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中国农学通报 ›› 2016, Vol. 32 ›› Issue (18): 11-16.doi: 10.11924/j.issn.1000-6850.casb16030053

所属专题: 水稻

• 农学 农业基础科学 • 上一篇    下一篇

大田水分管理对控制稻米镉含量的技术研究

杨定清1,雷绍荣1,李 霞1,周 娅1,罗丽卉1,李旭毅2   

  1. (1四川省农业科学院分析测试中心,成都 610066;2四川省农科院作物研究所,成都 610066)
  • 收稿日期:2016-03-07 修回日期:2016-06-06 接受日期:2016-04-25 出版日期:2016-06-28 发布日期:2016-06-28
  • 通讯作者: 杨定清
  • 基金资助:
    公益性行业(农业)科研专项“农产品产供安全过程管控技术研究与示范” (201303088-6);国家农产品质量安全风险评估重大专项“粮油作物产品未知危害因子识别与已知危害因子安全性评估”(GJFP201500701);科技部支撑计划项目“重金属超标农田原位钝化/固定与农艺调控技术研究”(2015BAD05B01)。

Controlling Cadmium Concentration in Rice by Field Water Management Technology

Yang Dingqing1, Lei Shaorong1, Li Xia1, Zhou Ya1, Luo Lihui1, Li Xuyi2   

  1. (1Testing Center of Sichuan Academy of Agricultural Sciences, Chengdu 610066;2Crop Research Institute of Sichuan Academy of Agricultural Sciences, Chengdu 610066)
  • Received:2016-03-07 Revised:2016-06-06 Accepted:2016-04-25 Online:2016-06-28 Published:2016-06-28

摘要: 旨在为降低稻米镉含量的大田水分管理最佳模式提供科学依据。本研究采用大田试验,分别在四川三界镇、濛阳镇和军屯镇采用农户常规管理(CK)、关键期水分管理(模式1)和全生育期淹水(模式2)3种水分管理措施对稻米镉含量控制技术进行研究。结果表明:3个试验地3种处理间水稻株高无显著差异(P>0.05),与CK相比,模式1和模式2处理水稻产量均有所降低,其中模式2条件下水稻产量降低达显著水平(P<0.05);与CK相比,模式1和模式2条件下稻米镉含量均显著降低(P<0.05),但土壤pH和碳酸钙含量均显著增加(P<0.05)。水稻关键期淹水技术是一种既节约用水,保证水稻产量同时又能有效降低稻米镉含量的农艺措施。

关键词: 植烟土壤, 植烟土壤, 有机质, 隆回, 空间变异

Abstract: The purpose was to provide evidence for establishing a scientific water management mode to reduce the cadmium concentration in rice. A field experiment was used to study the effects of three water management modes on cadmium concentration control in rice in Sanjie, Mengyang and Juntun Town of Sichuan Province. The three modes were farmers' routine management (CK), flooding in critical period (mode 1) and whole growth season flooding (mode 2). The results showed that there was no significant difference in plant height (P>0.05) among the three modes in three experimental fields. Compared with CK, the rice yields of mode 1 and mode 2 decreased. Among them, the rice yield of mode 2 significantly decreased (P<0.05). Compared with CK, the cadmium concentration in rice under mode 1 and mode 2 significantly decreased, while soil pH and calcium carbonate concentration of mode 1 and mode 2 significantly increased (P<0.05). Thus, the flooding technology in critical period is a kind of agricultural measure that can save water resource, ensure rice yield, and effectively reduce cadmium concentration in rice.

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