Effects of Fertilization on Growth and Soil of Middle-aged Slash Pine Forest
施肥对湿地松中龄林生长及土壤的影响（英文）作者机构：四川省林业科学研究院四川成都610081 中南林业科技大学湖南长沙410004 泰格林纸集团股份有限公司湖南岳阳414002 湖南省林业科学院湖南长沙410004
出 版 物：《Agricultural Science & Technology》 (农业科学与技术（英文版）)
年 卷 期：2015年第16卷第11期
页 面：2386-2393页
学科分类：0907[农学-林学] 08[工学] 0829[工学-林业工程] 09[农学]
主 题：Fertilization Pinus elliottif, Middle-aged forest Growth Soil
摘 要：In order to promote the growth of mid-aged Pinus elliottii plantation, the effects of different fertilizing amounts of formula fertilizer were studied on the growth, the soil and cost-benefit of 9 year-old Pinus el/iottii plantations in the north- ern part of Hunan, China. Three years after fertilization, the results showed that the increments of DBH, height, individual volume and stock volume of stand, and the fertilizer benefit of the different fertilization treatments were higher than the control to varying degrees, and among them, 700 g/tree was the best for promoting the growth of Pinus elliottii. Two years fertilization, the soil nutrients were improved compared with before, pH values of different layers decreased, organic matter and rapid available K contents increased, and rapid available N content increased dra- matically with the upper layer having an increase higher than the lower one; rapid available P decreased at different levels with the upper layer having a decrease lower than the lower one; and proper application of fertilizer could promote the growth of Pisolithus tinctofius, and 7 months after fertilization, the number of Pisolithus fruiting body generally increased with the increase of the fertilizer within 100-800 g/tree. The yield and benefit per unit area could be increased by fertiliza- tion for 1 time in middle-aged Pinus elliottii plantations, and the best fertilizing amount was N-P-K fertilizer 700 g/tree.
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