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一、农业自然条件长白朝鲜族自治县位于吉林省东南部,鸭绿江上游的右岸,长白山的南坡。境内由海拔450米的鸭绿江谷地到海拔2559米的白头山(本县境内),高差达2100余米。全县90%的土地位于海拔800米以上,是东北位势最高的县分。本县地势高峻,由火山锥体和熔岩高原组成。鸭绿江源于白头山和望天鹅峰,放射状水系将高原开析成桌状台地和波状台地。鸭绿江沿本县南缘自东而西横流,塑出多级阶地和河漫滩。全县地势北高南低,南缘谷地自东向西倾斜,呈现以火山锥体为中心,大体呈同心园状分布的中山、高台地、低台地、台地谷缘斜坡、河谷平地等层状地形带。本县位于中纬度地方,由于地势高峻,成为吉林省气温最低,霜期最长,生长季最
First, the natural conditions of agriculture Changbai Korean Autonomous County is located in southeastern Jilin Province, the upper reaches of the Yalu River right bank, the southern slope of Changbai Mountain. The territory of 450 meters above sea level from the Yalu River valley to an altitude of 2559 meters Baishoushan (within the county), the difference of 2100 meters. 90% of the county’s land is located at an altitude of 800 meters above sea level, is the highest in the northeast sub-county. The high altitude of the county, composed of volcanic cones and lava plateau. The Yalu River is originated from Baitoushan and Wangsengfeng, and the radial water system analyzes the plateau into a tabletop and a wavy platform. Yalu River along the southern edge of the county from east to west cross-flow, plastic multi-level terraces and floodplains. The terrain of the county is high in the north and low in the north, and the valley in the south margin is inclined from east to west. The volcanic cones are the center, and there are zhongshan, high platform, low platform, platform valley valley, Terrain belt. The county is located in the mid-latitude, due to the high terrain, becoming the lowest temperature in Jilin Province, the longest frost period, the most growing season