田间的

Numerical simulating of the regulation was made. The mathematics model of water movement and the experience model of water absorbing were constructed for tomato, basing on the study on the characteristic of its root distribution. Movement of soil water was simulated, and the front of nitrogen was forecasted, using the piston flow model.

根据温室滴灌西红柿的实际情况，在对西红柿根系分布特征的田间试验分析的基础上，建立了滴灌西红柿水分运动数学模型和西红柿根系吸水经验模型，对田间土壤水分动态进行了模拟，运用简化的氮素运移活塞模型对土壤中氮素溶质锋面进行了预测。

As far as free proline content was concerned, that of EI plants was less than EF plants due to higher water-holding ability of EI plants (such as in field plot and field pot sustained drought stress), or due to less damage of membrane of EI plants (such as field pot cyclic drought stress and greenhouse osmotic stress).

至于脯氨酸含量的变化，或是由于感染植株保持体内水分的能力更强（固定样地和田间盆栽持续性干旱胁迫下），或是由于感染植株叶细胞膜结构受到的伤害程度更小（田间盆栽周期性干旱胁迫和温室渗透胁迫下），感染植株的游离脯氨酸含量均低于非感染植株。

The results show that when 40%,60%and 80%of the water field capacity in root systems deep range (about 40 cm deep soil) is taken as the amount of water supply the period of growth, the economic yield and benefit isn′t increased at the same rate. In order to increase the product at a great rate, the amount of water supply must be over 60%.

试验结果表明，在辣椒根系生长范围内，分别以田间最大持水量的40％、60％和80％做为整个生长期的补充水量，产量和产值并未随补充水量的增加而同幅度提高，要使产量大幅度提高，补充水量必须在根系生长范围内田间最大持水量的60％以上。

For understanding the yield and quality changes of spring wheat piled up in field after reaping in Qinghai province, we selected Qingchun 533, which was planted widely in Qinghai province, and Plateau 205(susceptible to preharvest sprouting), Plateau 115, Plateau 448 and Plateau 314 which were bred by our institute, piled up them as the quomodo farmer used, sampled them every nine days, and mensured yield, SDS sedimentation value and falling number value to trick the changes of wheat.

为了解青海省春小麦收割后田间堆放期间产量和品质的变化，选择近年育成的春小麦品种&高原205&、&高原115&、&高原448&和&高原314&以及曾为青海省主栽品种的&青春533&为材料，收刻后以农民常用的田间堆放方式进行堆放，每隔9d对其进行采样，测定产量、SDS沉淀位和降落数值的变化。

The genetic similarity coefficient analyses The genetic similarity coefficient between 85 accessions and their original backgroud Stylosanthes distributed between 0.6598 and 0.8351, in which No.3 accession was minimum, and No.85 accession was maximum.

在田间表现较好的7个株系中，2号与86号的相似系数最小，为0.6960，遗传距离最远；综合田间观察和AFLP分析，2号株系表现最佳，有望成为替代热研2号柱花草的新品种。

Thereinto, drip irrigation is divided into three treatments of different ration. Tectorial and untectorial treatment are adopted to semifixation spray irrigation. At the same time, seepage-preventing trial is done. By study of one growth season, it shows that the indexes, Comparing with flood irrigation, water-saving technique has the effect of increasing production and harvest, economizing water, energy sources and field, saving work, time and power. It has best significance difference among unit yield of using different irrigation ways. The highest yield is in irrigation treatment of 80% field moisture capacity, it is secondary in seepage-preventing ditch irrigation treatment and is the lowest in spray irrigation treatment. Drip irrigation increase yield 4.0%~25.9%,Seepage-preventing ditch irrigation increase yield 17.5%, and spray irrigation decrease yield 22.4～37.8% comparing with flood irrigation. The effect to yield is obvious in drip irrigation treatment of different irrigation ration.

不同灌溉方式间单位产量存在显著差异，80％田间持水量灌溉处理产量最高，防渗渠畦灌次之，喷灌的产量最低；与土渠漫灌单位产量相比，滴灌增产4.0％～25.9％；防渗渠畦灌增产17.5％；喷灌产量下降22.4％～37.8％；滴灌试验中不同灌溉处理对产量的影响显著，随着灌溉定额的减少，产量随之下降，主要原因是60％田间持水量的灌溉处理限制了棉株的生长发育，降低了产量；不同灌溉方式的灌溉定额与绿洲内土渠漫灌平均灌溉定额相比，滴灌节水47.7％～54.4％，防渗渠畦灌节水38.56％，喷灌节水58.2％；滴灌、喷灌及防渗渠畦灌与土渠漫灌相比分别省工16.2％、25.1％和3.6％；滴灌和喷灌较防渗渠畦和土渠漫灌节地约5％～7％；从净收益来看，防渗渠畦灌较土渠漫灌经济效益提高了34.2％，滴灌提高了9.8％～48.2％，喷灌则下降了23.8％和44.7％；而且采用不同灌溉方式种植棉花，对于成铃率、衣指、衣分、纤维长度、产量等指标，滴灌要优于喷灌和防渗渠畦灌；而成铃数、种子数、铃重、籽指等指标，滴灌、喷灌均小于防渗渠畦灌。

The water-saving technologies in field are researched and concerned relatively weak,especially in the water deficit conditions,how to utilize the synthesis effects of water and fertilizer,increase the efficient utilization of soil water in saline soil,which are researched unprofound,the mechanism unclear,cant adapt the time requirements of agricultural water-saving.

田间节水技术的关注与研究相对薄弱，特别是在水分亏缺条件下，如何利用水肥综合效应，提高盐渍化土壤田间水分的高效利用率的研究还不深入，机理不清，不能适应农业节水的时代要求。

Subunit network composed by manifold s and laterals which are all multi-diameter pipes is the important part of micro-irrigation system.

微灌是一种先进的节水灌溉技术，其田间管网是微灌系统的重要组成部分，组成田间管网的支管和毛管均为多孔出流管。

By field and indoor test, the paper measures soil physical property, soilmoisture constant and soil water movement parameter, provides the soil specificgravity , the soil apparent density, the soil fraction, the soil field moisturecapacity, the soil saturated moisture capacity, the soil percent moisture content ofcom germination and seedlings emergence, the corn wilting point, and alsoestablishes the equation of soil water retention curves, the equation of soil waterdispersion coefficient and the relationship between pressure and soil apparentdensity, and so those provides the parameter for numerical simulation.

通过田间和室内试验，测定了供试土壤的物理性质、土壤水分常数和土壤水分运动参数，得到了该土样的比重、容重、机械组成、田间持水率、饱和含水率、玉米种子发芽出苗土壤含水率、玉米凋萎系数，给出了土壤水分特征曲线方程、土壤水分扩散系数方程及土壤容重与土壤压紧力的关系，提供了数值模拟过程中所需的参数。

In order to promote the application of organic manure and chemical fertilizer in the rotation of Flue-cured tobacco rationally, the effect of different organic manure (crop straw, oil cake, fully-fermented pig manure) applied in preceding crops on availability of nitrogen fertilizer was studied by the methods of pot and micro plot experiment in field, using the Isotope 15N trace technique.

为进一步促进烤烟轮作周期内有机肥和氮肥的合理施用，采用田间微区试验和田间小区试验相结合的方法，应用稳定性同位素15N示踪技术，研究了前作施用有机肥对烤烟氮肥效应的影响。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。