生物质炭对橡胶园土壤酸度及交换性能的影响

发布时间：2018-02-12 19:27

本文关键词： 热带农业废弃物生物质炭土壤 pH 交换性能　出处：《中国农业科技导报》2017年03期 　论文类型：期刊论文

【摘要】：为合理运用热带农业废弃物改良酸性土壤,采用室内培养试验研究了加入15 g/kg和45 g/kg的椰炭、蔗炭、胶炭和蕉炭对橡胶园土壤酸度及交换性能的影响。结果表明:除加入蔗炭15 g/kg在培养第9 d、30~60 d和蔗炭45 g/kg的处理在培养第45 d外,四种生物质炭在两种添加量下在各培养时间内土壤pH均显著高于对照,土壤p H提升效果为蕉炭胶炭椰炭蔗炭,且不同生物质炭处理之间土壤p H提升效果差异显著;除添加蔗炭15 g/kg的处理外,其余三种生物质炭两种加入量均显著降低了土壤交换性酸和交换性铝含量,而土壤交换性氢仅在加入蔗炭45 g/kg和蕉炭15 g/kg、45 g/kg的处理上显著低于对照;此外,蕉炭、椰炭、蔗炭显著提高了土壤阳离子交换量和土壤盐基饱和度,但胶炭仅提高了土壤盐基饱和度。上述结果表明,蕉炭、胶炭、椰炭和蔗炭等热带农业废弃物生物质炭能提高橡胶园土壤p H,降低土壤交换性酸和交换性铝含量,从而改善橡胶园土壤酸度条件。同时,以上生物质炭也能提高土壤阳离子交换量和土壤盐基饱和度。可见,蕉炭、胶炭、椰炭和蔗炭等热带农业废弃物生物质炭可用于改良热带橡胶园酸性土壤,但不同种类生物质炭及其用量在土壤改良效果上存在差异。
[Abstract]:In order to improve the acid soil with tropical agricultural waste, the coconut charcoal and sugarcane charcoal of 15 g / kg and 45 g / kg were studied by indoor culture experiment. The effects of gum charcoal and banana charcoal on the acidity and exchange properties of the soil in rubber plantation were studied. The results showed that the addition of 15 g / kg of cane carbon at the 9th day of culture and 45 g / kg of carbon on the 9th day of culture were carried out on the 45th day. The soil pH of the four kinds of biomass carbon was significantly higher than that of the control under the two kinds of biomass carbon addition, and the effect of soil pH enhancement was significantly different among different biomass carbon treatments, and the effect of increasing soil pH was as follows: (1) the soil pH of the four biomass carbon was significantly higher than that of the control under the two kinds of biomass carbon addition. Except for the treatment of 15 g / kg sugarcane carbon, the content of exchangeable acid and exchangeable aluminum in soil was significantly decreased by adding the other three kinds of biomass carbon, while the content of soil exchangeable hydrogen was significantly lower than that of the control in addition of 45 g / kg sugarcane carbon and 15 g / kg Canna carbon (45 g / kg). In addition, banana charcoal, coconut charcoal and cane charcoal significantly increased soil cation exchange capacity and soil base-base saturation, but rubber charcoal only increased soil base-base saturation. Biomass charcoal, a tropical agricultural waste such as coconut charcoal and cane charcoal, can improve soil pH, decrease exchangeable acid and exchangeable aluminum content, and improve soil acidity. The above biomass carbon can also improve the cation exchange capacity and the saturation of soil base. It can be seen that some tropical agricultural waste biomass carbon, such as banana charcoal, gum charcoal, coconut charcoal and cane charcoal, can be used to improve the acid soil of tropical rubber plantation. But different kinds of biomass charcoal and its dosage have different effects on soil improvement.
【作者单位】：中国热带农业科学院橡胶研究所;
【基金】：海南省应用技术研发与示范推广专项(ZDXM2015054) 中国热带农业科学院橡胶研究所基本科研业务费专项(1630022013006)资助
【分类号】：S794.1;S714.6

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