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我场位于四川盆地南部,海拔400—500米,属浅丘地带,地势较为平缓开阔。年平均温度为摄氏18度,最高温度38度,最低温度零下1.6度。年平均相对湿度为81%。属冬暖夏热、雨量允沛的亚热带气候。场内适生树种为马尾松,四年生以上的人工幼林约有四万亩,占林区总面积的64%,现已郁闭,生长较好。林场过去曾有松梢螟
My field is located in the southern Sichuan Basin, 400-500 meters above sea level, is a shallow hill area, the terrain is relatively flat and open. The average annual temperature of 18 degrees Celsius, the highest temperature of 38 degrees, the lowest temperature of minus 1.6 degrees. The average annual relative humidity is 81%. Subtropical climate is warm in winter and warm in summer, rainfall is abundant. The suitable tree species for the field is Pinus massoniana, and about 40,000 mu of young plantations over four years of age occupy 64% of the total area of the forest. Now the plantation is closed and the growth is good. In the past there was a pine needles