田间的

In this paper, with field experiments the allometry relationship between plant height and biomass of annual plants, Avena sativa and Vicia sativa, under low density and high density, were investigated, and the data obtained from experiments were analysed with the linear and nonlinear regression.

通过田间试验研究了两种一年生植物燕麦和箭豌豆在高密度和低密度条件下表现出来的株高与生物量之间的异速生长关系，并用线性回归和非线性回归的方法对所得数据进行了分析。

The result of stepwise regression analysis showed the RH and the precipitation in the three days before investigation and in the ten days before the investigation were the key factors affecting the apothecium number.

逐步回归分析结果表明调查日前三天的相对湿度和降水量，调查日前十天的相对湿度和降水量是影响田间子囊盘数量的最主要因素。

The result of stepwise regression analysis showed the amount of rainfall and the relative humidity in the three days before investigation and the number of apothecium in the investigation day were the key factors affecting the number of the spores in the air.

逐步回归分析结果表明调查日前三天内降水量、调查当天的子囊盘数量和调查日前三天的相对湿度是影响田间空中孢子量的最主要因素。

A dominant parasitoid, Campoletis chorideae Uchida (Hymenoptera: Ichneumonidae), which attacked two important Lepidoptera pests, cotton budworm Helicoverpa armigera Hübner and tobacco budworm Helicoverpa assulta Guenée. We selected C.

棉铃虫齿唇姬蜂Campoletis chorideae Uchida是棉铃虫Helicoverpa armigera Hübner和烟青虫Helicoverpa assulta Guenée的主要寄生性天敌，对两种害虫的田间自然控制起着非常重要的作用。

Carabid beetle was selected as bioindicators and pitfall trapping was used as sampling method for animal biodiversity evaluation; for flora evaluation, both field experiment and releve approach were used with assistance of remote sensing image; for the evaluation of soil organic carbon change, a Regional Resources and environmental information system was established; and RS, GIS and biogeochemistry model were all used to evaluate the soil organic carbon change.

生物多样性研究中，动物多样性研究部分以步甲作为指示生物展开，方法为陷阱法；植物多样性研究部分采用田间试验以及遥感影像配合下的样方记录法；对区域土壤有机碳变化的研究采用遥感、地理信息系统和生物地球化学循环模型模拟相结合的方法。

However,their effects upon the rice leafhopper,Empoasca subrufa Melichar,remain to be carefully investigated.Experimentswith adults were conducted both in the laboratory and in the field.The resultsmay be summerized as follows:1.Spraying with 25% DDT emulsion in 200-300 parts of water killed over90% of the leafhoppers,whereas in 400 parts of water,it gave an unstable kill-ing effect ranging from 75% to 90%.Dus...

田间使用 DDT 防治白翅叶蝉的残效期约为10—12天。666单独用来防治白翅叶蝉效果甚差，但与 DDT 混合使用有增效作用，残效期与单独使用 DDT 相似；二者混用是最合理的施用方式，可以节省 DDT 用药量，减低药费，同时对多种稻虫可收综合防治之效。25%DDT 乳剂和6%可湿性666按1∶1∶400及1∶1∶600混用，其毒效相当于单用 DDT 1∶200及1∶300者；用1∶1∶500喷射效果比单用 DDT 1∶300者还略高；5% DDT 粉剂和0.5%666粉剂按1∶1混用，其毒效也和单用5% DDT 粉剂相接近。

One important aspect of the disease is that the pathogen is naturally borne and transmitted by seed which usually serves as the primery inoculum source for TBS.

种子带菌是田间主要初侵染源之一，也是病害从一年传染到下一年的原因，还是病害从一个地区传染到其它地区的原因。

The tested varieties showed different resistance degree in different replications,but had one stable resistant level relatively.

不同抗感品种在田间不同重复鉴定中均表现不同程度的抗幅波动，但都有一个相对稳定的抗性水平。

Under sunlit greenhouse condition, systematic field and laboratory surveys were carried out to study the effects of different crop successions on main disease development in cucumber.

在温室条件下，通过田间系统观察和室内测定相结合的方法，研究了不同连作年限温室土壤对黄瓜主要病害发生的影响。

Adaptation of Kentucky bluegrass varieties does not differ in the field, and only under stress conditions do they show the difference of adaptation.

草地早熟禾Poa pratensis，在田间试验条件下各品种的适应能力无明显差异，只有在逆境胁迫下才表现其适应力的差别。

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。