一、基本情况姜各庄林场,位于乐亭县东部沿海,整个林区为渤海沿岸的海退迹地。林地土壤贫瘠,多为细沙土,植被少,普遍缺乏有机质。除少数沙丘外,大部林地低洼易涝。地下水位0.5—1.2米。年平均气温10.1℃,平均最低气温-23.7℃,平均最高气温37.9℃,昼夜温差大。年平均降雨量611.5毫米,主要集中在七、八月份。近两年出现了较严重 First, the basic situation Jianggezhuang forest farm, located in the eastern coast of Laoting County, the entire forest area for the Bohai Sea coast retreat. Forest soil barren, mostly fine sand, less vegetation, the general lack of organic matter. Except for a few sand dunes, most of the woodlands are low-lying and prone to floods. Groundwater level 0.5-1.2 meters. The annual average temperature of 10.1 ℃, the average minimum temperature of -23.7 ℃, the average maximum temperature of 37.9 ℃, large temperature difference between day and night. The average annual rainfall of 611.5 mm, mainly concentrated in July and August. Appeared in the past two years more serious