硝酸铵钙对加拿大杨和小叶杨扦插苗生长和碳氮代谢的影响  

Populus×canadensis Moench and Populus simonii Carr.cuttings

作　　者：常素玲 韩欣洋 CHANG Suling;HAN Xinyang(National Forest Administration Bureau of Guandi Mountain in Shanxi Province,Wenshui,Shanxi 032104,China)

机构地区：[1]山西省关帝山国有林管理局,山西文水032104

出　　处：《河北林业科技》2024年第1期1-6,共6页Journal of Hebei Forestry Science and Technology

基　　金：山西国有林管理局项目(GJK2022016)。

摘　　要：通过研究硝酸铵钙施用量对加拿大杨和小叶杨扦插苗生长和碳氮代谢的影响规律,可以为其育苗中科学施用硝酸铵钙提供依据。试验在田间条件下,以当年生扦插苗为试材,硝酸铵钙施用量分别设置为0、2.0、4.5、7.0、9.5 g/株分析比较了各处理苗木生长及碳氮代谢相关指标。结果显示:加拿大杨和小叶杨7.0 g/株处理株高分别较0 g/株(CK)提高了39.22%、32.91%,地径分别提高了75.22%、39.95%,根干物质积累量分别提高了27.98%、17.75%,茎干物质积累量分别提高了36.24%、33.11%,叶干物质积累量分别提高了28.58%、44.60%;7.0 g/株处理与CK相比显著提高了两种杨树木质部和树皮内总碳和总氮含量,9.5 g/株与7.0 g/株处理差异不显著;7.0 g/株与4.5 g/株处理相比显著提高了两种杨树树皮内淀粉和NSC含量,木质部差异不显著;2.0 g/株与CK相比不能显著提高两种杨树总碳、总氮、淀粉和NSC含量。综合分析认为,两种杨树扦插苗硝酸铵钙的适宜施用量为7.0 g/株。This test studied the effects of different amounts of calcium ammonium nitrate application on the growth and carbon-nitrogen metabolism of Populus×canadensis Moench and Populus simonii Carr.cuttings,and it want to be provided the theoretical basis for the scientific application of calcium ammonium nitrate in their seedling cultivation.The experiment was conducted under field conditions,using annual cutting seedlings as test materials,with calcium ammonium nitrate application rates set by 0 g/plant(CK),2.0 g/plant,4.5 g/plant,7.0 g/plant,and 9.5 g/plant analyzed and compared the growth and carbon and nitrogen metabolism related indicators of seedlings in various treatment.The results showed that the Populus×canadensis Moench and Populus simonii Carr.plant height of 7.0 g/plant treatment was higher than 0 g/plant(CK)by 39.22%and 32.91%respectively,and the ground diameter was higher than CK by 75.22%and 39.95%respectively,the root dry matter accumulation was higher than CK by 27.98%and 17.75%respectively,the stem dry matter accumulation was higher than CK by 36.24%and 33.11%respectively,and the leaf dry matter accumulation was higher than CK by 28.58%and 44.60%respectively;the total carbon and total nitrogen content in the xylem and bark of two types of poplar in 7.0 g/plant treatment was significantly higher than CK,while the 9.5 g/plant treatment did not significantly increase the total carbon and total nitrogen content in the xylem and bark of both types of poplar compared to the 7.0 g/plant treatment;the starch and NSC content in the bark of the two types of poplar trees in 7.0 g/plant treatment was significantly higher than the 4.5 g/plant treatment,while the difference in xylem was not significant;compared with the control,the total carbon,total nitrogen,starch,and NSC content of the two types of poplar trees in 2.0 g/plant treatment did not significantly higher than CK.Comprehensive analysis that the suitable application rate of calcium ammonium nitrate for the two types of poplar cutting seedlings is 7.0 g

关 键 词：硝酸铵钙 加拿大杨 小叶杨 碳代谢 氮代谢 

分 类 号：S792.11[农业科学—林木遗传育种]