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从草律、草地两个试验点7种施肥处理3次重复,林龄38个月的尾叶按无性系MLA生长量调查分析结果,得出最佳施肥处理为:N150 P300 K300(克/株),其平均蓄积生长量为29.24m~3/hm~3a,最高小区平均达到32.1m~3/hm~2.a,比常规施肥滤泥5000P250K150N100蓄积生长量26.26m~3/hm~2.a大11.3%,比CK不施肥蓄积生长量6.39m~3/hm~2.a大357.59%,比总体平均值18.81m~3/hm~2.a大55.45%,经方差分析差异极显著。最佳处理的经济效益比常规施肥提高12.6%,比不施肥提高458%。
The results showed that the best fertilization treatments were: N150 P300 K300 (g / plant), seedling stage ). The average growth volume was 29.24m ~ 3 / hm ~ 3a and the highest plot was 32.1m ~ 3 / hm ~ 2.a, which was 26.26m ~ 3 / hm ~ 2 higher than the conventional fertilization filter 5000P250K150N100. a was 11.3%, which was 357.59% larger than that of CK, which was 6.39m ~ 3 / hm ~ 2.a, which was 55.45% greater than the overall average of 18.81m ~ 3 / hm ~ 2.a . The economic benefit of the best treatment is 12.6% higher than that of conventional fertilization and 458% higher than that of no fertilization.