浙江农林大学学报2017，Vol.34Issue(4)：670-678,9.DOI:10.11833/j.issn.2095-0756.2017.04.013
有机物料对酸化山核桃林地土壤的改良作用
Effect of organic materials on improvement of Carya cathayensis forest acidic soil
摘要
Abstract
To study the effects of different organic materials (namely biogas residue;Feideli, a commercial or-ganic fertilizer; potassium humate; and bamboo-char) for improving acidic soils in a Carya cathayensis forest, an incubation experiment and a field study were carried out. In the incubation experiment, mixtures of soil with each of the organic materials at three application rates (0, 1 and 10 g·kg-1) were incubated at 25 ℃. Each treatment were replicated 4 times. Completely randomized design was used. Soil samples were collected at 0, 10, 20, 30, 60 and 90 d. Based on the incubation experiment, bamboo-char, Feideli and potassium humate were used in the field experiment, at the rate of 2 kg·tree-1, and the blank was as ck. Four treatments with 6 repli-cates were randomly designed. Results showed that application of organic materials not only improved soil pH from 4.41 to 5.17 and soil exchangeable base content, but also significantly decreased (P<0.05) soil acidity. Also, soil exchangeable Al was reduced from 3.94 cmol·kg-1 to 0.72 cmol·kg-1, a decrease of 81.70%. Mean-while, organic material increased the content of soil available N, P, K, and soil organic matter (SOM) with SOM increasing 100.70% and N increasing 104.70%; soil available P reached 22.34 mg·kg-1 and K attained 230.83 mg·kg-1 or more than doubling. Results from the field experiment showed that organic materials signifi-cantly improved growth and nut yield (P<0.05), and the nut yield increase was in the order of potassium hu-mate>Feideli>bamboo-char. Overall, the effect of potassium humate was more effective than other organic materials on soil acidity improvement. [Ch, 8 fig. 3 tab. 17 ref.]关键词
森林土壤学/山核桃/有机物料/土壤酸化/改良作用Key words
forest soil science/Carya cathayensis/organic materials/soil acidification/soil improvement分类
农业科技引用本文复制引用
石红静,马闪闪,赵科理,叶立前,李皓,沈颖,赵伟明,叶正钱..有机物料对酸化山核桃林地土壤的改良作用[J].浙江农林大学学报,2017,34(4):670-678,9.基金项目
浙江省科学技术公益项目(2015C33051) （2015C33051）
国家自然科学基金资助项目(41201323) （41201323）
浙江省林业科研成果推广项目(2013B13) （2013B13）
浙江农林大学科学研究发展基金资助项目(2005FR053) （2005FR053）
