不同土壤改良方式对乌柳生长的影响

通过改良天峻县高原冻土层土壤,改善其理化性质,分析不同改良方式对乌柳生长的影响,筛选出高寒高海拔冻土层地区适合乌柳生长的土壤改良方式。结果表明,不同改良配方对乌柳生长均有不同程度的改善和促进作用,其中:S4处理(60%森林土+10%腐熟羊粪+10%河沙+5%珍珠岩+15%本土)中乌柳各项生理参数最高,平均株高1.74m,平均冠幅55.66cm,平均地径0.978cm;其次为处理S8(60%泥炭+10%腐熟羊粪+10%河沙+20%本土),平均株高1.73m,平均冠幅54.57cm,平均地径0.972cm。S4和S8处理为适合高寒冻土层地区乌柳生长发育的土壤改良方式。

Effects of Different Soil Amelioration on Growth of Salix cheilophila

Through improved soil layer of frozen earth of plateau in Tianj un County,its physical and chemical prop-erties were analyzed;effects of different soil amelioration methods were screened by alpine.Soil amelioration meth-ods which is optimal for growth of Salix cheilophila in alpine and high-altitude frozen earth were screened.Result shows that the improved formula all have different degrees of improvement and promote role on growth of Salix cheilophila.Among S4 treatment,various physiological parameters of Salix cheilophila are the highest,mean plant height ,crown breadth,mean ground diameter being 1.74 m,55.66 cm & 0.978 cm;followed by treatment S8 (60% marl+10% sheep manure +10% river sand + 20% local soil),its mean plant height,crown & ground diameter is 1.73 m,54.57 cm & 0.972 cm,respectively.Treatment S4 & S8 are optimal for soil amelioration methods for growth of Salix cheilophila in alpine and high-altitude frozen earth.