不同施肥种类对屏边县秃杉种子园林木生长的影响

Effects of Different Fertilization Types on the Growth of Taiwania flousiana Seed Orchard in Pingbian County

[目的]探索不同施肥种类对秃杉林木生长的影响。[方法]连续3年对秃杉种子园进行不同肥种施肥试验,研究树高、胸径和冠幅的生长情况。[结果]施氮肥、磷肥、钾肥或复合肥对秃杉母树的生长均有一定的促进作用,肥种对树高、胸径和冠幅的影响具有一致性,其影响表现为氮肥>磷肥>钾肥>复合肥>不施肥。随着施肥年度的增加,施肥的效应愈加显现,与CK相比,4种处理的树高、胸径和冠幅的提高率均表现为第3年>第2年>第1年。每年株施1 kg尿素对促进秃杉母树的生长效果最好,其次是施磷酸二铵。施尿素第1年树高、胸径和冠幅分别提高14.80%、5.89%和7.14%,第2年分别提高17.51%、14.07%和17.81%,第3年分别提高18.73%、18.26%和30.56%;施磷酸二铵第1年分别比CK提高10.15%、2.18%和6.12%,第2年分别提高12.47%、8.41%和11.56%,第3年分别提高13.27%、12.10%和21.66%。[结论]每年株施1 kg尿素可较好地促进秃杉林木生长。

[Objective]To explore the effects of different fertilization types on the growth of Taiwania flousiana forest.[Method]Fertilization experiments with different fertilizers were carried out in the seed orchard of Taiwania flousiana for three consecutive years to study the growth of tree height,DBH and crown width.[Result]The application of nitrogen fertilizer,phosphorus fertilizer,potassium fertilizer or compound fertilizer can promote the growth of the mother tree of Taiwania flousiana.The effects of fertilizer species on tree height,DBH and crown width are consistent.The effects are as follows:nitrogen fertilizer>phosphorus fertilize>potassium fertilizer>compound fertilizer>no fertilizer.With the increase of fertilization year,the effect of fertilization became more obvious.Compared with CK,the increase rates of tree height,DBH and crown width of the four treatments were in the third year>the second year>the first year.Applying 1 kg urea per plant per year had the best effect on promoting the growth of the mother tree of Taiwania flousiana,followed by diammonium phosphate.Applying 1 kg urea per plant per year had the best effect on promoting the growth of the mother tree of Taiwania flousiana,followed by diammonium phosphate.In the first year,the height,DBH and crown width of the tree were increased by 14.80%,5.89% and 7.14% respectively compared with CK,and 17.51%,14.07% and 17.81% respectively in the second year,and 18.73%,18.26% and 30.56% respectively compared with CK in the third year.In the first year after diammonium phosphate application,the tree height,DBH and crown width were increased by 10.15%,2.18% and 6.12% respectively compared with CK;in the second year,the tree height,DBH and crown width were increased by 12.47%,8.41% and 11.56% respectively;in the third year,they were increased by 13.27%,12.10% and 21.66% respectively.[Conclusion]Applying 1 kg urea per plant per year can promote the growth of Taiwania flousiana.