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中国农学通报 ›› 2024, Vol. 40 ›› Issue (6): 101-106.doi: 10.11924/j.issn.1000-6850.casb2023-0240

• 资源·环境·生态·土壤 • 上一篇    下一篇

叶面调理剂在不同镉污染程度稻田应用效果研究

李诚1(), 王少希1, 钱艳杰1, 易展平1, 严小兵2()   

  1. 1 长沙市农业技术推广中心,长沙 410399
    2 长沙市农业科学研究院,长沙 410003
  • 收稿日期:2023-03-23 修回日期:2023-07-05 出版日期:2024-02-22 发布日期:2024-02-22
  • 通讯作者:
    严小兵,男,1966年出生,湖南长沙人,高级农艺师,本科,研究方向:植保新技术推广和产业化服务。通信地址:410003 湖南长沙开福区月湖街道万家丽北路372号 长沙市农业科学研究院,Tel:0731-84250069,E-mail:
  • 作者简介:

    李诚,男,1987年出生,湖南长沙人,高级农艺师,硕士,研究方向:水稻高产栽培、病虫害综合防控。通信地址:410399 湖南长沙岳麓区桐梓坡西路138号 长房时代国际20栋写字楼长沙市农业技术推广中心,Tel:0731-85521262,E-mail:

  • 基金资助:
    2023年长沙市农业科研攻关专项

Study on the Application Effect of Leaf Surface Conditioner in Rice Fields with Different Cadmium Pollution Levels

LI Cheng1(), WANG Shaoxi1, QIAN Yanjie1, YI Zhanping1, YAN Xiaobing2()   

  1. 1 Changsha Agricultural Technology Extension Center, Changsha 410399
    2 Changsha Academy of Agricultural Sciences, Changsha 410003
  • Received:2023-03-23 Revised:2023-07-05 Published-:2024-02-22 Online:2024-02-22

摘要:

探讨3种叶面调理剂对不同镉污染程度稻田土壤中全镉含量、有效态镉含量、土壤pH、稻米镉含量、水稻各个组织中镉含量以及产量的影响。选用硅钾中量元素肥料、碧护营养套餐和降镉灵3种叶面调理剂,分别在长沙县金井镇、黄花镇和望城区茶亭镇受重金属镉污染水稻田开展大田控镉试验。结果表明:喷施叶面调理剂水稻产量得到显著提高;叶面调理剂对土壤中全镉含量影响不显著,但能显著降低土壤有效态镉含量;叶面调理剂能小幅提高土壤pH,但在不同地区表现差异较大;叶面调理剂能降低糙米镉含量,但在镉中度污染稻田,不能降低糙米镉含量到国家限量标准(≤0.2 mg/kg)。施用碧护营养套餐可增加水稻产量,提高土壤pH,降低土壤有效态镉含量,降低糙米镉含量,建议在轻微、轻度镉污染程度稻田进一步示范推广。

关键词: 叶面调理剂, 镉污染, 稻田, 水稻

Abstract:

The aims is to explore the effects of three leaf surface conditioners on the total cadmium content, available cadmium content, and soil pH in paddy soil with different levels of cadmium pollution, and on cadmium content in rice, cadmium content in various tissues of rice, and yield. Three leaf conditioners, silicon potassium medium element fertilizer, Bihu Nutritional Package, and Jiangcadulin, were selected to conduct field cadmium control experiments in paddy fields contaminated with heavy metal cadmium in Jinjing Town, Huanghua Town, Chating Town, and Wangcheng District of Changsha County. The results showed that spraying foliar conditioner significantly improved rice yield. Leaf surface conditioners had no significant effect on the total cadmium content in soil, but could significantly reduce the available cadmium content in soil. Leaf surface conditioners can slightly increase soil pH, but their performance varies greatly in different regions. Leaf surface conditioners can reduce the cadmium content of brown rice, but in moderately polluted rice fields, they cannot reduce the cadmium content of brown rice to national standards(≤0.2 mg/kg). Applying Bihu Nutritional Package can increase rice yield, increase soil pH, reduce available cadmium content in soil, and reduce cadmium content in brown rice. It is recommended to further demonstrate and promote this method in lightly and moderately polluted paddy fields.

Key words: foliar conditioner, cadmium pollution, paddy, rice