烟草秸秆生物有机肥对植烟土壤交换性盐基的影响

Effects of Tobacco Straw Bio-organic Fertilizer on Exchangeable Bases of Tobacco Soil

为保育与修复植烟土壤,合理施用烟草秸秆生物有机肥,实现烟区的可持续发展,采用田间试验的方法,研究了烟草秸秆生物有机肥对植烟土壤交换性盐基的影响。结果表明,不同用量烟草秸秆生物有机肥对植烟土壤交换性盐基和物理性状有明显的影响,其中以施用1500 kg/hm2烟草秸秆生物有机肥保育与修复植烟土壤的效果最好,施用3000 kg/hm2烟草秸秆生物有机肥改良植烟土壤结构的效果最好。因此,生产上应以实际的土壤状况来确定适宜的施肥量,一般状况的植烟土壤以施用1500 kg/hm2烟草秸秆生物有机肥为宜;板结、黏重的植烟土壤以施用3000 kg/hm2烟草秸秆生物有机肥为好。

For the conservation and restoration of tobacco planting soil, the sustainable development of tobacco growing areas, and to determine the application rates of tobacco straw bio-organic fertilizer, a field experiment was conducted to study the effects of tobacco straw bio-organic fertilizer on tobacco soil exchangeable bases. The resulted showed that different amount of tobacco straw bio-organic fertilizer had a significant impact on tobacco soil exchangeable bases and physical properties, with 1500 kg/hm2 tobacco straw bio-organic fertilizer having the best effect on conservation and restoration of tobacco planting soil, 3000 kg/hm2 tobacco straw bio-organic fertilizer having the best effect on soil structure improvement. Therefore, the appropriate amount of fertilizer should be determined based on the actual soil conditions. Application of 1500 kg/hm2 tobacco straw bio-organic fertilizer is appropriate on general condition tobacco soils while application of 3000 kg/hm2 tobacco straw bio-organic fertilizer would be god for heavy clay soils.