古地理的

Trontium isotope test analysis indicates that relationship exists between~(87)Sr/~(86)Sr ratios and the variation of seawater, evolution of palaeo-geographicalconditions in the region of Tazhong is the direct factor which controls the change ofthe 87Sr / 86Sr ratios and dolomitization is also an important factor.

r同位素测试分析表明，~(87)Sr/~(86)Sr比值与海水变化有关，塔中地区古地理环境演化是~(87)Sr/~(86)Sr比值变化的直接控制因素，白云石化作用对~(87)Sr/~(86)Sr比值有着重要作用。

Heavy mineral analysis to Yunchi Group and Shanxiyao Group shows that contents of zircon, rutile and apatite have positive relationship, and no hornblende and pyroxene can been found in sediment.

这种沉积及古地理演化特征说明，在中更新世早期以前，不存在大河体系在该区的切割和疏淘作用。

This is the first time in the study and mapping of the Early Ordovician in South China.

这种定量的岩相古地理图在我国南方早奥陶世还是首次出现。

At the same time the research methods and expressing skills of tectonic- sequence-based lithofacies and paleogeography are proposed in this paper, and could be used for reference of the same type research.

同时，本文提出的构造—层序岩相古地理研究方法和表达技术，可为同类研究提供借鉴。

On the basis of a detailed analysis of sedimentary facies and sequence stratigraphy, the sequencelithofacies paleogeography are mapped with the system tracts as mapping units.

在划分沉积相和层序地层研究的基础上，以体系域为单位进行了层序-岩相古地理编图。

The variety of average content of organic carbon is related to the paleogeography situation of the study area and sea-level oscillation.

综合分析结果表明：该区泥、页岩中残余有机碳含量在0.05%-1.1%之间，平均值约为0.42%，其中下白垩统约为0.531%，上白垩统约为0.265%，有机碳平均含量变化特征与该区的古地理格局及海平面升降有关。

9 Coal seam hosting pattern,coal-forming paleogeography and its evolution,and illuminated the control action of depositional environment toward coal seam thickness.

以勘探资料为基础，对该区9号煤层赋存规律、成煤古地理及其演化进行了分析研究，阐述了沉积环境对煤层厚度的控制作用。

Xiaochaka formation developed Fan delta facies, delta facies, and carbonate platform facies, which basically continued the paleography of early and middle Triassic, but with intensive progress in early stage and quickly regress in late stage, companied by depositional overlapping in early stage and weathering erosion in late stage respectively.

肖茶卡组主要发育扇三角洲相、三角洲相和碳酸盐岩台地相，基本继承早中三叠世古地理面貌，但早期出现广泛海侵和后期海水退出，形成早期的沉积超覆与后期遭受风化剥蚀。

With the rich sediments supplied by the Pearl River, under the paleogeography sedimentary background of Baiyun Sag continuously subsiding, with sedimentary sequences related to relative transgressive sea level change ,contrary to regressive eustasy, the Pearl River Deepwater Fan System has specific evolution characteristics, which left the sedimentary record controlled by peripherical significant geological events. The sharp change of deposition rate and lithologic geochemical characteristics about 23.8Ma sequence boundary demonstratesd that sediment source had changed, perhaps related to the uplift of Tibet plateau and spreading of the South China Sea, which led the paleoPearl River drainage to expand to western China plateau , maybe much broader than present.

珠江深水扇系统以珠江为沉积物源、以持续深沉降的白云凹陷为沉积古地理背景、以与全球海退型海平面相反的相对海侵型海平面变化的沉积层序构成了其发育演化的特殊性，并留下了控制沉积的周边重要事件的记录。23.8 Ma等界面沉积速率和岩石地球化学特征均有突变，反映出物源区的变化，可能折射出与青藏高原隆升、南海扩张有关的重要事件，使得古珠江骤然向西部高原拓展，甚至较今天的珠江流域范围还广阔；承载珠江深水扇系统的白云凹陷持续沉降形成了陆坡内盆地，导致21~10.5 Ma BP多个层序深水扇垂向叠置充填的特殊沉积建造；根据60多口井资料建立的相对海平面变化曲线，具有与全球海平面变化相一致的三级旋回和不一致的二级旋回。

With the rich sediments supplied by the Pearl River, under the paleogeography sedimentary background of Baiyun Sag continuously subsiding, with sedimentary sequences related to relative transgressive sea level change ,contrary to regressive eustasy, the Pearl River Deepwater Fan System has specific evolution characteristics, which left the sedimentary record controlled by peripherical significant geological events.

珠江深水扇系统以珠江为沉积物源、以持续深沉降的白云凹陷为沉积古地理背景、以与全球海退型海平面相反的相对海侵型海平面变化的沉积层序构成了其发育演化的特殊性，并留下了控制沉积的周边重要事件的记录。23.8 Ma等界面沉积速率和岩石地球化学特征均有突变，反映出物源区的变化，可能折射出与青藏高原隆升、南海扩张有关的重要事件，使得古珠江骤然向西部高原拓展，甚至较今天的珠江流域范围还广阔；承载珠江深水扇系统的白云凹陷持续沉降形成了陆坡内盆地，导致21~10.5 Ma BP多个层序深水扇垂向叠置充填的特殊沉积建造；根据60多口井资料建立的相对海平面变化曲线，具有与全球海平面变化相一致的三级旋回和不一致的二级旋回。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。