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应用生态学报 ›› 1999, Vol. 10 ›› Issue (3): 297-300.

• 研究论文 • 上一篇    下一篇

麦玉两熟高产农田生态系统氮素的合理调控──以山东省桓台县冬小麦套种夏玉米系统为例

张新明1, 吴文良3, 李季3, 赵桂慎3   

  1. 1. 华南农业大学资源环境学院, 广州 510642;
    2. 中国农业大学资源环境学院, 北京 100094
  • 收稿日期:1999-02-08 修回日期:1999-05-04 出版日期:1999-05-25 发布日期:1999-05-25
  • 通讯作者: 张新明,男,34,讲师,博士,研究方向为土壤肥力及土壤化学.已发表论文5篇,曾参加河北省中加合作项目以及国家自然科学基金项目. E-mail:huaxli@scau.edu.cn
  • 基金资助:

    国家自然科学基金重点资助项目(39630070).

Rational N regulation in wheat/corn high-yield farm ecosystem—Taking winter wheat-summer corn system in Hengtai county of Shandong Province as an example

Zhang Xinming1   

  1. College of Resources and Environmental Sciences, South China Agricultural University, Guangzhou 510642
  • Received:1999-02-08 Revised:1999-05-04 Online:1999-05-25 Published:1999-05-25

摘要: 探讨了麦玉两熟高产农田生态系统中化肥氮与有机肥之间的交互作用,并提出了安全合理的施N量。种植制度为冬小麦套种夏玉米,试验处理设氮肥(尿素)4个水平、有机肥(鸡粪)3个水平;采用了裂区试验设计,以有机肥为主区,氮肥为副区。结果表明在供试条件下,化肥氮与有机肥之间有显着的负交互作用;建议300kg·hm-2作为供试条件下冬小麦套种夏玉米高产农田生态系统全年安全合理施N量.

关键词: 冬小麦, 夏玉米, 高产农田生态系统, 氮素, 合理调控, 随机过程, 相关系数, 自回归模型, 水文变异, 相依性

Abstract: This paper deals with the interaction between chemical Nand organic fertilizers in high-yield wheat/corn farmland ecosystem, and developed a safe and rational Napplication rate.The typical cropping system is winter wheat intercropped with summer corn. In the field experiment, four rates of urea and three levels of poultry manure were applied and split-plot experiment design was used, in which the manure treatments were placed as the main plots and the urea treatments as sub-plots. Phosphate and potassium fertilizers were same for all plots. The result shows that the interaction between chemical nitrogen fertilizer and poultry manure is significantly negative, and the safe and rational Napplication rate in high yield winter wheat summer corn system was 300kg·hm-2yr-1 and 150kg·hm-2, respectively.

Key words: Winter wheat, Summer corn, High-yield farm ecosystem, Nitrogen, Rational regulation, correlation coefficient, dependence, hydrological variability, auto-regression model, stochastic process.