不同抚育措施对杉木大径材培育效果的影响

Effect of Different Tendering Measures on Cunninghamia lanceolata

于2011年在浙江省庆元县和龙泉市的杉木人工林设立了3个小班进行试验,每木调查,2012年3月前完成间伐,然后采取"间后施肥"、"间后不施"、"不间不施"3种不同抚育措施,研究其对杉木胸径生长量和经济收入的影响。结果表明:以"间后施肥"的效果最好,两年杉木大径材平均胸径生长量比间伐前增加了4 cm,蓄积增长量比间伐前增加了66.75 m3/hm2,平均胸径增长量分别比"间后不施"和"不间不施"增加1.03 cm和3.43 cm,平均蓄积增长量分别比"间后不施"和"不间不施"增加15.45 m3/hm2和42.90 m3/hm2。

Three subcompartments were established in 2011 for test of different tending measures in Cunninghamia lanceolata plantation of Qingyuan and Longquan of Zhejiang province. Complete enumeration was conducted in 2011 at permanent sample plots in each treatment of each subcompartment. Thinning was finished before March 2012, followed by three different tendering measures, such as fertilization after thinning, no fertilization after thinning, no fertilization no thinning. The result demonstrated that fertilization after thinning had the best effect on DBH and standing stock increment, with 4cm and 66.75 m^3/ha more two years later. Mean DBH and standing stock increment of treatment of fertilization after thinning was 1.03 cm and 3.43 cm, 15.45 m^3/ha and 42.90 m^3/ha more than that of no fertilization after thinning, no fertilization no thinning.