Preliminary Study on the Influence of Soil Chemical Characteristics on the Growth Triats of Keteleeria Fortunei in Artificial Young Plantation
This article preliminarily aimed at exploring the influence of soil chemical characteristics on the growth traits of Keteleeria fortunei in artificial young plantation.By using K.fortunei in artificial young plantations(8 a)of Hua'an,Yongchun,and Datian regions as research objects,the effects of soil chemical characteristics on the growth triats of artificial young K.fortuneiwere plantation were analyzed.Through correlation and path analysis ect to explore the effects of soil chemical characteristics on the growth of young plantation.The results showed that there were significant differences between the soil chemical characteristics and growth traits of K.fortunei in artificial young plantation of different regions.The average tree height,average DBH,average volume,pH,the effective phosphorus content,total carbon content,total nitrogen content,total phosphorus content,the ammonium nitrogen content,the nitrate nitrogen content of K.fortunei in artificial young plantation ranged from 6.21～6.80 m,8.45～10.00 cm,0.02～0.03 m3,4.06～4.71,1.97～3.47 mg·kg-1,1.92％～3.80％,1.51～2.17 g kg-1,221.00～474.00 mg·kg-1,7.53～9.53 mg·kg-1,7.23～14.00 mg kg-1,respectively.Above all,there was a significant correlation between the growth traits and the correlative soil chemical characteristics of K.fortunei in artificial young plantation.The average DBH of K.fortunei in artificial young plantation was significantly correlated with soil pH value,available phosphorus content,total carbon content,and total nitrogen content.The average volume was significantly correlated with soil pH value,available phosphorus content,total carbon content,total nitrogen content,and nitrate nitrogen content.Among them,the most important soil chemical characteristic index that affects the growth of K.fortunei in artificial young plantation was pH value.The smaller the soil content of acidity,the more favorable it was for the growth of K.fortunei in artificial young plantation.Therefore,a regression model between the average volume and soil pH value of K.fortunei in artificial young plantation was constructed as follows Y=-0.0 343 871 740+0.014 088 825 473X1.
Keteleeria fortuneisoil chemical characteristicsgrowthinfluence
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