文献类型： 外文期刊

作者： Lv, Rujie ¹ ; Wang, Yong ¹ ; Wang, Qiuju ¹ ; Zeng, Yanhua ¹ ; Shang, Qingyin ¹ ;

作者机构： 1.Jiangxi Agr Univ, Jiangxi Key Lab Crop Physiol Ecol & Genet Breedin, Minist Educ, Nanchang, Jiangxi, Peoples R China

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

关键词： straw biochar amendment; Oryza sativa L.; crop residue; grain weight; multiple season

期刊名称：PLANT SOIL AND ENVIRONMENT （ 影响因子：2.328； 五年影响因子：2.197 ）

ISSN： 1214-1178

年卷期： 2022 年 68 卷 7 期

页码：

收录情况： SCI

摘要： Biochar is considered as a soil amendment for enhancing crop productivity. However, limited information is available on the residual effect of biochar application on rice grain yield and yield attributes. In this study, a fixed field experiment was conducted in a double rice-cropping system from 2017 to 2019. The dynamics of rice grain yield and yield attributes were monitored in the six growing seasons with 0, 20, and 40 t/ha biochar application. The results showed that the averaged grain yields in the first four seasons were increased by 2.56-16.84% and 6.15-10.77% with 20 and 40 t/ha biochar application. The trend of increased grain yield in rice with biochar application during the first seasons was mainly attributable to an increase in total biomass, panicles per m(2) and spikelets per panicle. Nonetheless, the grain yields in the sixth season were not influenced by biochar addition due to decreases in panicles per m(2) and spikelets per panicle. Thus, it can be seen that the positive effects of biochar application on rice yield and yield attributes depend on the duration of biochar application.