%0 Journal Article
%T Effects of organic manure on the profile distribution of soil nitrate-N in a peach orchard.<br>有机肥对桃园土壤硝态氮分布的影响
%A WANG Yan-ping
%A GAO Ji-xi
%A LIU Shang-hua
%A DU Xiang-ge
%A <br>王艳萍
%A 高吉喜
%A 刘尚华
%A 杜相革
%J 应用生态学报
%D 2008
%I 
%X In 2004 and 2005, a field experiment was conducted in a peach orchard in Pinggu District of Beijing to study the effects of organic manure on the profile distribution of nitrate-N in soil. Four treatments were installed, i.e., applying 6.75 x 10(4) kg x hm(-2) of organic manure both in 2004 and in 2005 (T1), no fertilization in 2004 but applying 13.5 x 10(4) kg x hm(-2) of organic manure in 2005 (T2), no fertilization in 2004 but applying 6.75 x 10(4) kg x hm(-2) of organic manure in 2005 (CK), and no fertilization both in 2004 and in 2005 (CK). In 2006, soil samples at the depth of 0-120 cm were collected from the treatments and analyzed. The results showed that soil nitrate-N had a relatively uniform distribution in the profile in CK, accumulated more at the depth of 0-60 cm and decreased gradually at 60-120 cm in T1 and T3, and increased with increasing depth, with the peak at the depth of 100-120 cm in T2. The soil nitrate-N content below 60 cm in T2 was the highest among all the treatments, indicating that applying excessive amount of organic manure could induce nitrate-N leaching. The profile distribution of soil nitrate-N had significant correlations with the total amount of applied organic manure, the amount of organic manure applied in the nearest year, and the distance of sampling sites from peach tree. A correlation model of organic manure treatments and soil nitrate-N distribution was established.
%K 有机肥
%K 硝态氮浓度
%K 分布
%K 淋失
%K 有机肥施用
%K 桃园
%K 土壤剖面
%K 硝态氮分布
%K 影响
%K orchard
%K peach
%K soil
%K profile
%K distribution
%K organic
%K manure
%K 相关模型
%K 显著相关关系
%K 距离
%K 检测点
%K 施氮量
%K 施氮总量
%K 硝态氮浓度
%K 土壤硝态氮
%K 分析表
%K 硝态氮的淋失
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=07DB10C8A1C23A8DA56D70EFB881F204&yid=67289AFF6305E306&vid=2A8D03AD8076A2E3&iid=DF92D298D3FF1E6E&sid=76DA548BC2ECBC62&eid=CAF3E71A6764366D&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=2&reference_num=25