%0 Journal Article
%T Effect of cultivation pattern and nitrogen application rate on soil fertility and nitrate accumulation under maize-wheat rotation system<br>不同栽培模式及施氮对玉米-小麦轮作体系土壤肥力及硝态氮累积的影响
%A ZHANG Hong
%A ZHOU Jian-Bin
%A WANG Chun-Yang
%A DONG Fang
%A LI Feng-Juan
%A <br>张 宏
%A 周建斌
%A 王春阳
%A 董 放
%A 李凤娟
%J 中国生态农业学报
%D 2010
%I 
%X A field experiment was conducted in Guanzhong of Shaanxi Province to study the effects of long-term cultivation patters and fertilization on organic matter, total soil nitrogen, and the quantity and distribution of nitrate N in soil profile under maize-wheat rotation system. The results indicate that the order of effect of the different cultivation patterns on soil organic matter and total nitrogen contents is: straw mulching > furrow planting > conventional cultivation > water-saving cultivation. Straw mulching has the most significant effect on soil organic matter and total nitrogen contents. Nitrogen application significantly influences soil organic matter and total nitrogen. After 6 years of maize-wheat rotation cropping, the order of residual nitrate N in the 0~200 cm soil profile under different cultivation patterns is: furrow planting > water-saving cultivation > straw mulching > conventional cultivation. There are significant differences in nitrate N accumulation among furrow planting, water-saving cultivation and the conventional cultivation. Nitrate N accumulation in the 0~200 cm soil profile increases with longer cultivation periods and increasing nitrogen application rates. Accumulated nitrate N under 240 kg(N)·hm-2 (N240) treatment is significantly higher than that under 120 kg(N)·hm-2 (N120) treatment. The pattern of nitrate N distribution across the soil profiles differs with differing nitrogen application rate. Under N240 treatment, nitrate N content below the 120 cm soil depth increases with soil depth.
%K Cultivation pattern
%K Nitrogen fertilization rate
%K Maize-wheat rotation system
%K Residual nitrate N
%K Soil profile<br>栽培模式
%K 施氮量
%K 玉米-小麦轮作
%K 硝态氮残留
%K 土壤剖面
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=4D7EA1236F11C8C47D4BD2A51483A1F1&yid=140ECF96957D60B2&vid=13553B2D12F347E8&iid=E158A972A605785F&sid=99A964928ADB4E67&eid=780091CB32840698&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=2&reference_num=30