文献类型： 外文期刊

作者： Liao, Min ¹ ; Fang, Zhi-ping ¹ ; Liang, Yu-qi ¹ ; Huang, Xiao-hui ¹ ; Yang, Xu ¹ ; Chen, Shu-sen ¹ ; Xie, Xiao-mei ² ; Xu ¹ ;

作者机构： 1.Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Peoples R China

2.Zhejiang Prov Key Lab Subtrop Soil & Plant Nutr, Hangzhou 310058, Peoples R China

3.Zhejiang Univ, Coll Environm & Resources, Expt Teaching Ctr, Hangzhou 310058, Peoples R China

4.Jiangxi Acad Agr Sci, Inst Soil & Fertilizer & Resource & Environm, Nanchang 330200, Jiangxi, Peoples R China

关键词： Silicon nutrient; Utilization rate of fertilizer; Ecological mechanism; Rice double-cropping system; S158; 3

期刊名称：JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE B （ 影响因子：3.066； 五年影响因子：3.057 ）

ISSN： 1673-1581

年卷期： 2020 年 21 卷 6 期

页码：

收录情况： SCI

摘要： This study was conducted to reveal the effects of silicon (Si) application on nutrient utilization efficiency by rice and on soil nutrient availability and soil microorganisms in a hybrid rice double-cropping planting system. A series of field experiments were conducted during 2017 and 2018. The results showed that Si nutrient supply improved grain yield and the utilization rates of nitrogen (N) and phosphorus (P) to an appropriate level for both early and late plantings, reaching a maximum at 23.4 kg/ha Si. The same trends were found for the ratios of available N (AN) to total N (TN) and available P (AP) to total P (TP), the soil microbial biomass carbon (MBC), microbial biomass nitrogen (MBN), microbial biomass phosphorus (MBP), and the ratios of MBN to TN and MBP to TP, at different levels of Si. Statistical analysis further revealed that Si application enhanced rice growth and increased the utilization rate of fertilizer due to an ecological mechanism, i.e., Si supply significantly increased the total amount of soil microorganisms in paddy soil compared to the control. This promoted the mineralization of soil nutrients and improved the availability and reserves of easily mineralized organic nutrients.