自然地理

The research on regional sustainable development system is an important task of geographers.

区域可持续发展系统的定量研究则探讨较少，我们认为，对这一问题的深入研究有赖于地理学科与其它自然学科的进一步结合，以及人地关系地域系统理论的发展，有赖于地理学家的共同努力。

The main reason of the formation of modern geographical distribution was considered as natural spread, while the artificial, human assisted spread was the beginning of the application of Rhododendrons.

自然传播是形成杜鹃花现代地理分布的主要原因，人为的传播是人类利用杜鹃花的开始。

Myth, legend, and wild forces of nature all collide within Wellingtons landscape.

Taniwha，几维，海豹，神话，传说和自然力量相互冲撞构成了新西兰的地理地貌。

Be in early period of age the Warring States, namely today on city of chaste tree state's located river Chinese Campagna arisen the Hunan country with powerful and prosperous rich and popular, the fertile soil that ancient Yun Mengze precipitates, chinese, 3 rivers collect chaste tree, Hunan the wisdom that connect, advantaged geographical and natural condition, make age 5 bully with the Warring States 7 hero all dare not covet, reason comes when a large number of heroes of absorb of the Qin Dynasty, still have " Chu Shengsan door, die the hearsay of Qin Bichu ".

早在春秋战国时期，即今荆州市所处的江汉平原上就兴起了富庶强大的楚国，古云梦泽沉淀的沃壤，汉、荆、湘三江汇通的聪明，得天独厚的地理自然条件，使春秋五霸和战国七雄均不敢觊觎，故至秦并吞群雄时，尚有&楚剩三户，亡秦必楚&的传言。

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。