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rotation system     
相关语句
  轮作体系
     N_2O Flux and CH_4 Uptake of Soil in Winter Wheat and Summer Maize Rotation System
     冬小麦/夏玉米轮作体系农田土壤N_2O排放和CH_4吸收特征
短句来源
     By comprehensive analysis of yield and benefit,the better rotation system was: Soybean 一Sugarbeet(Flax)一Maize,or Soybean一Sugarbeet一Maize一Wheat.
     从产量和效益综合分析,较好的轮作体系应为:大豆一甜菜(亚麻)一玉米,或大豆一甜菜一玉米一小麦。
短句来源
     In the current spring wheat and field pea rotation system, the combined crop yields reached 3 420 kg/hm2 and water use efficiency 8.11 kg/(hm2·mm) on the no-tillage with straw cover treatment, which was 26.81% and 25.39% higher than conventional tillage treatment, respectively.
     在春小麦豌豆轮作体系中免耕秸秆覆盖处理的作物产量(春小麦+豌豆)及水分利用效率分别为3420kghm2和8.11kg(hm2·mm),较常规耕作分别提高26.81%和25.39%。
短句来源
     The soil in winter wheat and summer maize rotation system in the North China Plain was a net sink of CH4. Under conventional N fertilization and irrigation condition, CH4 uptake during the measuring period in 2001-2002 and 2002-2003 were 2303 g C hm-2 and 1468 g. C hm-2, respectively .
     冬小麦/夏玉米轮作体系农田土壤是CH_4的净吸收库,2001-2002和2002-2003两个轮作周期内测得的CH_4的吸收量分别为2303 g C hm~(-2和)1468 g C hm~(-2)。
短句来源
     4) In winter wheat and summer maize rotation system, the residual nitrogen after wheat harvest should be taken into consideration when fertilizing on following summer maize.
     4)土壤残留无机氮的利用能极大地提高肥料利用率,在冬小麦/夏玉米轮作体系中,夏玉米生长季氮肥的优化施用应充分考虑前茬作物冬小麦收获后的土壤残留无机氮量。
短句来源
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  轮作制
     Study on the Utilization of Straw Potassium and Chemical Potassium in Rice-wheat Rotation System
     稻麦轮作制中秸秆钾与化肥钾利用的研究
短句来源
     The results indicated that in a typical corn wheat rotation system,S output by the crop products was 26.4 kg·hm -2 ,and 6.8 kg·hm -2 of S was returned to the soil through root and plant residues.
     结果表明 ,在我国北方普遍推行的小麦 玉米轮作制中 ,作物收获物从土壤中攫取的硫素总量为每年2 6 .4kg·hm-2 ,由根系和植物其它残留物归还给土壤的硫素为每年 6 .8kg·hm-2 ;
短句来源
     A Free-Air Carbon Dioxide Enrichment(FACE) system and root-isolation methods were used to study the effects of elevated atmospheric pCO2 and nitrogen fertilisation on rhizospheric and soil respiration,determined by in situ IRGA(LI6400) measurements,during the growth of wheat(Triticum aestivum L.cv Yangmai 14) between 106 and 183 days after germination in a wheat/rice rotation system.
     依托FACE(free air carbon dioxide enrichment)技术平台,利用阻断根法,采用LI6400红外气体分析仪(IRGA)-田间原位测定的方法,研究了大气CO2浓度升高和不同氮肥水平对水稻/小麦轮作制中冬小麦旺盛生长期间根际呼吸的影响。
短句来源
     It was shown by the 11 years experiment that one kg P_2O_5 can increase 14.9kg wheat and7.1kg maize in wheat-maize rotation system in Guanzhong irrigation area. The phosphorus utilization effi-ciency is as high as 25.6%, It is more efficient in this system than in maize only.
     11年定位研究表明,在关中灌区土的小麦、玉米轮作制中,将磷肥施于小麦,每kgP_2O-5平均增产14.9kg,后作玉米平均增产7.3kg,磷肥利用率达25.6%,比等量磷肥施于玉米的增产效益高。
短句来源
     The effects of chemical nitrogen, phosphorus and potassium fertilizer and manure on soil fertility were investigated in a long-term fertilizer experiment for 27 seasons during ten years from 1985 to 1994 in a rice-rice-wheat rotation system The results from regression analysis indicated that the organic fertilizer significantly increased soil organic matter, both of total N, P and available N, P, K;
     本文对1985~1994年持续27季稻-稻-麦轮作制下不同氮、磷、钾化肥和有机肥用量定位试验中20个不同施肥处理土壤作了肥力测定,采用回归分析法研究了长期施用化肥及有机肥对土壤肥力的影响。
短句来源
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  轮作
     N_2O Flux and CH_4 Uptake of Soil in Winter Wheat and Summer Maize Rotation System
     冬小麦/夏玉米轮作体系农田土壤N_2O排放和CH_4吸收特征
短句来源
     By comprehensive analysis of yield and benefit,the better rotation system was: Soybean 一Sugarbeet(Flax)一Maize,or Soybean一Sugarbeet一Maize一Wheat.
     从产量和效益综合分析,较好的轮作体系应为:大豆一甜菜(亚麻)一玉米,或大豆一甜菜一玉米一小麦。
短句来源
     Soil CO_2 Emission and Carbon Balance in the Winter Wheat-Summer Maize Rotation System
     冬小麦、夏玉米轮作农田土壤CO_2释放与碳平衡的研究
短句来源
     A field experiment was conducted in rice-wheat rotation system to study effect of application of wheat straw and nitrogen fertilizer in rice-growing season on N2O emission from following wheat-growing season at Yixing of Jiangsu province in 2003—2004. Two levels of wheat straw application (0 and 3.75 × 103 kg/hm2) and three levels of nitrogen fertilizer application (N 0, 200 and 270 kg/hm2) were adopted in experiment.
     2003─2004年选用江苏省宜兴市稻-麦轮作试验田,研究了水稻生长季秸杆(0和3.75×103kg/hm2两个水平)和N肥施用(N0、200和270kg/hm23个水平)对后续麦季N2O排放的影响。
短句来源
     In the current spring wheat and field pea rotation system, the combined crop yields reached 3 420 kg/hm2 and water use efficiency 8.11 kg/(hm2·mm) on the no-tillage with straw cover treatment, which was 26.81% and 25.39% higher than conventional tillage treatment, respectively.
     在春小麦豌豆轮作体系中免耕秸秆覆盖处理的作物产量(春小麦+豌豆)及水分利用效率分别为3420kghm2和8.11kg(hm2·mm),较常规耕作分别提高26.81%和25.39%。
短句来源
更多       
  轮作系统
     Nitrification-Denitrification Lo ss and N_2O Emission from Maize-Wheat Rotation System in North China
     玉米-小麦轮作系统中氮肥反硝化损失与N_2O排放量
短句来源
     Results showed that ammonia volatilization could be obviously reduced under the rice-wheat rotation system by optimizing fertilization, N loss through ammonia volatilization accounted for 7.05% ± 1.37% and 9.81% ± 0.38%, respectively, of the total N applied for optimized and traditional ways of fertilization.
     结果表明,优化施肥能明显降低稻-麦轮作系统中的氨挥发损失,在整个稻麦轮作体系中,优化和习惯的氨挥发损失占N肥施用量的百分比分别为7.05%±1.37%和9.81%±0.38%。
短句来源
     A field trail was conducted to determine the effects of conventional tillage(T1), conventional tillage with stubble retention(T2), no tillage(T3) and no tillage with stubble retention(T4)treatment on crop yield and soil oxdizible organic carbon within maize-wheat-soy rotation system in the western Loess Plateau.
     在陇东黄土高原定位研究了玉米-冬小麦-大豆轮作系统中4种耕作处理:传统耕作(T1)、耕作覆草(T2)、免耕(T3)和免耕覆草(T4)对作物产量和表层土壤有机碳的影响。
短句来源
     Compared to the chemical fertilizer treatment,accordingly,organic material combined with chemical fertilizer application in rice season increased climatic impacts from CH_4 and N_2O emissions in a rice-winter wheat rotation system.
     因此,稻田基施不同种类有机物料都相应地增加稻麦轮作系统CH4和N2O排放的综合温室效应.
短句来源
     Rhizosphere Effects in Ryegrass Rice Rotation System 3 The Effects of the Root of Ryegrass to Soil Biological Character
     “黑麦草-水稻”草田轮作系统的根际效应3.黑麦草根系对土壤生物性状的影响
短句来源
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  rotation system
We describe other modifications to our rotation system that have reduced the required maintenance and improved the smoothness of the rotation and present data showing how vibrational and heating effects vary with rotation speeds up to 0.24 Hz.
      
The Lorentz equation and the Bargmann-Michel-Telegdi equations are generalized for the rotation system.
      
Charged particle beam axis displacement and rotation system based on rigid focusing principle (numerical calculation)
      
The site has been used since 1997 to investigate the relative effect of inorganic versus organic fertilizer (liquid hog manure; LHM) applied at rates (70 kg N ha-1) on NO3--N leaching from a carrot rotation system.
      
This increasing frequency of the leguminous host in the rotation system may be associated with increased root rots in legumes in the current pasture-crop rotations.
      
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