对照

Yunnan Tobacco Research Institute, Yuxi 653100Abstract : In order to investigate the effect of medium and trace elements, organic fertilizer on appearance and internal qualities of sun-cured tobacco, search after some efficient ways to improve the qualities, by adding organic fertilizer in basal dressing and spraying trace elements on leaf surface, the results showed that both organic and medium or trace fertilizer having the effect of increasing output value and yield. Among the experimental treatments, magnesium fertilizer and manure plus rape cake showed the most.

为研究中微肥和有机肥对红土晒烟外观和内在品质的影响，探索提高和改善红土晒烟品质的有效途径，试验在基肥中加入有机肥，和大田生长期在叶面喷施中微量元素肥料，结果表明：施用有机肥的处理与对照相比，产量增加7.3%~20.9%，产值增加8.8%~25.3%，以厩肥＋菜籽饼处理的效果最好；四个喷施微肥的处理其产量和产值均超过了喷清水的对照，其中产量增加6.7%~15.6%，产值增加6.8%~20.5%，以喷施镁肥的增幅最大。

Results from this study showed that the experimental forest at Lisselbo had benefited from the sulphur acid addition (S2) and the fertilization combined with sulphur addition(N2P2K2S2) during the experiment. Addition of sulphur led to a slight increase of relative basal area growth during the experiment 1971-1977 (+4%), compared with the control (C,0%).

在实验处理期间，瑞典Lisselbo地区实验松林受益于硫酸的施用和酸肥的混合使用。1971-1977年间，酸处理的松树林分基径面积的增长比对照提高了4%；1976年酸处理结束，但其潜在的正效应在1978-1985年间得到增强，基径面积的增长比对照提高了20%，随后的某一阶段开始下降，1993-1994为11%。

The results showed that the radio of the node with female flowers of all materials including predominant female and normal lines increased significantly in short-day (8 h photoperiod) treatment compared to that of CK in the same treatment.

结果表明，8h光照处理使所有供试材料的雌花节率都高于对照，16h光照处理使所有供试材料的雌花节率都低于对照，两种处理均达到了显著差异。

Methods Self-planted corns were divided into contrastive area and polluted area. The polluted area was irrigated with simulative waste water, to collect different positions in different growing period as samples in polluted corn and contrastive corn respectively to analyze copper content.

采取自植玉米，分为对照区和污染区，对污染区的玉米人为施加模拟污水，分别采集污染玉米和对照玉米在不同生长期的不同部位作为样品进行Cu元素含量分析。

After the treatment, seed vigor is similar to control or even higher than control, without any harmful symptom.

适度超干后种子活力与对照相似甚至比对照高，未出现受伤害的症状。

Its quality is better than National Standard and its yield increases by 21.57% and 13.07% than contrast. Stable production is good and oil content is 43.54% and 41.37%. The ability of resistance to sclerotium disease, viruses and Lodging Resistance were better than contrast.

品质显著优于国家标准，产量比对照增产21.57%、13.07%，稳产性极好，平均含油率43.54%和41.37%，抗菌核病、病毒病能力和抗倒性均强于对照。

The differences of amplified DNA segments show ed that the red-fleshed sport was related to changes of some genetic substances .The polymorphic segments could be used to forecast the flesh color of grafted s eedlings from the sport scion.

用4种引物S107、S84、S157、AY17分别对芽变系单株及对照进行RAPD扩增，不同树龄、不同砧木的芽变单株与对照间的特异性片段同引物筛选中所得结果一致，可用所得引物对全红芽变系嫁接株的果肉颜色进行早期预测。

Penaeus chinensis were continuously fed by basic diets containing three levels (1%, 0.5%, 0.1%) Ig-Guard respectively for 21 days, and the basic diets as blank control and P280 Premix as positive control.

WSSV卵黄抗体提高中国对虾抗白斑综合征病毒感染力的研究：在基础饲料中分别添加3个水平(1%、0.5%、0.1%)的Ig-Guard制成3种试验饲料，同时以基础饲料为空白对照，以P280 Premix为阳性对照。

Compearing with the control variety which is widely culti-vated in a special ecotope,the varieties which canopy temperature are lower all the way dur-ing grain formation and filling than the control variety are named cold typical wheat,and the varieties which canopy temperature are higher all the way than the control varietyare named warm typical wheat.

我们以生产上通用的、起骨干作用的品种作为对照，把籽粒形成和灌浆期与对照品种相比，群体温度持续偏低或基本相当的小麦称之为冷型小麦，群体温度持续偏高的小麦称之为暖型小麦，群体温度偏高或偏低不够稳定的小麦称之为中间型小麦。

HPLC/MS/ MS was used to analyse the nucleosides in Cordyceps sinensis .and its counterfeits and adulterations. Compared the samples with the standard samples,the result showed that the main fragment chromatogram were similar.The four nucleosides in Cordyceps sinensis .and its counterfeits and adulterations were identified by MS/ MS.The totle content of uridine、hypoxanthosine、guanosine、adenosine in Cordyceps sinensis .was from 2.473 mg/g to2.830 mg/g ,the content of adenosine was from 0.850 mg/g to1.009 mg/g .

应用HPLC-MS对冬虫夏草及其混淆品与伪品中的四个核苷成分进行二级质谱定性分析，并与对照品进行比较，结果显示，冬虫夏草及其混淆品与伪品均能产生与相应对照品一致的主要碎片离子峰，进一步说明，冬虫夏草及其混淆品与伪品中均含有尿苷、肌苷、鸟苷及腺苷四种核苷成分。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐