浙江农业科学 ›› 2024, Vol. 65 ›› Issue (9): 2023-2027.DOI: 10.16178/j.issn.0528-9017.20230040

• 粮食作物 • 上一篇    下一篇

镉污染稻田中农艺措施类安全利用综合技术研究

杨晓磊1(), 王站付1, 陈宇佳2, 陆萍2, 刘哲辉3, 严淑娴1, 金思哲1   

  1. 1.上海市农业技术推广服务中心, 上海 201103
    2.上海市嘉定区农业技术推广服务中心, 上海 201800
    3.上海劲牛信息技术有限公司, 上海 200333
  • 收稿日期:2023-01-10 出版日期:2024-09-11 发布日期:2024-09-11
  • 作者简介:杨晓磊(1982—),女,江苏无锡人,高级农艺师,硕士,主要从事耕地土壤、农业环保等技术研究与推广工作,E-mail:yxlgzyx@126.com
  • 基金资助:
    上海市科技兴农项目(2020-02-08-00-08-F01449)

Study on safety utilization integrated techniques of agronomic measures in Cd contaminated paddy fields

YANG Xiaolei1(), WANG Zhanfu1, CHEN Yujia2, LU Ping2, LIU Zhehui3, YAN Shuxian1, JIN Sizhe1   

  1. 1. Shanghai Agro-Technology Extension& Service Center, Shanghai 201103
    2. Shanghai Jiading Agro-Technology Extension& Service Center, Shanghai 201800
    3. Shanghai Jinniu Information Technology Co., Ltd., Shanghai 200333
  • Received:2023-01-10 Online:2024-09-11 Published:2024-09-11

摘要:

通过在上海市某镉污染稻田开展田间试验,研究镉污染稻田土壤的不同农艺措施类安全利用综合技术对土壤和植株中镉的影响。在大田试验中,设置不同处理:品种替换+优化施肥(处理1)、品种替换+水分调控+优化施肥(处理2)、品种替换+水分调控(处理3)不同农艺措施组合,与常规水稻种植(CK)进行对照,探讨不同综合技术下对土壤、水稻糙米及秸秆中不同形态Cd迁移转化的影响。结果表明:与CK相比,各处理的土壤Cd和有效态Cd含量、糙米中镉含量均有所下降,与试验前比,处理2土壤全量Cd和有效态Cd含量下降最为显著,分别下降12.86%、18.33%。处理1、处理2、处理3糙米中的Cd富集系数分别下降43.18%、51.90%、25.74%。与CK相比,处理1水稻产量提高了4.9%。综上所述,选用Cd低积累水稻品种、配施生物质炭有机肥和叶面阻控剂能在保持水稻产量基础上,降低水稻中的Cd含量,调节Cd在作物中的富集与转运。

关键词: 镉, 安全利用综合技术, 农艺措施, 土壤, 水稻

Abstract:

By the experiment in a cadmium-contaminated paddy field in Shanghai to study the effects of different agronomic measures on the cadmium content in soil and plants. In the field test, different treatments were sets: variety replacement + optimal fertilization (treatment 1), variety replacement + water regulation+ optimal fertilization (treatment 2), variety replacement + water regulation (treatment 3). Different agronomic combinations measures were compared with conventional rice planting (CK) to explore the effects of different comprehensive technologies on the migration and transformation of different forms of Cd in soil, brown rice and straw. The results showed that compared with CK, the contents of Cd and available Cd in soil and cadmium in brown rice in all treatments decreased. Compared with before the test, the contents of total Cd and available Cd in soil in treatment 2 decreased most significantly, by 12.86% and 18.33%, respectively. The Cd enrichment coefficient of brown rice in treatment 1, 2 and 3 decreased by 43.18%, 51.90% and 25.74%, respectively. Compared with CK, rice yield in treatment 1 increased by 4.9%. In conclusion, the selection of rice varieties with low Cd accumulation, combined application of biochar organic fertilizer and foliar blocking agent can reduce the Cd content in rice and regulate the enrichment and transport of Cd in crops on the basis of maintaining rice yield.

Key words: cadmium, safety utilization integrated technology, agronomic measures, soil, rice

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