%0 Journal Article
%T Effects of bio-mulching on rhizosphere soil microbial population, enzyme activity and tree growth in poplar plantation.<br>生物覆盖对杨树人工林根际土壤微生物、酶活性及林木生长的影响
%A LIU Jiu-jun
%A FANG Sheng-zuo
%A XIE Bao-dong
%A HAO Juan-juan
%A <br>刘久俊
%A 方升佐
%A 谢宝东
%A 郝娟娟
%J 应用生态学报
%D 2008
%I 
%X Coriaria nepalensis, Pteridium aquilinum var. latiuscukum, Imperata cylindrical var. major, and Quercus fabric were used as mulching materials to study their effects on the rhizosphere soil microbial population and enzyme activity and the tree growth in poplar plantation. The results showed that after mulching with test materials, the populations of both bacteria and fungi in rhizosphere soil were more than those of the control. Of the mulching materials, I. cylindrical and Q. fabric had the best effect, with the numbers of bacteria and fungi being 23.56 and 1.43 times higher than the control, respectively. The bacterial and fungal populations in rhizosphere soil increased with increasing mulching amount. When the mulching amount was 7.5 kg m(-2), the numbers of bacteria and fungi in rhizosphere soil were 0.5 and 5.14 times higher than the control, respectively. Under bio-mulching, the bacterial and fungal populations in rhizosphere soil had a similar annual variation trend, which was accorded with the annual fluctuation of soil temperature and got to the maximum in July and the minimum in December. The urease and phosphatase activities in rhizosphere soil also increased with increasing mulching amount. As for the effects of different mulching materials on the enzyme activities, they were in the order of C. nepalensis > P. aquilinum > I. cylindrical > Q. fabric. The annual variation of urease and phosphatase activities in rhizosphere soil was similar to that of bacterial and fungal populations, being the highest in July and the lowest in December. Bio-mulching promoted the tree height, DBH, and biomass of poplar trees significantly.
%K 杨树
%K 生物覆盖
%K 根际土壤
%K 微生物
%K 脲酶活性
%K 磷酸酶活性
%K 生长
%K 生物覆盖
%K 杨树人工林
%K 土壤微生物
%K 磷酸酶活性
%K 林木生长
%K 影响
%K soil
%K microbial
%K population
%K rhizosphere
%K Effects
%K poplar
%K plantation
%K tree
%K growth
%K activity
%K 作用
%K 量具
%K 胸径
%K 树高
%K 趋势相似
%K 真菌
%K 年动态变化
%K 土壤脲酶
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=CA2C07FBD14D720395B693066E5F2642&yid=67289AFF6305E306&vid=2A8D03AD8076A2E3&iid=B31275AF3241DB2D&sid=FE01B30EDB347E58&eid=004AE5CF627F0ACA&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=0&reference_num=30