秸秆还田下配施石灰、尿素和腐熟剂 对水稻Cd 吸收累积的影响研究

doi:10.11924/j.issn.1000-6850.casb17110004

中国农学通报 ›› 2019, Vol. 35 ›› Issue (7): 1-6.doi: 10.11924/j.issn.1000-6850.casb17110004

所属专题：水稻

• 农学农业基础科学 • 下一篇

秸秆还田下配施石灰、尿素和腐熟剂对水稻Cd 吸收累积的影响研究

李霞¹, 杨定清¹, 李旭毅², 周娅¹, 罗丽卉¹, 谢永红¹, 王棚¹

1.四川省农业科学院分析测试中心;2.四川省农业科学院作物研究所

收稿日期:2017-11-01 修回日期:2019-01-21 接受日期:2018-02-24 出版日期:2019-03-04 发布日期:2019-03-04
通讯作者: 杨定清
基金资助:
四川省科技计划项目“秸秆还田对水稻重金属镉积累影响的研究”(2016JY0140)；四川省科技创新苗子工程项目“秸秆还田下不同石灰梯度对水稻Cd吸收累积的影响研究”(2018039)。

The effects of combined application of straw with lime, urea and compost on Cd accumulation of rice

Received:2017-11-01 Revised:2019-01-21 Accepted:2018-02-24 Online:2019-03-04 Published:2019-03-04

摘要/Abstract

摘要： 为安全利用秸秆资源,选取成都平原德阳绵竹市Cd污染稻田为研究对象,开展小区试验,研究秸秆还田配施石灰、尿素和腐熟剂对土壤特性以及2个水稻品种(低富集水稻品种川优6203、高富集水稻品种宜香2115)的Cd 吸收累积和产量的影响。结果表明：与对照相比,秸秆还田配施石灰后土壤pH值显著提高(P<0.05),土壤DOC含量轻微增加,土壤有效态Cd含量有效降低,配施尿素后土壤pH值、DOC含量和有效态Cd含量轻微增加,而配施腐熟剂则能有效降低土壤pH值,显著提高DOC含量和土壤有效态Cd含量(P<0.05)；秸秆还田配施石灰后,稻米Cd含量减少13.1%～14.4%,而配施尿素和腐熟剂后,稻米Cd含量则分别增加3.4%～13.1%和21.2%～35.6%；秸秆还田配施石灰、尿素和腐熟剂均能增加水稻产量,增幅分别为5.7%～7.1%、9.4%～9.7%和10.6%～11.4%。综合考虑水稻Cd 吸收累积以及产量,成都平原秸秆还田配施石灰技术是较为理想的秸秆安全利用模式。

Abstract: To make use of straw resources safely, we select the Cd-contaminated paddy in Mianzhu County of Sichuan Province as the research object to carry out plot experiment, and study the effects of returning straw added with lime, urea and straw-decomposing inoculant on soil properties, Cd accumulation and yields of two rice varieties (low-enriched rice variety‘Chuanyou 6203’and high-enriched rice variety‘Yixiang 2115’). The results showed that compared with the control (CK), returning straw added with lime significantly increased soil pH value (P<0.05), slightly increased the concentration of soil dissolved organic carbon (DOC), and decreased the concentration of soil available Cd; returning straw added with urea slightly increased soil pH value, DOC, and available Cd concentrations, while returning straw added with straw-decomposing inoculant decreased soil pH value, significantly increased soil DOC and available Cd concentrations (P<0.05). Compared with CK, returning straw added with lime decreased the rice Cd concentration by 13.1%-14.4%, while straw returning combined with urea and straw- decomposing inoculant application increased the rice Cd concentration by 3.4%-13.1% and 21.2%-35.6%, respectively. Straw returning with lime, urea and straw- decomposing inoculant increased the yields of rice by 5.7%- 7.1% , 9.4%- 9.7% and 10.6%- 11.4% , respectively. Considering Cd absorption and yields of rice, we suggest that straw returning with lime is an ideal model for the safe utilization of straw in Chengdu Plain.

李霞,杨定清,李旭毅,周娅,罗丽卉,谢永红,王棚. 秸秆还田下配施石灰、尿素和腐熟剂对水稻Cd 吸收累积的影响研究[J]. 中国农学通报, 2019, 35(7): 1-6.

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秸秆还田下配施石灰、尿素和腐熟剂对水稻Cd 吸收累积的影响研究

The effects of combined application of straw with lime, urea and compost on Cd accumulation of rice

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秸秆还田下配施石灰、尿素和腐熟剂 对水稻Cd 吸收累积的影响研究

The effects of combined application of straw with lime, urea and compost on Cd accumulation of rice

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秸秆还田下配施石灰、尿素和腐熟剂对水稻Cd 吸收累积的影响研究