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土壤基础肥力
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  soil basic fertility
     Wanmai38, strong gluten wheat, was taken as an experimental material to study the effect of soil basic fertility and nitrogen application methods on grain yield and quality.
     以优质强筋小麦皖麦38为材料,研究土壤基础肥力和氮肥施用量、基追比例和追氮时期对强筋小麦籽粒产量和品质的影响,分析了产量和品质的关系。
短句来源
     SOIL BASIC FERTILITY ANALYSIS AND THE SUGGESTION OF FERTILIZATION AND UTILIZATION ABOUT OUR COLLEGE FEILD
     我校大田土壤基础肥力状况的分析及培肥利用途径
短句来源
     Effects of Soil Basic Fertility and Fertilizer and Water on Yield and Quality and Nitrogen Content and Nitrate Reductase in Leaf in Spring Wheat
     土壤基础肥力和肥水运筹对春小麦产量和品质及植株氮素状况的影响
短句来源
     Effects of Soil Basic Fertility and Nitrogen Application on Grain Yield and Quality of Strong Gluten Wheat
     土壤基础肥力和氮肥运筹对强筋小麦产量和品质的影响
短句来源
  basic soil fertility
     Among fertility factors of leading to yield increase in the process of producing hybrid maize seeds, the contribution of basic soil fertility to yield accounts for 40%, and contribution of fertilizer accounts for 60%.
     在玉米杂交制种增产的肥力因素中,土壤基础肥力贡献占40%,肥料贡献占60%。
短句来源
     Continuously combined application of organic manure with chemical fertilizer for several years increased the supply of nitrogen, phosphorus and potassium from soil, especially raised the proportions of organic matter and available phosphorus and potassium, which coodinated the supply of soil nutrients, improved the effect and utilization percent of fertilizer application, and reduced the crop yield difference caused by basic soil fertility.
     连续多年的有机无机肥结合施用,增加了土壤氮、磷、钾养分的供应量,特别是提高了土壤有机质和速效磷、钾的比例,协调了土壤养分的供应,提高了施肥效应和化肥利用率,缩小了土壤基础肥力对作物产量的差异。
短句来源
  “土壤基础肥力”译为未确定词的双语例句
     EVOLUTION FEATURES OF BASIC FERTILITY ELEMENTS IN SHANGHAI FARMLAND SOILS
     上海市农田土壤基础肥力元素演变特征
短句来源
     By investigation for fertilizer application rate in 253 field of maize in 1997&1998,N&P action equation for high,medium and low soil fertilizer are established as =b 0+b 1N+b 2P+b 11 N 2+b 22 P 2+b 12 NP.
     通过 1997、1998两年对全市各县 2 5 3块玉米田的施肥量调查 ,建立了低、中、高三类土壤基础肥力产量目标函数的氮、磷效应模型 ^Y =b。 +b1N +b2 P +b11N2 +b2 2 P2 +b12 NP ,据此求出最大产量的最大施肥量及经济最佳施肥量。
短句来源
     By investigation for fertilizer application rate in 274 field of maize in 1995&1996,N&P action equation for high,medium and low soil fertilizer are established as =b 0+b 1N+b 2P+b 11 N 2+b 22 P 2+b 12 NP. Maximum and optimal N&P fertilizer application rates can be calculated by these equations.
     通过 1 995及 1 996两年对全市各县 2 74块的玉米施肥量调查 ,建立了低、中、高三类土壤基础肥力产量目标函数的氮、磷效应模型 y=b0 +b1 N+b2 P+b1 1 N2 +b2 2 P2 +b1 2 NP,据此求出最大施肥量及经济最佳施肥量。
短句来源
     But the length of time, within which soil organic matter content reached equilibrium, and the rate of accumulation of soil organic matter were different owing to different measures adopted in the same conditions of climate, basal soil fertility and soil texture.
     在相同的气候,土壤基础肥力,土壤质地条件下,采取不同措施,土壤有机质积累速率不同,到达土壤有机质平衡含量的时间不同。
短句来源
     From the point of view of soil ecological environment concerning retention ofsoil basal fertility,conversion of farmland nutrients,absorption of nutrients by rice plants andeffect of increasing rice output,four types of paddy soils in Shanghai suburbs were selected assampling points in orientation tests for investigating the evolution of soil ecologicalenvironment in zero-tillage and shallow-ploughing rice fields after wheat cropping.
     本研究从土壤基础肥力保持,农田养分转化,植物养分吸收和水稻增产效果的土壤生态观点出发,选择了上海郊区四种不同土壤类型的水稻土作为麦后免耕与浅耕农田生态环境演变研究定位试验的样点。
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  basic soil fertility
However, it is always best to supply adequate amounts of these nutrients through your basic soil fertility program.
      


In this paper the soil considered as an open irreversible nonequilibrium systems, substances may be added or removed from it,that might be necessary to have energy flowing through the systems during substances conversion process is occured.The concept of entropy produced in systems which is the site of these irreversible processes plays an important role in nonequilibrium thermodynamics.However, the dissipative fraction of the energy during per unit substance conversion in fertility processes may be recognized...

In this paper the soil considered as an open irreversible nonequilibrium systems, substances may be added or removed from it,that might be necessary to have energy flowing through the systems during substances conversion process is occured.The concept of entropy produced in systems which is the site of these irreversible processes plays an important role in nonequilibrium thermodynamics.However, the dissipative fraction of the energy during per unit substance conversion in fertility processes may be recognized as the entropy of the soil systems.Consider,for example, organic matter or humus is an important energy source material in the soil and the nitrogen content in it which varies in a given range is the characteristic property of the energy soarce material.Decomposition of a given material would result in mineralization of a given available nitrogen content which is absorbed by green plants to formed a given crop yield, in humus decomposition processes, energy released, we may look this process as the energy flowing through the systems.A fraction of the total energy is supposedly available for converting to useful work it should be noted that it is the free energy which forms the energy amount of the crop yield, another fraction of the total energy would become a state of dissipation which was dissipaed by "friction".If the total energy comes from the organic matter decompostion minus the free energy that forms the crop yield energy, then it is divided by the released available nitrogen content per unit area, the result of this caculation may be recognized as the iutial entropy of he soil systems. As the chemical nitrgen fertilizer was added into the soil systems, the soil systems state would be changed and would produce a change in entropy.we could caculate the change of the entropy.The total entropy of the whole systems may be defined as the sum of the intial entropy and the change of the entropy,it is a complex index which measure the degree of order or the fertility of the soil systems.The high yield of soils and the the high chemical fertilizer conversion rate leads to a decrease of soil systems entropy.

本文根据耗散结构理论提出表征土壤肥力的土壤系统熵的概念,其定义是土壤系统中单位物质转化过程中的势能耗损。对应Schrodinger的负熵理论,土壤系统熵越低,土壤肥力越高。土壤系统熵可分为两部分,一是表征土壤基础肥力的,命名为起始熵(S_0)。另一是表征土壤人工肥力的,指因化学氮素投入所引起系统状态的变化,称为熵变(S_1),土壤系统熵(S_E)是两部分之和:S_E=S_0+S_1是土壤生产力和系统转换效率的综合指标。土壤系统熵值有稳定性,可作为土壤分类的依据。因为熵值计算排除了空间条件和不同作物种类与其它偶然因素对评价土壤肥力的影响,因而可供比较应用。土壤系统熵既反映了系统的结构状态,也反映了输入能量的可用程度,因此是土壤做为一个耗散结构的基本性质指标,从而实现了土壤肥力评价中的生态效率和经济效益的结合,并且为系统论土壤学的研究对象提供了认识的基础。土壤系统熵和土壤信息量有同等意义,是对土壤系统进行最优化反馈控制的依据。文中列举了土壤系统熵的计算方法,并讨论了它的实际应用。

Amount of N fixed of soybean-nodule bacteria was estimated by an value method in three major soils ( planpsol soil, black soil, light chernozem) of Jilin province and on fourteen soybean cultivars growing on black soil. It was proved that the amount of N fixed from atmosphere accounted for 50-75% of the total N of soybean, and the highest is in black soil the lowest is in light chernozem. On black soil the N2 fixation is amounted approximately to 13 jin/mu. Under condition of a great deal organic manure application,...

Amount of N fixed of soybean-nodule bacteria was estimated by an value method in three major soils ( planpsol soil, black soil, light chernozem) of Jilin province and on fourteen soybean cultivars growing on black soil. It was proved that the amount of N fixed from atmosphere accounted for 50-75% of the total N of soybean, and the highest is in black soil the lowest is in light chernozem. On black soil the N2 fixation is amounted approximately to 13 jin/mu. Under condition of a great deal organic manure application, percentage of N-fixation in light chernozem is outstandingly increased. It shows that basic fertility plays an important part in N-fixation of nodule bacteria. The fact that the difference of N-fixation of different soybean cultivars are very obvious; the range is 4E-100kg/ha. This demonstrate the potentiality of selecting high N-fixation soybean cultivars is very important.In consideration of the quality of grain, the price of product and reducing fertilizer and soil management etc, in this paper we discussed the cost of economic benefit of developing soybean industry. In accordance with result of research and present status of soybean plantation, this paper offered specific proposal for increasing area of soybean in Jilin province.

用A_N值法测定了吉林省三种主要土壤(白浆土、黑土、淡黑钙土)上和14个大豆品种在黑土上的大豆—根瘤菌共生固氮量。查明大豆从空气中固定的氮量占植株全氮产量的50—70%,以黑土为最高,淡黑钙土最低。在黑土上,每公顷约可固氮98公斤。在施用大量有机肥条件下,淡黑钙土上的固氮百分率也显著提高。说明土壤基础肥力对根瘤固氮起重要作用。不同大豆品种的固氮量差异很大,在45公斤—100公斤/公顷之间。说明选育高固氮品种的潜力很大。除固氮外,大豆可通过根、叶,每年向每公顷土壤归还氮素26公斤,针对重玉米轻大豆的现状,通过和玉米比较,从粮食品质、产品价格、节约化肥(能源)、培养地力等方面,讨论了发展大豆的经济效益,建议在白浆土地区大豆面积恢复到30%,黑土地区20%,淡黑钙土地区10%,1990年前全省增加大豆440万亩。由固氮和节约氮肥共计相当标准氮肥15.1万吨。可获总经济效益近两亿元。

Studies on the production and appearance at rip(?)ing stage of high yield winter wheat were made from 1982 to 1986, under different amount and different growth stages of fertilizer application. The results are as follows. When the nitrogen fertilizer (ammonium sulphate) applied, more than 70 kg per mu before the jointing stage, thc population was over-luxuriant at earlier growth period and easily falling over at later period, the wheat was still green at normal harvesting stage and appeared to be late rip—ening,...

Studies on the production and appearance at rip(?)ing stage of high yield winter wheat were made from 1982 to 1986, under different amount and different growth stages of fertilizer application. The results are as follows. When the nitrogen fertilizer (ammonium sulphate) applied, more than 70 kg per mu before the jointing stage, thc population was over-luxuriant at earlier growth period and easily falling over at later period, the wheat was still green at normal harvesting stage and appeared to be late rip—ening, the production decreased.After the jointing stage, all treatment of nitrogen fertilizer application ripened normally and the production was deal, even the amount of nitrogen fertilizer applied was over 100 kg per mu, of thc treatment without nitrogen fertilizer application, the population was small and appeared to be early senescent, the production was lower. From the experiment we conclude that in hlgh yield winter wheat field we should use soil fertility to get a certain amount of ears. To increast the panile yield, the jionting stage is an important stage of nitrogen ferti izer application. The method of nitrogen fertilizer application can gain-enough ears, high panile yield and high production without falling oave.

作者采用追踪研究法,通过不同的施肥期和不同施肥量,研究了高产麦田的不同熟相表现。小麦成熟时的表现可分为早衰、正常和贪青三种熟相。药隔期前施氮肥超过70公斤/亩表现前期群体过旺,后期容易倒伏,形成贪青熟相,产量下降;自药隔期开始施氮肥,即使超过100公斤/亩以上,也未发现例伏和贪青,表现正常落黄熟相,产量高,始终不施氮肥的处理,特别是在土壤肥力差的情况下,均表现群体小,生长量不足,后期早衰,产量低。在高产麦田采用依靠土壤基础肥力保穗数,药隔期重施肥水促穗重的施肥体系,利于小麦穗足、穗重、高产不倒。

 
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