自然资源学报 ›› 2012, Vol. 27 ›› Issue (11): 1890-1898.doi: 10.11849/zrzyxb.2012.11.008

• 资源生态 • 上一篇    下一篇

不同施肥处理对红壤丘陵区水稻土养分状况的影响

徐丽丽1,2, 王秋兵1, 张心昱2, 邹敬东3, 戴晓琴2, 王辉民2, 孙晓敏2, 董雯怡2   

  1. 1. 沈阳农业大学 土地与环境学院, 沈阳 110866;
    2. 中国科学院 地理科学与资源研究所生态系统网络 观测与模拟重点实验室, 北京 100101;
    3. 江西省吉安市农业科学研究所, 江西 吉安 343119
  • 收稿日期:2011-11-14 修回日期:2012-02-22 出版日期:2012-11-20 发布日期:2012-11-20
  • 通讯作者: 张心昱(1973-),女,辽宁桓仁人,博士,主要从事地球环境化学方面的研究。E-mail:zhangxy@igsnrr.ac.cn E-mail:zhangxy@igsnrr.ac.cn
  • 作者简介:徐丽丽(1986-),女,蒙古族,内蒙古呼伦贝尔人,硕士,主要从事土壤学研究。E-mail:xulili062008@126.com
  • 基金资助:

    中国科学院知识创新工程重要方向项目 (KZCX2-EW-310);国家自然科学基金面上项目(41171153,41001179)。

Effects of Different Fertilization Treatment on Paddy Soil Nutrients in Red Soil Hilly Region

XU Li-li1,2, WANG Qiu-bing1, ZHANG Xin-yu2, ZOU Jing-dong3, DAI Xiao-qin2, WANG Hui-min2, SUN Xiao-min2, DONG Wen-yi2   

  1. 1. College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, China;
    2. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    3. Ji’an Agricultural Science Research Institute of Jiangxi Province, Ji’an 343119, China
  • Received:2011-11-14 Revised:2012-02-22 Online:2012-11-20 Published:2012-11-20

摘要:

研究依托千烟洲生态站,利用1998年建立的红壤稻田长期定位施肥试验,研究不同施肥处理对水稻土土壤碳及养分的影响。结果表明:①施用有机肥有利于提高土壤碳、 氮、 磷含量,土壤总有机碳(SOC)含量达到16.8 g·kg-1,全氮(TN)含量达到1.5 g·kg-1,速效氮(AN)含量达到153.8 mg·kg-1,速效磷(AP)含量达到43.3 mg·kg-1,而土壤速效钾(AK)含量仅达到23.0 mg·kg-1,低于施用化肥的各个处理;②施用氮、 磷、 钾肥减缓了红壤水稻土酸化趋势,显著增加土壤AP(12.3~47.1 mg·kg-1)、 AK(22.3~54.5 mg·kg-1)含量;③秸秆还田可以提高稻田红壤SOC(10.8 g·kg-1)、 TN(1.1 g·kg-1)含量。因此,建议在红壤稻田施入适量有机肥,提倡秸秆还田,提高土壤碳含量,同时配合施用钾肥,满足作物对养分的需求;化肥、 有机肥施用量需要考虑其对水体氮、 磷污染的潜在风险。

关键词: 红壤性水稻土, 有机肥, 化肥, 秸秆还田, 土壤养分

Abstract:

Supported by Qianyanzhou Ecological Experiment Station, this study aimed to discuss the effects of different fertilizer treatments on paddy soil elements including carbon and other nutrients by using the long-term fertilization trial on paddy soil established in 1998. The results showed as follows: 1) Application of organic manure was beneficial to increase the contents of soil carbon, nitrogen and phosphorus. Specifically, the content of soil organic carbon (SOC) reached 16.8 g·kg-1, total nitrogen (TN) reached 1.5 g·kg-1, available nitrogen (AN) reached 153.8 mg·kg-1, available phosphorus (AP) reached 43.3 mg·kg-1, while the content of available potassium (AK) was only 23.0 mg·kg-1 which was lower than the chemical fertilizer treatments. 2) The application of chemical fertilizer could alleviate soil acidification tendency to some extent in red paddy soil and significantly increase the contents of AP (12.3-47.1mg·kg-1) and AK (22.3-54.5 mg·kg-1). 3) Application of straw returning enhanced the content of SOC (10.8 g·kg-1) and TN (1.1 g·kg-1). 4) In conclusion, it was recommended to apply the organic manure and straw returning with K fertilizer to increase the soil carbon and satisfy the nutrient demand of rice. Meanwhile, the application rate of organic manure and chemical fertilizer should consider the potential risk of nitrogen and phosphorus pollution.

Key words: red paddy soil, organic manure, chemical fertilizer, straw returning, soil nutrient

中图分类号: 

  • S158