文章摘要
赵首萍, 陈德, 叶雪珠, 张棋, 肖文丹, 伍少福, 张耿苗.石灰、生物炭配施硅/多元素叶面肥对水稻Cd积累的影响[J].水土保持学报,2021,35(6):361~368
石灰、生物炭配施硅/多元素叶面肥对水稻Cd积累的影响
Effects of Lime and Biochar Combined with Silicon/Multi-element Foliar Fertilizer on Cd Accumulation in Rice
投稿时间:2021-06-21  
DOI:10.13870/j.cnki.stbcxb.2021.06.048
中文关键词: 水稻    石灰  生物炭  叶面肥
英文关键词: rice  cadmium  lime  biochar  foliar fertilizer
基金项目:浙江省基础公益研究计划项目(LGN20D01004,LGN21D010003)
作者单位E-mail
赵首萍1, 陈德1, 叶雪珠1, 张棋1, 肖文丹1, 伍少福2, 张耿苗3 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 
rosecome123@163.com 
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中文摘要:
      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。
英文摘要:
      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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