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中国农学通报

中国农学通报 ›› 2017, Vol. 33 ›› Issue (29): 90-94.doi: 10.11924/j.issn.1000-6850.casb16090089

所属专题： 土壤重金属污染； 水稻

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

钾硅钙微孔矿物肥对水稻重金属镉的降阻效果研究

罗思颖1,周卫军1,潘诚良2,辛本军2,曹 胜1,谭 洁1,刘 沛1   

  1. (1湖南农业大学资源环境学院,长沙 410128；2河南中科明星肥业有限公司,河南桐柏 474750）
  • 收稿日期:2016-09-19 修回日期:2017-02-26 接受日期:2017-03-22 出版日期:2017-10-24 发布日期:2017-10-24
  • 通讯作者: 罗思颖
  • 基金资助:
    湖南重金属污染耕地修复及农作物种植结构调整试点项目“成土母质对稻田土壤重金属积累的影响”(NC201538MZ01)。

Resistance Reduction Effect on Cd Content in Rice: Microporous Mineral Fertilizer with Potassium, Silicon and Calcium

Luo Siying1, Zhou Weijun1, Pan Chengliang2, Xin Benjun2, Cao Sheng1, Tan Jie1, Liu Pei1   

  1. (1College of Resources and Environment, Hunan Agricultural University, Changsha 410128;2Henan Zhongke Mingxing Fertilizer Limited Company, Tongbai Henan 474750)
  • Received:2016-09-19 Revised:2017-02-26 Accepted:2017-03-22 Online:2017-10-24 Published:2017-10-24

摘要： 为了探明钾硅钙微孔矿物肥对污染稻田土壤重金属镉(Cd)有效性的影响，弄清其对稻谷中Cd含量的降低效果。采用田间小区试验和室内分析测定方法进行研究，试验设5个处理，处理1：对照(CK)，常规施肥（40%复合肥450 kg/hm2）；处理2：钾硅钙微孔矿物肥600 kg/hm2+常规施肥；处理3：钾硅钙微孔矿物肥750 kg/hm2+常规施肥；处理4：钾硅钙微孔矿物肥1125 kg/hm2+常规施肥；处理5：钾硅钙微孔矿物肥1425 kg/hm2+常规施肥。结果表明：钾硅钙微孔矿物肥可以显著提高水稻穗总粒数、穗实粒数和结实率，提高水稻产量，增产率达到7.5%~16.0%；增加土壤碱解氮、有效磷和速效钾含量，提高土壤pH值，降低土壤有效Cd含量，从而降低稻谷Cd的积累，最大降低稻谷Cd含量达到38.6%。钾硅钙微孔矿物肥要达到降阻水稻重金属Cd的最佳效果，施用量不能低于1425 kg/hm2。

关键词: 作物轮作, 作物轮作, 土壤理化性状, 土壤呼吸, 旱地

Abstract: The restoration effect of the paddy field of the heavy metals pollution application the mineral micropores fertilizer with potassium, silicon and calcium (MFPSC) was studied with the field experiment. The results showed the total grain number per panicle, the actual number grains per spike, and the ripening rate were increased, while the rice yield was promoted, and the increase ratio was up to 7.5 -16.0%, after the MFPSC was applied. The content of the alkali-hydrolyzable nitrogen, the available phosphorus, and the soil available potassium was improved, and the soil available Cd was decreased, so the Cd accumulation of the rice grain was induced and prevented, the Cd content of the rice grain was decreased, its greatest value was up to 38.6%, when MFPSC was employed. The trial results suggested that the application rates could not be less than 95kg/667m2.