生物炭、秸秆和有机肥对砂姜黑土改性效果的对比研究

被引：22

作者：

高学振 ^{[1
,2
]}

张丛志 ^{[1
]}

张佳宝 ^{[1
]}

丁宁宁 ^{[1
]}

机构：

[1] 封丘农田生态系统国家实验站土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所)

[2] 中国科学院大学

来源：

土壤 | 2016年 / 48卷 / 03期

关键词：

生物炭; 秸秆; 有机肥; 砂姜黑土; 改性效果;

D O I：

10.13758/j.cnki.tr.2016.03.008

中图分类号：

S156 [土壤改良];

学科分类号：

082802 ;

摘要：

砂姜黑土是广泛分布于我国黄淮海平原、具有多种障碍因子的典型中低产土壤。本研究通过小麦和玉米轮作盆栽试验,研究了生物炭、秸秆和有机肥3种有机物料对砂姜黑土性质的改良效果。结果表明:添加秸秆能显著提高土壤微生物生物量碳(MBC)和可溶性有机碳(DOC)含量,减小土壤线性延展系数(COLE);添加生物炭对砂姜黑土MBC和DOC影响不显著,但显著减小土壤COLE。对土壤磷脂脂肪酸(PLFA)含量的分析发现,添加秸秆显著提高了小麦灌浆期和玉米抽雄期土壤总磷脂脂肪酸、细菌、真菌、放线菌和腐生真菌的含量,而添加生物炭和有机肥对土壤总磷脂脂肪酸、细菌、真菌、放线菌、腐生真菌和真菌/细菌影响不显著。综上,生产实践中3种有机物料添加应根据各地砂姜黑土主要障碍因子不同而灵活选择。

引用

页码：468 / 474

页数：7

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