期刊论文

Effects of biochar on growth and yield of rice in an acidic paddy field: findings from a five-year field trial

中文

生态学报

1000-0933

2020

40

13

4413-4424

10.5846/stxb201911122393

41501325:国家自然科学基金 41761067:国家自然科学基金 2017YFD0200803-01:国家重点研发计划 2016NK2114:湖南省科技计划

本校为第一机构

开展生物炭对农田生态系统长期效应的大田试验对全面评价生物炭调控农田生产力的效果具有重要意义。以南方酸性稻田为对象,采用单因素随机区组设计开展了5年大田试验,探讨不同水平生物炭(0、20、40、60、80 t/hm~2和100 t/hm~2)一次性添加对水稻生长和产量的多年效应。主要结果为:(1)水稻齐穗期的LAI、倒4叶叶绿素含量及地上部干物质积累量和产量均随生物炭添加量增加而增加;(2)生物炭对齐穗期剑叶叶绿素含量以及粒叶比的影响不显著;(3)生物炭显著促进稻田增产的添加量分别为:≥60 t/hm~2(增幅17.0%—23.7%,第1年)、≥40 t/hm~2(增幅15.5%—32.4%,第2年)、20—100 t/hm~2(增幅9.6%—21.8%,第3年...

Biochar has been widely suggested as an effective amendment to improve crop growth and productivity. However, its long-term effects on rice growth and productivity, especially in acidic paddy are less understood. We conducted a fiveyear (2015—2019) field experiment with the single factor randomized block design in an acidic paddy of Changsha, Hunan Province, south China. We aim to investigate (1) how do rice growth and productivity respond to different amount of biochar amendment (i.e., 0 t/hm~2(CK), 20 t/hm~2(B20), 40 t/hm~2(B40), 60 t/hm~2(B...