生物黑炭对酸化茶园土壤的改良效果

吴志丹; 尤志明; 江福英; 王峰; 王成己; 张文锦

生物黑炭对酸化茶园土壤的改良效果

1.
福建省农业科学院茶叶研究所, 福建福安 355015;
2.
福建省农业科学院农业生态研究所, 福建福州 355013

基金项目:

null

详细信息

通讯作者:
尤志明(1964-),男,研究员,主要从事作物栽培研究(E-mail: youzm@faas.cn)

中图分类号: S156; X 712
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出版历程
- 收稿日期: 2012-01-10
- 修回日期: 2012-02-08
- 刊出日期: 2012-02-28

Ameliorating Effect of Biochar on Acidity of Tea Garden Soil

1.
Tea Research Institute, Fujian Academy of Agricultural Sciences, Fu'an, Fujian 355015, China;
2.
Agriculture Ecology Institute, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian 350013, China

摘要

摘要: 采用田间试验,研究施用生物黑炭0(CK)、8、16、32、64 thm-2 5个水平对酸化茶园土壤的改良效果。结果表明,施用不同用量的生物黑炭处理与CK处理相比,0~20 cm土层土壤pH值提高0.19~1.72个单位,土壤交换性酸降低0.79~3.96 cmolkg-1,土壤盐基饱和度提高20.98%~173.67%,土壤阳离子交换量增加0.80~2.46 cmolkg-1;20~40 cm土层土壤pH提高0.05~0.61个单位,土壤交换性酸降低0.20~2.14 cmolkg-1,土壤盐基饱和度提高27.72%~56.51%,土壤阳离子交换量增加0.57~1.12 cmolkg-1。土壤改良效果随生物黑炭施用量的增加而增大,且对0~20 cm土层土壤的改良效果大于20~40 cm土层土壤。施用生物黑炭各处理春茶鲜叶产量分别为CK的106.61%、105.62%、99.89%和99.23%,各处理及与CK间差异均不显著(P0.05)。
- 生物黑炭 /
- 土壤酸化 /
- 土壤改良 /
- 茶园
Abstract: Ameliorating effect of biochar in varying concentrations (i.e., 0, 8, 16, 32 and 64 t hm-2) on acidity of tea garden soils were studied in field trials. The results showed that, as compared with CK (no added biochar), the soil pH increased by 0.19-1.72, the soil exchangeable acid decreased by 0.79-3.96 cmolkg-1, the soil base saturation increased by 20.98-173.67%, and the soil cation exchange capacity (CEC) increased by 0.80-2.46 cmolkg-1 on the 0-20 cm layer of the soils. On the other hand, in the 20-40 cm layer of the soils, the pH of the treatment samples increased by 0.05-0.61, the soil exchangeable acid decreased by 0.20-2.14 cmolkg-1,the soil base saturation increased by 27.72-56.51%, and the soil CEC increased by 0.57-1.12 cmolkg-1. It appeared that the soil ameliorating effect increased with increasing biochar addition. The increase was particularly significant in the 0-20 cm than the 20-40 cm layer of the soils. The yield of the fresh tea leaves was changed 6.61%, 5.62%, -0.11% and -0.77% by the addition of biochar at the rates of 8, 16, 32 and 64 thm-2, respectively. However, no significant differences (P0.05) on tea yields between the treatments and control was found.
- biochar /
- soil acidification /
- soil /
- soil amelioration