Effects of Lime and Biochar Combined with Silicon/Multi-element Foliar Fertilizer on Cd Accumulation in Rice

ZHAO Shouping; CHEN De; YE Xuezhu; ZHANG Qi; XIAO Wendan; WU Shaofu; ZHANG Gengmiao

doi:10.13870/j.cnki.stbcxb.2021.06.048

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Effects of Lime and Biochar Combined with Silicon/Multi-element Foliar Fertilizer on Cd Accumulation in Rice

更新时间：2025-03-12

- Effects of Lime and Biochar Combined with Silicon/Multi-element Foliar Fertilizer on Cd Accumulation in Rice
- Vol. 35, Issue 6, Pages: 361-368(2021)
- 作者机构：
  
  1. 农业农村部农产品信息溯源重点实验室, 浙江省农业科学院农产品质量安全与营养研究所,杭州,310021
  2. 浙江省绍兴市粮油作物技术推广中心,浙江,绍兴,312000
  3. 诸暨市农业技术推广中心, 浙江诸暨,311800
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2021.06.048
  CLC： X53;S511
- Published：2021
- 稿件说明：
移动端阅览
ZHAO Shouping, CHEN De, YE Xuezhu, et al. Effects of Lime and Biochar Combined with Silicon/Multi-element Foliar Fertilizer on Cd Accumulation in Rice[J]. 2021, 35(6): 361-368.
DOI：

ZHAO Shouping, CHEN De, YE Xuezhu, et al. Effects of Lime and Biochar Combined with Silicon/Multi-element Foliar Fertilizer on Cd Accumulation in Rice[J]. 2021, 35(6): 361-368. DOI： 10.13870/j.cnki.stbcxb.2021.06.048.

摘要

为探明钝化剂配合叶面肥对水稻Cd积累的影响，在浙江典型Cd污染稻田，采用小区试验方式分析了对照（CK）、石灰4 500 kg/hm2（LM）、石灰+生物炭1：1混施9 000 kg/hm2（LC）3种模式基础上喷施含Si和多元素（DYS）叶面肥对水稻植株Cd积累的影响。结果表明：与CK相比，LM和LC处理糙米Cd含量分别降低70.1%和88.3%；LM配施含Si和DYS叶面肥使糙米Cd含量进一步降低45.3%和28.9%；LC配施含Si和DYS叶面肥则使糙米Cd含量进一步降低14.5%和13.7%。与LM和LC相比，加喷叶面肥使茎秆—稻谷Cd转运降低42.4%~62.7%，茎秆Cd浓度增加81.9%~123.0%，稻谷Cd浓度降低14.6%~64.2%。与CK相比，LC和LM处理显著提高土壤pH，降低土壤DTPA提取态Cd，且LC处理效果更好；LC处理使壤微生物碳、有机质、脲酶和蔗糖酶活性分别增加6.08%，7.92%，11.90%和0.72%，而LM则分别降低8.33%，14.30%，29.20%和12.10%；LM和LC分别使土壤黏粒含量降低5.73%和4.53%，且LM处理使砂粒含量增加29.70%，粉砂粒含量降低11.70%；LC则使土壤砂粒含量降低1.50%，而粉砂粒含量增加2.17%。综合分析，LC配施含Si或DYS叶面肥能够在有效降低稻米Cd含量的基础上保持土壤质量良性发展。

Abstract

To study the effects of passivating agents combined with foliar fertilizer on Cd accumulation in rice plant

field plot experiments were carried out in typical Cd contaminated soil in Zhejiang. Foliar fertilizer containing Si and multi-element (DYS) were sprayed base on three soil treatment modes

which were control (CK)

lime 4 500 kg/hm2 (LM) and lime+biochar 1∶1 mixture 9 000 kg/hm2 (LC)

respectively. The results showed that compared with CK

Cd content in brown rice decreased by 70.1% and 88.3% in the treatments of LM and LC

respectively. LM combined with foliar fertilizer containing Si and DYS further reduced Cd content in brown rice by 45.3% and 28.9%

respectively

while LC combined with foliar fertilizer containing Si and DYS further reduced Cd content in brown rice by 14.5% and 13.7%

respectively. Compared with LM or LC

the addition of foliar fertilizer reduced straw-grain Cd transfer by 42.4%~62.7%

increased Cd content in straw by 81.9%~123.0%

then reduced Cd content in grain by 14.6%~64.2%. Compared with CK

both treatments of LM and LC significantly increased soil pH

reduced soil DTPA-Cd

and the effect of LC treatment was better. Furthermore

compared with CK

soil microbial carbon

organic matter

activities of urease and sucrose increased by 6.08%

7.92%

11.90% and 0.72% in the treatment of LC

respectively

while the above parameters decreased by 8.33%

140.30%

29.20% and 12.10% in the treatment of LM

respectively. The content of soil clay reduced by 5.73% and 4.53% in the treatments of LM and LC

respectively. In the treatment of LM

the content of sand increased by 29.70% and the content of silty sand decreased by 11.70%. In the treatment of LC

soil sand reduced by 1.50%

while silty sand increased by 2.17%. All results showed that LC or its combine with spraying foliar fertilizer could effectively reduce Cd in rice and maintain the healthy development of soil quality.

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