Biochar, as a good sequestration agent, is also a new material for improving soil physical and chemical properties. Chinese fir plantation, at different developmental stage in Xinkou teaching state forest farm of Fujian Sanming, were studied to explore the effects of different types of biochar on soil nitrogen forms. Two different kinds of biochar ( wood-biochar, bamboo-bio-char) were choosed to find the influence of different type of biochar on soil fertility in the Chinese fir plantation. The results showed as follows:the biochar had little effect on soil total nitrogen on the surface in the 1st year. Biochar treatment had significantly increased soil hydrolysis nitrogen in the 1st year, then decreased in the 2nd year, and there was no significant difference compared to the control in the 3rd year. Two types of biochar had little influenced on inorganic nitrogen in the soil, bamboo-biochar treatment increased, but the woody-biochar treatment decreased mostly. There were significant interactive effects among biochar treatment, developmental stage and soil layer on the soil hydrolysis nitrogen. The influence of biochar on different developmental Chinese fir stages follow by:youth stand> middle stand> mature stand. Two types of biochar comparison showed that, bamboo-biochar is better than wood-biochar on soil improvement.
国家科技期刊平台
NSTL
维普
万方数据
