生物炭对玉米苗期生长、养分吸收及土壤化学性状的影响

被引:229
作者
张晗芝 [1 ,2 ]
黄云 [1 ]
刘钢 [2 ]
许燕萍 [2 ,3 ]
刘金山 [2 ,3 ]
卑其诚 [2 ,3 ]
蔺兴武 [2 ]
朱建国 [2 ]
谢祖彬 [2 ]
机构
[1] 西南大学资源环境学院
[2] 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
[3] 中国科学院研究生院
关键词
生物炭; 玉米; 氮; 磷; 有机碳;
D O I
10.16258/j.cnki.1674-5906.2010.11.010
中图分类号
X173 [环境植物学];
学科分类号
摘要
采用田间盆栽试验,研究了生物炭(biochar)对玉米(Gramineae)苗期生长(60 d)及土壤化学性质的影响。结果表明,在玉米苗期的前33 d,生物炭(48 t.hm-2)对玉米株高的生长有显著抑制作用,但随着玉米的生长发育,生物炭的抑制作用逐渐消失。收获时(播种后60 d),生物炭对玉米植株干质量,N、P养分的吸收量没有显著影响;生物炭(12、48 t.hm-2)能显著提高土壤全N、有机碳质量分数,但对土壤全P、有效P、pH值没有显著影响。土壤全N、有机碳质量分数与生物炭用量(0、2.4、12、48 t.hm-2)为显著正相关(n=12,p<0.01)。
引用
收藏
页码:2713 / 2717
页数:5
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