产量时,1平方尺内约有6克左右的干根。地上与地下部分的干物质比为6.5∶1,鲜重比为11∶1,目前一般对地下部分的产量估计似乎有些偏高。2.紫云英等含氮、磷、钾的百分率均随绿色体的增长而减低,紫云英在盛花期含 N2.7%,P_2O_5 0.65%,K_2O2.5%,CaO 1.6%,含氮量与土壤的肥沃程度没有明显的相关性,含磷量与含钾量则与土壤中磷钾含量成正相关。根部所含的养分一般均低于地上部分,叶子的氮、磷百分率远较茎等部位为高。苕子盛花期含 N 3.3%左右,其他成分大体与紫云英相近。萝卜菜在盛花期的含 N 量为1.7%,K_2O 量较高,一般是 N 与 P_2O_5的总和,含 CaO量恒多于紫云英,一般在2.0%以上。油菜的成分大体与萝卜菜相近。3.各种绿肥在一定生长时期中地上部分的阳离子总量大体为一常数。紫云英在盛花期的阳离子总量维持在110毫当量左右,萝卜菜的含量还更高。4.萝卜菜、紫云英、苕子与小麦等四种植物对蛇纹石都能利用,但对钾长石不能利用。磷灰石的施用对增产很显著,根据...

1.紫云英与苕子的绿色体一般以初花期前后或盛花期增长最快。紫云英的根系主要分布在0—10厘米,在5,000斤鲜草产量时,1平方尺内约有6克左右的干根。地上与地下部分的干物质比为6.5∶1,鲜重比为11∶1,目前一般对地下部分的产量估计似乎有些偏高。2.紫云英等含氮、磷、钾的百分率均随绿色体的增长而减低,紫云英在盛花期含 N2.7%,P_2O_5 0.65%,K_2O2.5%,CaO 1.6%,含氮量与土壤的肥沃程度没有明显的相关性,含磷量与含钾量则与土壤中磷钾含量成正相关。根部所含的养分一般均低于地上部分,叶子的氮、磷百分率远较茎等部位为高。苕子盛花期含 N 3.3%左右,其他成分大体与紫云英相近。萝卜菜在盛花期的含 N 量为1.7%,K_2O 量较高,一般是 N 与 P_2O_5的总和,含 CaO量恒多于紫云英,一般在2.0%以上。油菜的成分大体与萝卜菜相近。3.各种绿肥在一定生长时期中地上部分的阳离子总量大体为一常数。紫云英在盛花期的阳离子总量维持在110毫当量左右,萝卜菜的含量还更高。4.萝卜菜、紫云英、苕子与小麦等四种植物对蛇纹石都能利用,但对钾长石不能利用。磷灰石的施用对增产很显著,根据增产百分率的大小,可排列成如下的次序:紫云英>萝卜菜>苕子>小麦。在某种程度上反映植物对难溶性物质的利用能力的三个指标(根的阳离子交换量、根的吸收面积与根的呼吸强度),对于四种植物,其大小次序基本上与其对磷灰石的利用能力的排列次序相一致。因此从各方面来看,这几种绿肥的吸收养分的能力,都较象小麦这样的农作物为强。5.绿肥是一种成本低收效大的肥料。在紫云英鲜草产量5,000斤时,地上与地下部分所合的氮、磷、钾分别相当于硫酸铵105斤、过磷酸钙22.5斤、氯化钾36斤。假定其中的氮素有2/3是来自大气,则“天然工厂”制造了70斤左右的硫酸铵。中稻亩产600斤时所取走的氮素约相当于50斤硫酸铵,因此单就来自大气中的这一部分来讲,对中稻的供应也还是有余。从全国范围来看,凡是绿肥面积大的地区,也就是稻麦产量高而稳定的地区。目前各地绿肥的种植面积与产量都极不平衡,还有很大的潜力。

Of 11 experiments on the corn planting patterns conducted during 1958 to 1962,5 werestudied in combination with different planting rates.The effects which demonstrated by num-ber of plants per hill,row space and form of plant nutrient area with same planting ratesare presented as follows:1.The effect of number of plants (1-4 plants) per hill.(?)The difference of grainyields between different number of plants per hill with same planting rates is rather smalland of no statistical significance.However,there is...

Of 11 experiments on the corn planting patterns conducted during 1958 to 1962,5 werestudied in combination with different planting rates.The effects which demonstrated by num-ber of plants per hill,row space and form of plant nutrient area with same planting ratesare presented as follows:1.The effect of number of plants (1-4 plants) per hill.(?)The difference of grainyields between different number of plants per hill with same planting rates is rather smalland of no statistical significance.However,there is tendency for the treatment of 1 or 4plants per hill (planting rate:3,000-6,000 plants per mu) to give an unfavourable effect onthe grain yield,while the proper disposition (2 and 3 plants per hill) shows a favourable one.It is due probably to the fact that the condition for accumulating dry matter and transport-ing it to the grains of the plant has to some extent been improved.Consequently,it was foundthat both 2×2 and 2×1.5 chi with 2 plants per hill tend to result in a higher grain yieldunder the treatment of 3,000 and 4,000 plants per mu respectively.For 6,000 plants per mu,2×1.5 chi with 3 plants per hill tends to produce a higher yield.2.The effect of alternating with wide and narrow row spaces(?)For 3,200,3,500,4,000,4,500 and 6,000 plants per mu,the effect of wide-narrow row space with 1,2 and 3 plants perhill was studied.The wide row space was set from 2.5 to 4.0 chi apart,while the narrow rowspace from 0.5 to 1.0 chi apart.It was observed that only for 3,200 and 4,000 plants per muwith 1 plant per hill and the wide row space not more than 3 chi apart,the treatment of wide-narrow row space tends to give a higher grain yield,but there is no statistically appreciabledifference.3.The comparison of the effects between hill planting in hexagon and in square bothwith 2 plants per hill,in equal row space with 1 plant per hill,and in wide-narrow row spacewith 1 plant per hill.(?)The changes of leaf area,accumulation and distribution of drymatter,light intensity and grain yield brought about under the above stated treatments havebeen fully studied during the stages of development of corn plant.It has been found that thegrowth under the treatment with 1 plant per hill is better than that of under the treatmentwith 2 plants per hill at the early stage (i.e.before the later silking stage).The accumula-tion of dry matter under the treatment of hill planting in hexagon is increased during thelater stage (i.e.after the later silking stage) as soon as the light condition being improved.The grains yielded under these treatments are approximately equal,yet those under the treat-ments in hexagon and in equal row space with 1 plant per hill are slightly higher in strawyield.4.The effect of varied planting patterns is not significant.In general,the difference ofyield is only rendered around 5 per cent.Unless the corn plants are planted in an extremelyunevenness,there is no reduction of grain yield at all.It is therefore rather advisable'totake a rational planting rate than an optimum pattern in agricultural production.Moreover,on selecting a certain pattern for corn planting,such points as aperation convenience,labour-saving devices,efficiency of manuring and increase of total yield when intercropped should betaken place for special consideration.The profit derived therefrom may often be greater thanany of the most properly considerated planting arrangements.

在11个玉米种植方式试验中,研究了同等密度下,每穴株数不同、行距不同、营养面积的形状不同的效应。发现各种种植方式的产量和性状虽有一定差异,但一般多不够显著。

In 1952 to 1962 and 1958 to 1962,15 experiments on the planting rate and the spacing ofcorn were made in Hwaiyin region together with the investigation for corn production underlarge area.All experiments were conducted under spring sowing.Based on the data,obtainedthe main results are summarized as follows:1.It has been found that the relationship between the planting rate (x) and the grainyield of corn population (y) may be expressed by:y=a+bx+cx~2In the above equation,a,b and c are constants and,a and b are...

In 1952 to 1962 and 1958 to 1962,15 experiments on the planting rate and the spacing ofcorn were made in Hwaiyin region together with the investigation for corn production underlarge area.All experiments were conducted under spring sowing.Based on the data,obtainedthe main results are summarized as follows:1.It has been found that the relationship between the planting rate (x) and the grainyield of corn population (y) may be expressed by:y=a+bx+cx~2In the above equation,a,b and c are constants and,a and b are positive,c is negative.There-fore,under the definite agrotechnic level the planting rate with the maximum yield x_m mustbe found and the x_m is equal to (-b)/(2c) theoretically.2.)The relationship between the agrotechnic levels (L) and the planting rate with maximumyield (x_m) may be expressed by:x_m=a+β_Lwhere a and β are constants and β<0.The optimum rate of planting will therefore be in-creased as the agrotechnic levels are raised.3.Under the same condition of agrotechnic,the optimum rate of planting for the varie-ties with early maturity and low stalk is greater than that with late maturity and tall stalk.4.The variety with early maturity and low stalk“Ell-fwu-zaw”is being planted widelyin Hwaiyin.As a general rule,its rate of planting is in the range from 1,500 to 1,600 plantsper mu.In order to raise the yield of corn under large area plantation it is therefore an im-portant process to increase the planting rate to not less than 2,000 plants per mu in this region.5.It has been found that the grain yield per mu with the wide-narrow row space(thewide row space from 3 to 5 chi~* apart and the narrow row space 1 chi)decreases 8 to 10 percent as compared with that with the equal row space (distance between the rows from 1.8to 2.5 chi apart) under the same condition (including the planting rate),and the greater thewide row space is extended,the more the grain yield will be reduced.6.The reasons why the grain yield with the wide-narrow row space decreases are:(1)the distribution of root system and green leaves is uneven;(2)the fertility of soil andthe energy of sunlight can not be thoroughly utilized;(3)the area of green leaves decreasesand (4) the net rate of assimilation declines.

本文综合分析了淮阴地区历年来有关春玉米密植定额和种植方式的试验资料。在密植定额问题上,研究了密度与产量、品种、生产水平间的关系,并从田间小气候、植株生长发育、光能利用、群体与个体关系等方面探索了密植增产的原因;在种植方式问题上,比较了不同生产水平和不同密度下,宽窄行和等行距的效果,并从根系发育、植株性状、田间小气候、光能利用等方面分析了宽窄行减产的原因。

 
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