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我国南方丘陵和乎原地区的气候与土壤特点是:地势开阔,夏季日照时间长,光照强,气温高,雨量少,风力和蒸发量大,空气湿度小,因而土壤容易干燥、板结,透水性和通气性较差,微生物活动困难,有机质少,较贫瘠,酸性重。这样的生态环境,与杉苗喜蔽阴,喜湿润,喜肥沃,喜疏松和怕风、怕旱等要求,是不相适应的,所以在这些地区培育杉木壮苗有一定困难,必须采取针对性的技术措施,才能达到要求。我校(江西农大)地处江西北部,东径115°58′,北纬28°40′,属西山山脉系的梅岭脚下,丘陵起伏度不大,地势比较平坦。夏季日照时间每天约11小时,最高气温达40.6℃,地表温度达65℃左右;雨量大但不均匀,
The climate and soil characteristics of the Hilly and Peace region in the south of China are as follows: broad terrain, long sunshine time in summer, high light intensity, high temperature, less rainfall, large wind and evaporation volume and small air humidity, thus making the soil easy to dry, And poor aeration, microbial activity difficulties, less organic matter, more barren, acidic heavy. This kind of ecological environment is incompatible with the requirements of fir seedlings such as hi-sheltered yin, hi-moist, hi fertile fertile, hi loose and fear of wind, drought and other requirements, so fir seedling cultivation in these areas have some difficulties, we must take Sexual technical measures to meet the requirements. My school (Jiangxi Agricultural University) is located in northern Jiangxi Province, 115 ° 58 ’east longitude, latitude 28 ° 40’, is the Department of Xishan Mountain Meiling at the foot of the hilly ups and downs, the relatively flat terrain. Summer sunshine time of about 11 hours a day, the maximum temperature of 40.6 ℃, the surface temperature of about 65 ℃; rainfall is large but uneven,