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营造杉阔混交林,是既能保证杉木速生丰产,又能维持和提高土壤肥力的可行方法,我们对此进行了小面积的试验。试验情况试验地设在县林科所种子园,小地形为山丘。面积9.03亩,海拔高550米。位于北纬26°45’,东径110°18’。年平均温度11.4℃,年降雨量1368毫米。土壤为砂岩母质发育而成的黄红壤,土层厚度65—150厘米,石砾含量5—30％。南坡或西南坡向,坡度20度左右。原有植被为(?)木,白栎、柃木等,土壤呈微酸性。1980年
To create a mixed forest of fir and broad-leaved fir is a viable method to ensure the fast-growing and high-yielding Chinese fir and to maintain and enhance soil fertility. We conducted a small area experiment. Test conditions Experimental ground located in the county forestry seed orchard, a small terrain for the hills. An area of 9.03 acres, 550 meters above sea level. Located at latitude 26 ° 45 ’north, east longitude 110 ° 18’. The average annual temperature of 11.4 ℃, annual rainfall of 1368 mm. The soil is yellow-red soil developed from the parent material of sandstone. The thickness of the soil layer is 65-150 cm and the content of gravel is 5-30%. South or south-west slope, slope of about 20 degrees. The original vegetation (?) Wood, white oak, alder, etc., the soil was slightly acidic. in 1980