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为了改变因经营不善而造成的杉木林低产状况,自1986年以来,在杉木幼林中套种红瓜子,效益十分显著,不仅使杉木幼林实现速生丰产,而且获得短期经济收益。1 套种林地概况贺县黄洞林场地处中亚热带南缘,位于东经111°42′～111°51′,北纬24°20′～24°34′,地貌以丘陵为主,平均海拔400m,年均气温19.9℃,年降水量1535.4mm,土壤为山地红壤和黄红壤,pH值4.5～6.0。林地为杉木低产林经皆伐炼山后全垦更新的杉木当年和第2年的幼林地。
In order to change the low yield of Chinese fir plantation due to poor management, the planting of red melon seeds in young plantations of Cunninghamia lanceolata has been very effective since 1986, which not only makes fast-growing and high-yielding young Chinese fir plantations, but also obtains short-term economic benefits. An Overview of Interforestation The Huangdong Forest Farm in He County is located in the southern margin of the Central Asia subtropics. It lies between 111 ° 42 ’~ 111 ° 51’ east longitude and latitude 24 ° 20 ’~ 24 ° 34’ north. Its topography is mainly hilly with an average elevation of 400m and annual average temperature 19.9 ℃, the annual precipitation is 1535.4mm, the soil is mountain red soil and yellow-red soil, pH value is 4.5-6.0. The forestland is the low-yielding forest of Cunninghamia lanceolata.