助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   cold district 在 农作物 分类中 的翻译结果: 查询用时:0.206秒
图标索引 在分类学科中查询
所有学科
农作物
建筑科学与工程
水利水电工程
更多类别查询

图标索引 历史查询
 

cold district
相关语句
  “cold district”译为未确定词的双语例句
    By analysing the ecological factors of physical geography in the northwest of Hebei Province, the ecotypes of this region were classified in this paper. They were warm district, warmer district, cool district and cold district. Objectives and requirements for the ecological breeding of corn in each district were also put forward.
    本文通过对冀西北地区自然地理生态因素的分析,对该区生态型进行了分类,划分为暖区、较暖区,冷凉区和高寒区,提出了各生态区玉米育种的目标要求,并对该区生态育种中的几个关键性问题进行了详细阐述。
短句来源
    Jilin province belongs to cold district for rice plant. Because of its low temperature and short frostless period,25 percent areas are suitable for planting middle or early maturing variety.
    吉林省属寒地稻作区,由于气温低、无霜期短,有25%的面积适合种植中早熟品种.
短句来源
查询“cold district”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  cold district
MD phytoplasma was detected in the root of all MD-diseased trees collected from overwintering to before sprouting in the cold district; however, it was not always found in winter buds of the same trees.
      


The research was taken at the branches of A.I.C.Company of Daqing petroleum Bureau between 1991~1992, based on the prepared test in 1990.The bed culture of corn was practised with improved film-layiny machine bedding meanwhile covering film on flat field.The width of the bed was about 1.2m.There were two rows on each bed, with a 40~50cmrowledge.The spacing between beds was 75~80cm.Compared with the 70cm ridge culture,the new way of culturing can make theplants have a favour close spacing (increase about 30%),give...

The research was taken at the branches of A.I.C.Company of Daqing petroleum Bureau between 1991~1992, based on the prepared test in 1990.The bed culture of corn was practised with improved film-layiny machine bedding meanwhile covering film on flat field.The width of the bed was about 1.2m.There were two rows on each bed, with a 40~50cmrowledge.The spacing between beds was 75~80cm.Compared with the 70cm ridge culture,the new way of culturing can make theplants have a favour close spacing (increase about 30%),give a good ventilation to the field, enlarge leaf area index, make good uses of light,heat and fertilizer and make the most of the film-mulching work.The results showed that the bed culture could attain high yield:12544.5kg/ha.in averaye and 14887.5kg/ha.in the highest on 200ha area for two years. The output increased by 35.2% in average and 53.4%in the highest than that of regular ridge cultune.The income increased by 1284 /ha.Thenew technology for corn growing is easy to deal with and is scientific and useful.The bed culture is the advanced way for corn to get high yield in the North and cold districts.

此项研究是在1990年预备试验的基石出上,于1991~1992年在大庆石油管理局所属各农工商分公司进行的,所谓玉米畦作是在土壤整平的基础上,运用配套畦作覆膜机在覆膜的同时做畦子。畦宽1.2米、畦上双行,畦上行距40~45厘米,畦间行距75~80厘米。与70厘米垅作相比,具有合理密植(可以提高密度30%左右),增强田间通透性,提高对面积指数,可以充分利用光、热、土壤肥力等自然资源,充分发挥覆膜增产潜力。试验结果表明:畦作覆膜产量高,两年200公顷,平均亩产836.6公斤,最高亩产992.5公斤,平均比垅作增产35.2%,最高增产53.4%。亩增收85.6元,并且,这种栽培方法容易操作,具有一定的科学性和实用性,是目前北方高寒地区玉米再高产的新途径。

By analysing the ecological factors of physical geography in the northwest of Hebei Province, the ecotypes of this region were classified in this paper. They were warm district, warmer district, cool district and cold district. Objectives and requirements for the ecological breeding of corn in each district were also put forward. Key questions on ecological breeding in this district were discussed.

本文通过对冀西北地区自然地理生态因素的分析,对该区生态型进行了分类,划分为暖区、较暖区,冷凉区和高寒区,提出了各生态区玉米育种的目标要求,并对该区生态育种中的几个关键性问题进行了详细阐述。

Based on field experimental data of Heping Experiment Station in Heilongjiang Province,the disciplinarians of diurnal change and variation in whole growing season of rice stomatal resistance in cold district of China were studied and its vertical variation in different layers of canopy were analyzed as well.The relationships between stomatal resistance and temperature,leaf-air temperature difference,soil moisture,relative humidity,light intensity and vapor pressure deficit were discussed.The results show...

Based on field experimental data of Heping Experiment Station in Heilongjiang Province,the disciplinarians of diurnal change and variation in whole growing season of rice stomatal resistance in cold district of China were studied and its vertical variation in different layers of canopy were analyzed as well.The relationships between stomatal resistance and temperature,leaf-air temperature difference,soil moisture,relative humidity,light intensity and vapor pressure deficit were discussed.The results show that the diurnal change disciplinarians of stomatal resistance are not the same in different growing stages.The variation in the whole growing season exhibits a relationship of polymodal curve.The stomatal resistance is small in the period of jointing-booting and earlier ear sprouting-boom,but it reaches the peak in the period of later ear sprouting-boom and milk.The stomatal resistance of rice leaves increases from upper layer to lower layer gradually in the period of jointing-booting,but in the later growing period it changes inversely.The factor analysis indicates that water plays the most important role,it included in the factors such as relative humidity,vapor pressure deficit and soil water.The influences of temperature and light are relatively small.The stomatal resistance is negatively correlated with relative humidity,soil moisture,leaf-air temperature difference and light intensity and positively correlated to vapor pressure deficit and temperature.

根据黑龙江省中心站和平试验站的现场试验资料,研究了寒区水稻不同生育阶段气孔阻力日变化、全生育期变化,分析了冠层内不同层次叶片气孔阻力垂直变化规律,探讨了气孔阻力与空气湿度、饱和水汽压差、土壤含水率、空气温度、叶室温度、叶气温差、光照等环境因素间的关系。采用偏最小二乘回归方法建立了气孔阻力对环境因子的响应模型。结果表明,不同生育期气孔阻力呈现不同的日变化规律。全生育期气孔阻力变化规律呈现多峰曲线,拔节孕穗期和抽穗开花前期气孔阻力值较小,而抽穗开花末期和乳熟期出现峰值。拔节孕穗期气孔阻力值从上层叶片向下层叶片逐渐增大,后期从上层到下层逐渐减小。对影响水稻气孔阻力的各因素进行因子分析,由空气湿度、饱和水汽压差和土壤含水率组成的“水分因子”为第一主因子,与气孔阻力相关性最为显著,而“温度因子”和“光照因子”对寒区水稻气孔阻力的影响则相对较小;水稻气孔阻力与相对湿度、土壤含水量、叶气温差和光强呈现负相关,与饱和水汽压差、温度呈现正相关。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关cold district的内容
在知识搜索中查有关cold district的内容
在数字搜索中查有关cold district的内容
在概念知识元中查有关cold district的内容
在学术趋势中查有关cold district的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社