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crop varieties
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  作物品种
     Study on the Synthetic Decision System for the Resistance of Crop Varieties to Aphid
     作物品种抗蚜性综合决策体系研究
短句来源
     There is a kind of negative correlation between competitive ability and productive performance in crop varieties.
     本项研究结果说明竞争优胜者并非是单播条件下产量性能更佳的品种,即作物品种的竞争能力与生产性能之间存在着负相关关系。
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     Programming for DTOPSIS Method and its Application in Appraising New Crop Varieties
     DTOPSIS法的程序设计及其在作物品种评价中的应用
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     The Analysis of Variance for Regional Tests of Crop Varieties (Continued)
     作物品种区域试验的方差分析(续)
短句来源
     The Analysis of Variance for Regional Tests of Crop Varieties
     作物品种区域试验的方差分析
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  农作物品种
     The Preliminary Exploration on Multifactorial Evaluation Crop Varieties′ Stability with Application of DTOPSIS Method
     DTOPSIS法在农作物品种稳定性综合评价上的应用初探
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     Application of Grey Relativity Analysis to Comprehensive Evaluation of Crop Varieties
     灰关联分析法在农作物品种综合评判中的应用
短句来源
     Application of General Linear Model to Analysis of Unbalanced Data from Regional Tests of Crop Varieties
     广义线性模型在农作物品种区域试验非平衡数据分析中的应用
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     Analysis of Main Crop Varieties and Qualities in Tibet
     西藏主要农作物品种品质分析研究
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     CROP VARIETIES INDUCED BY LASER IN CHINA
     我国激光育成的农作物品种
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  农业品种
     Discussion on Key Issues and Countermeasures in Novelty Search in Crop Varieties
     关于农业品种查新中的几个关键问题及解决策略
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  “crop varieties”译为未确定词的双语例句
     The mechanism of linear regression analysis, decomposing of Shukla interactive variance method, and AMMI model were introduced as crop varieties stability analysis methods in crop regional trials.
     介绍和比较了直线回归法、Shukla互作方差分解法和AMMI模型法在作物区域试验中分析品种稳定性的原理和方法,并以长江流域棉花品种区域试验的产量数据为实例,研究了3种方法对品种稳定性分析的效果。
     Waxy corn (Zea mays L.ceretina Kuiesh) is one of the new crop varieties that cultivated widely in Hainan recently years, but low yield due to extentive management.
     糯玉米(Zea mays L. ceretina Kuiesh)是海南近年广泛种植的作物新品种之一,但种植管理粗放,产量不高。
短句来源
     The innovations adopted by farmers in hilly area were mainly about crop production,to 85.26% of total innovations,especially crop varieties,to 68.2%.
     丘区农民采用的创新以种植业为主 ,占采用创新总数的 85.2 6 % ,尤其是种植业中的品种最多 ,占采用创新总数的 6 8.2 7%。
短句来源
     Main crop varieties Mira and 783-1 with 3 plant density treatmentswere used in the experiment and the results showed that the numbers of mainstems and tubers increased as the number of plants per unit area increased.
     主栽品种 Mira 和783-1各3种密度的试验结果表明,随着单位面积播种密度的增加,单位面积上的主茎数及块茎数目均增加,而块茎的平均重量及大中薯率则减少。
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     Crop varieties were tested to determine in which BS211 could colonize.
     测定了BS211菌的宿主范围。
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  crop varieties
Large-scale implementation of transgenic crop varieties raises concerns about possible nontarget effects on other organisms.
      
The results imply that the foraging success of natural enemies of pests can be enhanced by breeding for crop varieties that release specific volatiles.
      
The results are discussed in the context of the possibility of breeding crop varieties that are particularly attractive to parasitoids.
      
The hypothesis of biological simplification (genetic erosion) is tested with evidence from Andean agriculture, where farmers maintain a significant degree of crop diversity even as they adopt modern crop varieties.
      
Accumulation of metals (Cu, Fe, Mn, Cd, Cr and Pb) was estimated in the root, shoot and edible parts of different crop varieties grown in pot culture up to maturity and treated with industrial effluent.
      
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Based on the theory of fuzzy mathematics and in line with the actual problems in agricultural research, the article attempts to give a quantitative description of some fuzzy phenomena. The quantitative variation in the effects of different methods of fertilization is analysed by forming a membership function of fuzzy subsets. The similar relationship between different varieties is determined by calculating the normal neartude of growth characteristics of crop varieties. Through fuzzy clustering analysis,...

Based on the theory of fuzzy mathematics and in line with the actual problems in agricultural research, the article attempts to give a quantitative description of some fuzzy phenomena. The quantitative variation in the effects of different methods of fertilization is analysed by forming a membership function of fuzzy subsets. The similar relationship between different varieties is determined by calculating the normal neartude of growth characteristics of crop varieties. Through fuzzy clustering analysis, we classified numerically soil samples with a number of characteristic quantities. Using dynamic fuzzy clustering method, we also classified numerically the cold resistance of different varieties of rice. The major variety is selected through comprehensive assessment of the adaptability of different varieties of rice. The author believes that fuzzy mathematics will find wide use in agricultural science.

本文以模糊数学理论为基础,结合农业科学研究中的实际问题,试图使某些模糊性事物得到数量化描述。通过建立模糊子集的隶属函数,来分析不同施肥方式的效应之间的数量差异。通过计算作物品种生育特征的正态贴近度,来鉴定不同品种间的相似关系。应用模糊聚类分析,对包含多种特征量的土壤样品进行数值分类。还应用动态模糊聚类方法,对水稻不同品种的抗寒性进行数值分类。通过对不同水稻品种的适应性,进行综合评判,来选定主栽品种。笔者认为模糊数学在农业科学中得到广泛的应用是可能的。

1. Under different initial population densities, but under the same temperature, all population curves are similar. Only they differ in their levels.Under different temperatures, but under the same initial population density, the population curves rise much more steeply under higher temperatures.2. When comparing temperature with initial population density, temperature has much more influence on population developments.3. Within the whole range of simulated temperatures, if only the initial population density...

1. Under different initial population densities, but under the same temperature, all population curves are similar. Only they differ in their levels.Under different temperatures, but under the same initial population density, the population curves rise much more steeply under higher temperatures.2. When comparing temperature with initial population density, temperature has much more influence on population developments.3. Within the whole range of simulated temperatures, if only the initial population density can be well controlled, the whole growing season can be free of applying insecticides. Thus, breeding of "clean seedlings" and appropriate cultivation of crop varieties is the basis and clue of biological, chemical and integrated control of greenhouse whiteflies.4. Under medium infestations, one spraying cf pyrethrin or DDVP is sufficient, but costs more than smoking methods do because of more labour costs. Smoked DDVP costs less but one more application is required.5. Under heavy infestations, spraying of pyrethrin can have the least number of application, the lowest cost and the least number of application within the fruit gathering period. Advanced spraying (if only once) have no significant effect.

在系统调查的基础上,利用已有的种群动态的模拟模型,本文探讨了在可能的不同温度、不同初始种群密度的各组合下温室白粉虱(Trialeurodes vaporariorum)种群的动态及发生程度。 我国当前对温室白粉虱的防治手段仍以化学防治为主。本文也探讨了当必须防治时,如何最优地选择农药品种和施用方式以使打药次数最少、残留相对地最少和相对地最经济。从结果看,在模拟的温度参数范围内,只要很好地控制住初始种群密度,整个生长期中可以不用防治。因此,培育“清洁苗”,合理地选择作物品种(不易受侵染者)是进行化学防治以至生物防治和综合防治的关键。本文也给出了对中等发生和严重发生时采取不同防治策略的两个例子。

The new spring wheat variety "Jimai No.2 " has been developed from the composite cross (Luo 16×Longchun No.1) × Liaochun No.7 through many years evaluation. It gained higher yield than the control "Xinshuguang No.1" by 12.4% at 18 sites in the combined Regional Test for Dry-land Wheat Varieties from 1983 to 1985, ranking first among the entries evaluated. It also performed much better than the control(increasing yield by 15.4%) in the large scale production test in Qianguo and other three counties in 1985....

The new spring wheat variety "Jimai No.2 " has been developed from the composite cross (Luo 16×Longchun No.1) × Liaochun No.7 through many years evaluation. It gained higher yield than the control "Xinshuguang No.1" by 12.4% at 18 sites in the combined Regional Test for Dry-land Wheat Varieties from 1983 to 1985, ranking first among the entries evaluated. It also performed much better than the control(increasing yield by 15.4%) in the large scale production test in Qianguo and other three counties in 1985. After careful investigation and certification, Jimai No.2 was so named by the Evaluation Committee for Crop Varieties in Jilin Province. Jimai No.2 belongs to the variety erythro-spermum Korn with spring growth habit. It has a growing length of 82 days or so and develops slowly but steadily and strongly during prophase, with resistance to drought and salty-alkaline soil. The grain-filling rate of it is also very high with better quality for losing green color and humidity resistance during anaph It is resistant to many sorts of diseases such as Black loose smut of wheat, Black stem rust and tiller rust, and to Powder mildew and Foot root of wheat to some extent. To make use of its character of large spikes and grains, more fertile tillers and seeds,an appropriate planting density ought to be employed according to the soil fertility and moisture in a region. The cultivation with more fertilizer and water is not suitable, but multiple cropping is suitable after harvesting the crop of this variety.

“吉麦2号”是以(罗16×陇春1号)×辽春7号复合杂交育成。1983年—1985年吉林省春小麦新品种联合区域试验(旱作组)及1985年在前郭等4县生产示范试验中,平均比对照品种新曙光1号分别增产12.4%和15.4%,表现优良,增产显著。1986年3月20日经吉林省品种审定委员会审定,通过“农大836”为春小麦新品种,定名“吉麦2号”。确定在吉林省中、西部等旱种地区推广种植。“吉麦2号”属春性,出苗至成熟82天左右,生育前期生长稳健,抗旱和抗盐碱性土壤能力较强;生育后期灌浆速度较快,耐湿性强,成熟时落黄好;抗秆锈病和叶锈病,鞍抗散黑穗病,白粉病和根腐病发病轻。根据土地肥力与土壤水分状况切实掌握适宜密度,以充分利用该品种分孽力较强、成熟率高、穗大、粒多、粒重等特点获得好收成;不适于大肥大水条件栽培,是复种的较好前作物品种。

 
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