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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:

第52卷

期数:

2024年第9期

页码:

151-159

栏目:

遗传育种与耕作栽培

出版日期:

2024-05-05

文章信息/Info

Title:

Effects of biochar and nitrogen interaction on soil chemical traits，silicon fractions and rice growth

作者:

汪胜; 潘韬文; 陈剑珠; 田纪辉; 蔡昆争

华南农业大学资源环境学院/农业农村部华南热带农业环境重点实验室/广东省生态循环农业重点实验室，广东广州 510642

Author(s):

Wang Sheng; et al

关键词:

水稻; 氮; 生物炭; 土壤肥力; 养分吸收; 硅

Keywords:

-

分类号:

S511.06

DOI:

-

文献标志码:

A

摘要:

为揭示生物炭和氮素互作在水稻生长和土壤改良方面的协同作用，以华航31、美香占2个水稻品种为材料，研究不同氮水平(0、0.1、0.2 g/kg)条件下施用2%生物炭对土壤的化学特性、硅形态转化和水稻植株生长的影响。结果表明，施用生物炭、氮均显著影响植株的干物质积累及叶片的光合作用。在同一氮水平下施加生物炭可显著提高水稻植株地上部生物量，其中0.2 g/kg氮水平配施生物炭(BN2处理)分别使华航31、美香占的地上部生物量增加54.39%、73.39%，分蘖期游离态硅含量分别达到151.3、152.7 mg/kg；而不同氮素水平配施生物炭对叶片的F_v/F_m无显著影响。不同氮水平施加生物炭，均显著提高土壤有机碳含量和土壤有效硅含量，且不同生育期和不同品种一致。此外，在水稻成熟期，不同氮水平配施生物炭显著增加土壤的pH值和植株茎叶硅的积累量。值得注意的是，在生物炭和氮素互作条件下，土壤全碳和有效硅含量呈显著正相关。综上所述，生物炭和氮素互作能改善土壤肥力，促进硅形态转化，促进水稻植株生长和养分吸收，提高有效硅含量，其中以0.2 g/kg 氮水平下施用生物炭效果最为显著。

Abstract:

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备注/Memo

备注/Memo:

收稿日期：2023-04-26
基金项目：国家自然科学基金(编号：31870420)；广东省科技计划(编号：2121A0505030057)。
作者简介：汪胜(1997—)，男，湖南益阳人，硕士研究生，研究方向为农业生态。E-mail：1476078243@qq.com。
通信作者：蔡昆争，博士，教授，主要从事农业生态研究。E-mail：kzcai@scau.edu.cn。

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更新日期/Last Update: 2024-05-05