摘要
研究氮磷钾肥不同肥料对山丹县樟子松人工幼林生长、土壤养分含量和土壤酶活性的影响,以张掖市山丹县为试验地点,分别划分4块等大樟子松人工幼林种植样地,并将其分别编号为A样地、B样地、C样地和D样地,A样地为空白对照组(不施肥),B样地、C样地、D样地分别各施氮肥、磷肥和钾肥,评估不同施肥方式对樟子松人工幼林生长、土壤养分含量和土壤酶活性的影响。结果表明:B样地、C样地和D样地樟子松幼林株高、材积和胸径均高于A样地,其中B样地樟子松幼林株高最高,较A样地分别增长29.35%、21.43%和29.03%;B样地、C样地和D样地樟子松人工幼林0~10 cm表层土壤和>10~20 cm亚表层土壤碳、氮、磷等养分含量均高于A样地,而pH值低于A样地;与A样地相比,B样地、C样地和D样地樟子松人工幼林土壤蔗糖酶、脲酶和过氧化氢酶活性均有所提升。施肥可促进樟子松人工幼林生长,增强土壤养分含量和土壤酶活性,相比于磷肥和钾肥,氮肥施肥效果最为理想,对樟子松人工幼林的作用更加积极,在营林造林中,可根据实际情况合理施用氮肥。
This paper studied the effects of different nitrogen,phosphorus and potassium fertilizers on the growth,soil nutrient content and soil enzyme activity of young artificial forests of Pinus sylvestris var.mongholica Litv in Shandan County,Zhangye City.Four plots were divided into plots A,B,C and D respectively,and plots A were used as the blank control group(no fertilization).The effects of different fertilization methods on the growth,soil nutrient content and soil enzyme activity of young plantation of Pinus sylvestris var.mongholica Litv were evaluated in plots B,C and D respectively.The results showed that the plant height,volume and DBH of young pine in plots B,C and D were higher than those in plots A,and the plant height of young pine in plots B was the highest,increasing by 29.35%,21.43%and 29.03%,respectively,compared with plots A.The contents of carbon,nitrogen,phosphorus and other nutrients in 0~10 cm surface soil and>10~20 cm subsurface soil of young plantations in plots B,C and D were higher than those in plots A,but the pH value was lower than that in plots A.Compared with plots A,the activities of sucrase,urease and catalase in young plantations of Pinus sylvestris var.mongholica Litv in plots B,C and D were improved.Compared with phosphate and potassium fertilizers,nitrogen fertilizer has the best fertilization effect,and has a more positive effect on young artificial forests.In afforestation,nitrogen fertilizer can be applied reasonably according to the actual situation.
作者
赵振坤
Zhao Zhenkun(Shandan County Mechanical Forest Farm,Shandan 734100,Gansu,China)
出处
《绿色科技》
2024年第21期98-101,共4页
Journal of Green Science and Technology
关键词
樟子松
氮肥
磷肥
钾肥
生长
土壤养分
酶活性
Pinus sylvestris var.mongholica Litv
nitrogen fertilizer
phosphate fertilizer
potassium fertilizer
growth
soil nutrients
enzymatic activity
作者简介
赵振坤(1987-),男,工程师,研究方向为林木良种培育和防沙治沙等。
