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播种面积
相关语句
  planting area
    Rice is one of main food crops in China, its planting area accounts for 30% in all food crops and its yield accounts for 40% in total food yield.
    水稻是我国的主要粮食作物之一,其播种面积占全部粮食作物面积的30%,产量则占粮食总产量的40%。
短句来源
    The ratio of grain crops planting aera to total planting aera was 89.97% in 1949, and in 2002, the ratio was 62.57%,. The ratio of other crops area to total planting area was 1.19% in 1949, but in 2002 was 21.73%, mostly grain planting area was increased greatly.
    山东省粮食作物播种面积占总播种面积的比例由1949年的89.97%下降到2002年的62.57%,其他作物播种面积占总播种面积的比例则由1949年的1.19%上升到2002年的21.73%,主要是由于蔬菜面积的迅速增加而引起的。
短句来源
    The number of the variety planting area more than 667m~2 was 40,which was 48.2 percent of the total. The mean content of protein and oil were 39.9% and 20.97%,respectivly.
    播种面积在667 hm2以上的有40个,占总数的48.2%,蛋白质平均含量为39.9%,脂肪含量平均为20.97%;
短句来源
    2) Grain output development passed four phases. In the first phase (1949-1957), acreage under cultivation and planting area were main factors of the increase of grain output.
    2)粮食增长分为四个阶段:1949-1957年是以耕地面积和粮食播种面积扩大为主要增产因素的阶段;
短句来源
    According to Stat. : The planting area of rice in our country occupy 28.9% of it in the world . The overall output occupy primacy in all foodstuff.
    据统计,我国水稻播种面积约占全球粮食播种面积的28.9%,总产量居所有粮食作物的首位。
短句来源
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  sowing area
    the sowing area increased from 1200 mu in 1985 tomore than 120000 mu and the average yield per mu from 135 kg to 220.8kg thehighest got 510 kg.
    播种面积从1985年的1.2万亩增加到1987的12万亩左右,单产由135公斤增加到220.8公斤,最高亩产达到510公斤。
短句来源
    As a major grain-feed crop , corn has centuries-old cultivation history. Every year its sowing area is about 100'000 hm~2. But its yield is always low because of drought and low soil temperature in spring and summer.
    玉米作为主要粮饲作物在陇东具有悠久的种植历史,常年播种面积10万hm~2左右,但由于春夏干旱及地温较低等因素制约,产量一直处于较低水平。
短句来源
    The sowing area of soybean in Heilongjiang province accounts for 25% of the whole ares in the country.
    黑龙江省大豆播种面积占全国的25%。
短句来源
    ② the cropping system in Hebei is mainly characterized by two cropping a year and cropping systems are tending to be integrated and higher efficient. The planting index increase has resulted in the enlargement of crop sowing area by 1 51 million ha compared with that in 1952;
    ②全省稳定了以一年两熟为主体的熟制体系 ,种植模式向复合、高效发展 ,种植指数提高 ,相当于比 1952年扩大播种面积 151 1万hm2 。
短句来源
    Rice is the first cereal crop and contributes around 40% of the national grain production in China. The total yield and sowing area rank the first and second position in the world, respectively.
    水稻是我国第一大粮食作物 ,占我国粮食 40 %左右 ,其总产量与播种面积列世界第一、二位。
短句来源
  “播种面积”译为未确定词的双语例句
    Changes of the Rice-Seeded Area in Beijing and Tianjin Region during the Past 50 Years and Its Responses to the Changes of Precipitation
    京津地区近50年来水稻播种面积变化及其对降水变化的响应研究
短句来源
    4) The contribution of cropping index on grain output increase was from 47% to 81%, and it played an important role in regulation of planting structure.
    4)复种指数对粮食产量的贡献率从47%增加到81%,而1983年后复种指数增加的作物播种面积对种植业结构调整起了重要作用。
短句来源
    Winter wheat, as the main grain crop planted in the eastern part of Gansu, covers 35-40 thousand hm~2, 60%-65% of all crop planted area, half of the total production of crops.
    冬小麦是陇东地区的主要粮食作物,常年播种面积为35~40万hm~2,占粮食作物播种面积的60%~65%,产量占粮食作物总产量的一半以上。
短句来源
    But there is no subunits 5+10 in main cultivars grown in Heilongjiang province.
    但黑龙江省播种面积较大的主栽品种均不含有 5 + 1 0亚基 .
短句来源
    China is the largest wheat producer in the world. Wheat is the second leading cereal crop in China, with annual wheat area and production totaling 28 million ha. and 120 million tons.
    我国是世界上小麦生产大国,在我国小麦是仅次于水稻的第二大粮食作物,小麦年播种面积2800万公顷,总产量1.20亿吨。
短句来源
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  planting area
We describe the three dimensional variation in root length density (Lv) within a quarter of the planting area of Colombard grapevines on Ramsey rootstock grown under drip and full-cover microjet irrigation.
      
Under drip irrigation roots were concentrated under the vine row, whereas under microjet irrigation roots were evenly spread across the planting area.
      
Hybrid rice plays an important role in China's aim to improve rice production as it accounts for some 50% of rice planting area but produces about 60% of the total rice grain.
      
The possibility of frost protection by clearing the planting area of all scrub and grass is shown by the measurements at Emmen.
      
A planting area that is free of all plant competition is necessary.
      
更多          
  sowing area
The sowing area of early rice, single rice and late rice accounted for 37.3%, 20.4% and 42.3% respectively of the total rice planting area in 1998.
      
The sowing area decreased, reaching the 1913-lcvcl again only in 1925.
      


There are several patterns of double cropping in wheat fields in North China,relay-intercroppingand sequential cropping are two main patterns.On the basis of field experiments and investigationsfor a five year(1973~1978)period,an effort is made to discuss the utilization of solar energy,cropeompetion and yield analysis involved in these systems.As compared with sequential cropping,relay-intercropping has been found to be more effective inthe utilization of growth season and the resources of radiation,heat,and...

There are several patterns of double cropping in wheat fields in North China,relay-intercroppingand sequential cropping are two main patterns.On the basis of field experiments and investigationsfor a five year(1973~1978)period,an effort is made to discuss the utilization of solar energy,cropeompetion and yield analysis involved in these systems.As compared with sequential cropping,relay-intercropping has been found to be more effective inthe utilization of growth season and the resources of radiation,heat,and water in June and July,the values of dry matter,LAI,LAI-D,CGR,and E increase markedly.Under this system winterwheat can be sown at an optimum time,allowing a favorable growth of wheat plant due to marginaldominance.Instead of early-maturing hybrids of corn which must be adopted in sequential cropping,later-maturing and high yielding ones can be used.Under complicated and changeable natural condi-tions,relay intercropping can make full use of favourable climatic factors for plant growth and avoidor resist the unfavourabte ones.All these advantages of relay-intercropping could result in higher andmore stable yield for the whole year.However,there occur a series of intraspecific and interspecificcompetitions and machanization of farming become more diffcult.Sequential cropping is suitable for machanization.Since the crops are cultivated at the same timethere will be no interspecific competition.A uniform plant growth leading to a optimum density willbe more easily achieved.But there are still conditions of radiation,heat,and water not fully utilizedin summer,and occasional natural disasters are not easily avoided.

套种可争取季节,提高光、热、水的利用率。在华北复杂多变的自然条件下,套种可以趋利避害,产量较稳。但由此也产生了一系列种内和种间竞争,例如边行优势与减少播种行的矛盾、群体与个体的矛盾、共生期作物之间的矛盾等。这就需要从作物搭配、田间结构和水肥管理等方面予以调整。麦后复播便于机械化,同时不存在两种作物共生,没有种间竞争,易做到匀苗密植,保证播种面积。但复播作物对六、七月份光、热、水不能充分利用,同时华北地区遇旱涝、低温、病害等自然灾害机率较大。种植方式,决定于多种因素,故应强调综合研究,因地制宜、合理搭配,还要使机械化与种植方式相互适应。

Summer Seeding wheat planted on the hilly dry land in central part of shanxi, may utilize the good conditions of the abundant rainfall, higher temperature and sunshine of July, August and september. But only a few varieties can be adapted. The main varieties of summer seeding wheat recently released in the central part of shanxi province are: "Summer wheat no. 1"and"Shanxi spring wheatno.3". The total area under cultivation in 1981 was 684.4 mu, the average yield was 153 Jin/mu in Pingyao. The total area under...

Summer Seeding wheat planted on the hilly dry land in central part of shanxi, may utilize the good conditions of the abundant rainfall, higher temperature and sunshine of July, August and september. But only a few varieties can be adapted. The main varieties of summer seeding wheat recently released in the central part of shanxi province are: "Summer wheat no. 1"and"Shanxi spring wheatno.3". The total area under cultivation in 1981 was 684.4 mu, the average yield was 153 Jin/mu in Pingyao. The total area under cultivation in 1982. was 1389 mu, the average yield was190jin/mu, and the highest yield was 531.5Jin/mu in Yuci. For the conducted test in Yuci, we used 13 varieties in 1981, and 12 varieties in 1982, respectively, in order to determine the most productive varieties. The recently release cultivars which yielded more than the control weres "Inia×44". "3696", "80-1" and "7064". Those varieties increased the yield mostly through the increased number of heads, with the increase of a larger leaf area, fuller use of the solar energy, assimilate and accumulate more dry matter, and therefore increase the productivity directly. It is not possible to increase the yield on the basis of the number and weight of kernels alone, it is also necessary to breed multispike varieties. The yield component design is as follows: 20—25 ten-thousand heads per mu, 20kernels per spike, and a weight of 40—45grams/1000 kernels. If these conditions are met, a yield of 300 Jin/mu is Possible.

夏播小麦在海拔较高的山区丘陵旱地种植,可以充分利用七、八、九月雨水多、温度高、光照足的自然条件,扬长避短,发挥天时地利的优势;为改变我省旱地小麦产量长期低而不稳的局面,探索了一条新的增产途径。目前可利用适合夏播的小麦品种不多,主要的是夏麦1号(青春13×墨巴66)与晋春3号即忻春矮2号(咸农39×墨巴66),播种面积逐年扩大,1981年在平遥夏播小麦684,4亩,平均亩产153斤;最高亩产521斤。1982年在榆次县扩大面积1389亩,平均亩产190斤;最高亩产达到531,5斤。 1981年在榆次县选用13个品种(系),1982年选用12个品种,进行品种比较与区域试验。结果产量较高超过对照的有:伊尼亚×44,3696,80-1和7064等,主要增产原因是每亩穗数较多超过23万;每穗有20粒左右,千粒重达到40克以上。因为亩穗数增加,叶面积系数也相应大幅度增加,这样,从时间上和空间上充分利用太阳光能,同化积累更多的干物质;为获得高产奠定物质基础。多穗形品种的穗数增多,与产量提高密切相关。保苗增穗的主要途径有三:(1)窄行匀播,合理密植,增加基本苗。(2)种子处理,增强抗性;确保总茎数。(3)提高分蘖...

夏播小麦在海拔较高的山区丘陵旱地种植,可以充分利用七、八、九月雨水多、温度高、光照足的自然条件,扬长避短,发挥天时地利的优势;为改变我省旱地小麦产量长期低而不稳的局面,探索了一条新的增产途径。目前可利用适合夏播的小麦品种不多,主要的是夏麦1号(青春13×墨巴66)与晋春3号即忻春矮2号(咸农39×墨巴66),播种面积逐年扩大,1981年在平遥夏播小麦684,4亩,平均亩产153斤;最高亩产521斤。1982年在榆次县扩大面积1389亩,平均亩产190斤;最高亩产达到531,5斤。 1981年在榆次县选用13个品种(系),1982年选用12个品种,进行品种比较与区域试验。结果产量较高超过对照的有:伊尼亚×44,3696,80-1和7064等,主要增产原因是每亩穗数较多超过23万;每穗有20粒左右,千粒重达到40克以上。因为亩穗数增加,叶面积系数也相应大幅度增加,这样,从时间上和空间上充分利用太阳光能,同化积累更多的干物质;为获得高产奠定物质基础。多穗形品种的穗数增多,与产量提高密切相关。保苗增穗的主要途径有三:(1)窄行匀播,合理密植,增加基本苗。(2)种子处理,增强抗性;确保总茎数。(3)提高分蘖力,促进增加成穗数。单靠增加穗粒数与千粒重来提高夏播小麦产量,还有一定的局限性;而培育多穗型品种可能是主要方向。在多穗型的基础上,再选择大粒品种也是夏播小麦育种的一个重要目标。产量结构的设计是:每亩20——25万穗,每穗20粒,千粒重40——45克;亩产就可达到300斤左右。

Crop production is an economical and effective means of solar energy utilization. However. the efficiency of solar energy is still very low up to date. It is important to increase the utilization of solar energy in order to increase the yield of field crop. Such a way of improvement may be considered as the fundamental or basic factor in agricultural production. The present paper discusses the effect of increasing solar energy utilization in sugarcane in such measures as interplanting, sowing crops under sugar...

Crop production is an economical and effective means of solar energy utilization. However. the efficiency of solar energy is still very low up to date. It is important to increase the utilization of solar energy in order to increase the yield of field crop. Such a way of improvement may be considered as the fundamental or basic factor in agricultural production. The present paper discusses the effect of increasing solar energy utilization in sugarcane in such measures as interplanting, sowing crops under sugar cane, transplanting sugarcane seedlings, interplanting wheat and vegetables with sugarcane as well as planting cane cuttings after vegetable harvested.

作物生产是人类利用光能的一种经济有效的手段。然而,人们对阳光能的利用率迄今仍很低。所以,提高光能利用以增加作物产量,是农业生产的根本任务。本文讨论甘蔗育苗移栽和麦菜间作菜收后植蔗,对提高甘蔗以及其他与甘蔗轮、间、套种作物的光能利用之效应。研究表明,育苗移栽的甘蔗其茎高增加15.6厘米,茎径增加0.159厘米,每公顷有效茎数多6420条,所以,原料蔗茎产量增加13.66%,每公顷含糖量增加7.314吨,光能利用率增加0.0990~0.3795%。每公顷育苗移栽的甘蔗,农民收入增加870元,国家的利润约增加3000元。研究也表明,采用麦莱间作菜收后植蔗的办法,小麦按实际播种面积计算,每公顷增加736.5公斤,增产率达25%。此外,每公顷增收蔬菜15吨。由于蔬菜比小麦早收获一个多月,甘蔗可早种,又不受其他作物荫蔽,所以,茎高增加6.7厘米,茎径增加0.05厘米,每公顷有效茎数增加21930条,每公顷原料蔗产量增加27.588吨,增产率为24.70%。另外,间作物大豆也可以早播,每公顷增产429.17公斤。光能利用率合计增加0.3932%,农民每公顷利润增加1260~1290元。上述两种措施已由福建省科委...

作物生产是人类利用光能的一种经济有效的手段。然而,人们对阳光能的利用率迄今仍很低。所以,提高光能利用以增加作物产量,是农业生产的根本任务。本文讨论甘蔗育苗移栽和麦菜间作菜收后植蔗,对提高甘蔗以及其他与甘蔗轮、间、套种作物的光能利用之效应。研究表明,育苗移栽的甘蔗其茎高增加15.6厘米,茎径增加0.159厘米,每公顷有效茎数多6420条,所以,原料蔗茎产量增加13.66%,每公顷含糖量增加7.314吨,光能利用率增加0.0990~0.3795%。每公顷育苗移栽的甘蔗,农民收入增加870元,国家的利润约增加3000元。研究也表明,采用麦莱间作菜收后植蔗的办法,小麦按实际播种面积计算,每公顷增加736.5公斤,增产率达25%。此外,每公顷增收蔬菜15吨。由于蔬菜比小麦早收获一个多月,甘蔗可早种,又不受其他作物荫蔽,所以,茎高增加6.7厘米,茎径增加0.05厘米,每公顷有效茎数增加21930条,每公顷原料蔗产量增加27.588吨,增产率为24.70%。另外,间作物大豆也可以早播,每公顷增产429.17公斤。光能利用率合计增加0.3932%,农民每公顷利润增加1260~1290元。上述两种措施已由福建省科委组织技术鉴定,证明经济效果显著。已在全国主要蔗区推广。

 
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