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planting
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  种植
    ON TOBACCO PLANTING AND CAPITALISM BUDDING IN CHINESE AGRICULTURE
    烟草种植与中国农业资本主义萌芽的关系
短句来源
    STUDIES ON THE BIOLOGY AND APPLICATION OF THE CROPPING SYSTEM ON THE UPLAND RED SOIL IN SOUTHEAST CHINA Ⅴ Studies on the Comprehensive design of planting grass and breeding livestock on the wasteslope of upland red soil
    中国东南部红壤旱地种植系统的生物学及其应用研究——Ⅴ红壤荒坡种草养畜的综合规划研究
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    The Applicable Effect of Ap-2 Aspergillus Niger Dissolve Phosphorus Microorganism in the Planting Tobacco
    Ap-2号溶磷菌Aspergillus niger在烟草种植上的应用效果
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    Research on the Planting Green Manure in the Eroded Granite Mountain District
    花岗岩侵蚀区山地绿肥种植试验研究
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    to develop diversified planting structure;
    发展多样化的种植结构;
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  栽培
    Application and Development of Crop Planting Expert System
    作物栽培专家系统的应用与发展
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    Research and Development of Cucumber Planting Management Multimedia Expert System Which is Based on Knowledge Rules
    基于知识规则的黄瓜栽培管理多媒体专家系统的研发
短句来源
    Source-Sink theory, advanced by Masan and Maskell in 1928, plays an important role in the studies on plant physiology, crop breeding and planting.
    Masan和Maskell(1928)提出的作物“源”(Source)和“库”(Sink)概念以及源库理论(Source-sink theory)是作物育种与栽培研究的重要内容。
短句来源
    The quantity of Bacillus in replanting 3 years's after mushroom planting was the lowest, and the ratio was 27.23%.
    连作3年后,取栽培后的土壤,测得的芽孢杆菌属细菌在所有处理中比例最低,为27.23%。
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    The result of study shows that under the traditional planting measures, the yield of winter wheat with underground film increased by 73.37 do compared with the contrasting field, the annual income increment is 2655.02$/hm 2, increment of water use efficiency is 81.25%.
    试验表明 ,在传统栽培措施下 ,利用地中膜种植的冬小麦与对照区冬小麦相比 :产量提高 73.3% ,每年增加收益2 6 55.0 2 $ /hm2 ,水分利用效率提高 81.3%。
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  种植业
    Ecological Function Analysis for Planting Subsystem in Xiaozhangzhuang Village of Yingshang County, Anhui Province.
    安徽省颖上县小张庄种植业子系统生态功能分析
短句来源
    THE APPLICATION OF FUZZY LINEAR PROGRAMMING IN THE OPTIMAL PROGRAMMING OF PLANTING OPERATIONS
    Fuzzy线性规划在种植业最优规划上的应用
短句来源
    EVALUATION AND ANALYSIS OF ENERGY CHANGE RATIO IN MODERN PLANTING EXAMPLE IN LUANCHENG COUNTY, HEBEI PROVINCE
    现代种植业系统能流转化效率分析及评价——以河北省栾城县为例
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    Emergy Analysis for Planting System of Guangdong Province
    广东省种植业系统能值分析
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    Non-linear system kinetics model analysis and application in planting industry
    种植业非线性系统动力学模型分析与应用
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  “planting”译为未确定词的双语例句
    Study on Brown Planthopper (Nilaparvata Lugens (St(?)l)) Disaster Analysis and Early-warning System in Rice Planting Region of China South and Its Application
    中国南方稻区褐飞虱灾变分析与预警系统的研究及应用
短句来源
    Application of Planting Grass Seed with Waterpower in the Control on Soil and Water Loss
    水力喷草技术在防治水土流失中的应用
短句来源
    Study on Controlling Soil and Water Loss and Planting Grass and Fish Culture in the Reservoirs
    水库种草养鱼与防治水土流失的研究
短句来源
    Soil Fertility in Repeated planting Cryptomeria fortunei Land.
    柳杉连栽林地的土壤肥力特性
短句来源
    A STUDY ON SOIL S DEFICIENT CRITICAL VALUE OF POT PLANTING EXPERIMENTS
    土壤盆栽试验硫的亏缺临界值研究
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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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Mechanical properties of soil including resistance to pressure, shearing, and deformation, internal pressure in relation to soil moisture content were studied with model experiment of paddy soils in rice stubble field and in wheat stubble field under laboratory condition. The mechanical strength of paddy soil in rice stubble field changed greatly with changing soil moisture content.This is due to a rapid development of attraction of molecular resulting from intensive shrinkage. Paddy soils in wheat stubble field,...

Mechanical properties of soil including resistance to pressure, shearing, and deformation, internal pressure in relation to soil moisture content were studied with model experiment of paddy soils in rice stubble field and in wheat stubble field under laboratory condition. The mechanical strength of paddy soil in rice stubble field changed greatly with changing soil moisture content.This is due to a rapid development of attraction of molecular resulting from intensive shrinkage. Paddy soils in wheat stubble field, however, were found to show less change in this respect. When soil moisture content was high, the internal friction of clay soil approached zero. Its shearing strength was effected by soil cohesion only and its internal friction increased with the change of texture from heavy to light. When soil moisture content dropped, the internal friction of all the soils studied increased rapidly and was effected by the strength of aggregates and the degree of roughness of the shearing surfaces. When soil moisture dropped to the lower part of plasticity, fragility of soil began to occur, but a certain degree of plasticity and viscosity still remained. Fragility may occur at high content of soil moisture to soils with light texture and weak arrangement. As the change of a soil from plastic to solid is a continuous process, a larger range of soil moisture content should be allowed for the demarcation between a plastic and a solid soil. Since the internal pressure of the paddy soil in rice stubble field increased rapidly upon decrease of soil moisture content, especially so in the case of clay paddy soil. Hence, for cultivation on such soils a higher optimum soil moisture content is suggested for the main purpose of tillage and to minimize soil plasticity and viscosity. On account of this, it is necessary to have the plow to form soil blocks of smaller primary shear planes, to have a higher speed of plowing, to have the land plowed twice, first far in advance of planting and then immediately before planting, and to have a larger contact surface between soil and tire so as to increase the draft force of the tractor.

在实验室条件下,模拟稻茬和麦茬两种土壤状况,研究了抗机械强度、变形性质和内压力三者与土壤含水量的关系。稻茬田土壤抗机械强度随含水量变化的曲线的坡度很大,麦茬田则较小。前者因强烈收缩使分子引力很快发展之故。粘质土壤的内摩擦力,在含水量大时接近于零,抗剪强度只决定于内聚力,质地变轻内摩擦力微有呈现。含水量降低各种土壤内摩擦力增加快,并受土壤剪断面的粗糙度和团聚体强度所影响。土壤含水量降低到塑性下部,土壤脆性开始形成,但仍有一定的塑性和粘滞性,土壤质地变轻及垒结疏松时,土壤的脆性能够在更高的含水量范围内产生。土壤塑性体与固体的转变是渐次过渡的,所以二者的分界应是一个较大的湿度范围。稻茬田土壤含水量降低内压力增加很快,特别是粘质水稻土。所以我们认为水稻土耕作时湿度不宜过低,克服水稻土的塑性和粘滞性是耕作上的首要任务。为此,犁要能使土壤形成较小的初剪面土块,耕速要大,在播种期前先耕翻,并于播种时复耕。同时为发挥机具的曳引力,其行走部分与土壤的接触面积宜大。

Field experiments concerning the effect of magnesium fertilizers on the growth and yield of soybean,peanut,rice and milk vetch(Astragalus Sinicus)were carried out on some upland and paddy soils derived from red clay and red sandstone in Kiangsi Province. Results revealed that an application of MgSO_4(at a rate of 15Kg Mg/hectare)to up- land soils could increase the yield of soybean and peanut to about 20%.In paddy soils,a better response to magnesium fertilizer was found in milk vetch than in the suc- ceeding...

Field experiments concerning the effect of magnesium fertilizers on the growth and yield of soybean,peanut,rice and milk vetch(Astragalus Sinicus)were carried out on some upland and paddy soils derived from red clay and red sandstone in Kiangsi Province. Results revealed that an application of MgSO_4(at a rate of 15Kg Mg/hectare)to up- land soils could increase the yield of soybean and peanut to about 20%.In paddy soils,a better response to magnesium fertilizer was found in milk vetch than in the suc- ceeding rice plants. Pot experiments were made in some important soil derived from various parent ma- terials in the red earth region of South China.In many soils the applications of magne- sium fertilizer markedly improved corn and millet in growth. Continuously planting corns up to 3—4 times in pot culture,the experiments showed that without a further supply of magnesium fertilizer would deprive available soil magne- sium and,consequently,the crops were stunted in growth with an appearance of serious magnesium deficiency. Probably owing to the correction of soil acidity,magnesium carbonate has a better effect on the strong acid soils than do the soluble magnesium salts,which are more effec- tive on the neutral to slightly acid soils.

根据三年来在江西红壤(母质为红色粘土及红砂岩红壤)旱地及水田中对早大豆、花生、早稻、晚稻及紫云英等进行的大田试验和对华中、华南红壤的主要类型进行的室内试验,红壤旱地有效性镁含量较低,豆科作物对镁肥的反应比较显著而稳定。每亩施用 Mg素2斤(用硫酸镁),早大豆、花生等可增产20%左右。增产效果因土壤肥力而不同。在水田中,对紫云英的效果较好,对水稻的效果较低。室内试验表明,在多数土壤上镁肥效果显著,玉米与小米对镁肥反应良好,并且在单独施用氮、磷、钾等化肥的条件下,随着作物种植次数的增加,土壤镁素逐渐耗竭,镁肥的效果愈来愈大。难溶性镁肥在酸性红壤上的效果很好,但在接近中性的红壤旱地上,最好施用速效性镁肥以保证作物苗期的镁素供应。

Ammonium bicarbonate, still being one of the main nitrogen fertilizers at present time in China, is easily volatilizable in soils. Various field experiments as well as practices have repeatedly shown that, if prilled and applied beneath the soil surface about 6 cm, its effect on the growth of crops will be markedly increased. In order to get some idea about the mechanism involved in its beneficial effect, the present study was undertakers. Experiments were carried out in pots under greenhouse conditions as well...

Ammonium bicarbonate, still being one of the main nitrogen fertilizers at present time in China, is easily volatilizable in soils. Various field experiments as well as practices have repeatedly shown that, if prilled and applied beneath the soil surface about 6 cm, its effect on the growth of crops will be markedly increased. In order to get some idea about the mechanism involved in its beneficial effect, the present study was undertakers. Experiments were carried out in pots under greenhouse conditions as well as in the paddy field using N~(15)-tracer technique. The following is a summary of the results.1. When ammonium bicarbonate was prilled and deeply applied to the soil, much more total available nitrogen as well as ammonium nitrogen alone were found in the soil throughout the growing season, as compared with the surface-application of the powdery form. Neither surface application incorporation of the powdery fertilizer into surface soil have hardly matched with it in these respects.2. As compared with the powdery fertilizer applied in the conventional way, the deeply applied ammonium bicarbonate prills showed its fertilizing effect quite slower but rather steadier and hence lasting longer. The improved nitrogen supplying status of the soil resulted in a greater amount of nitrogen assimilation and dry matter production with an apparent strengthening of the over-all growth vigor of the rice plants.3. With high rates of fertilization (corresponding to 130 catties/mow), and under dense planting conditions, the nitrogen recovery of the deeply applied ammonium bicarbonate prills as calculated from the amounts of labelled nitrogen (N~(15)) found in the adjacent rice plants around the site of application, amounts to 75.5±3.4%, which constitutes more than half of the total nitrogen in the rice plants (i. e. 54.6±1.8% of the total nitrogen, to be exact). On the other hand, the nitrogen recovery of the powdery fertilizer applied in the conventional manner is generally much lower as has been widely reported. The difference in their recovery perentages may be ascribed mainly to the difference in their volatilization losses of ammoniacal nitrogen. Besides, the differences in their amounts of ammonium ion fixed by the soil, immobilization of available nitrogen by rhizosphere microorganisms, as well as the accessibility and availability of the fertilizer nitrogen to the plant roots may also bear some effects on their nitrogen recovery rates. Just to what extent each of these factors contributes to the total effects is yet to be illucidated by further experimentation.4. Under field conditions with a planting space of 10×10 cm. between hills, the nitrogen released for absorption from ammonium bicarbonate applied deeply in the center of space can only be accessible to the four rice plants around the site of application. This amounts to over 90% of the total nitrogen released for absorption from the fertilizer as shown by the N~(15)-tracer experiment.

通过盆栽试验和田间N~(15)同位素试验,研究了碳铵粒肥在水田深施的氮素供应状况。结果表明,在碳铵粒肥深施情况下,土壤氮素总供应量在整个水稻生长期中,土壤NH_4-N量和速效氮量在施肥后持续30天的时间内,均显著高于粉肥表施和粉肥混施。粒肥深施对水稻的供氮特点是缓、稳、长,这反映在不同时间水稻的氮素积累量、干物质积累量和长势的变化上。粒肥深施明显地增进了水稻对肥料氮素的吸收。通过N~(15)的田间示踪试验表明,即使在重肥条件下,水稻对深施碳铵粒肥的氮素利用率也高达75.5±1.8%,水稻总积累氮量中有54.6±3.4%是来自于深施碳铵粒肥的。深施碳铵粒肥在田间的有效供肥范围为施肥点四周的第一圈稻株,约占碳铵总供肥量的90%以上,而第三圈已完全无效。

 
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