生物有机肥对烟株根系及土壤理化性质的影响
2021-06-17钟泽林冯文龙余伟张宗锦闫芳芳周欢
钟泽林 冯文龙 余伟 张宗锦 闫芳芳 周欢



摘要 通过田间试验,研究了生物有机肥对烟株根系及土壤理化性质的影响。结果表明,施用全元生物有机肥对不同肥力土壤上烟株不同生育期根系生长均有促进作用;可有效调整不同肥力土壤的酸碱度,提高土壤含水量,增加土壤有机碳、微生物量碳和微生物量氮;有效调节不同肥力土壤中根际微生物的多样性和群落结构。其中,全元生物有机肥2 250 kg/hm2+复合肥255 kg/hm2是改善土壤理化性质、增加根系生长、改善烟株生长的土壤生态环境的最佳标准。
关键词 生物有机肥;根系;土壤;理化性质
中图分类号 S572文献标识码 A文章编号 0517-6611(2021)02-0138-05
doi:10.3969/j.issn.0517-6611.2021.02.038
开放科学(资源服务)标识码(OSID):
Effects of Biological Organic Fertilizer on Tobacco Plant Roots and Physical and Chemical Properties of Soil
ZHONG Zelin,FENG Wenlong, YU Weiet al
(Panzhihua Branch of Sichuan Tobacco Corporation,Panzhihua,Sichuan 617099)
Abstract Field experiments were conducted to study the effects of biological organic fertilizer on tobacco plant roots and physical and chemical properties of soil. The results showed that the application of multipleelements biological organic fertilizer in different fertility soils could promote the root growth at different stages of tobacco plant, can effectively adjust the different fertility of the soil acidity, enhance soil water content, increase soil organic carbon, microbial biomass carbon and microbial biomass nitrogen, regulate microbial diversity and community structure in soil rhizosphere of different fertility. The multipleelements biological organic fertilizer 2 250 kg/hm2 + compound fertilizer 255 kg/hm2 was the best standard of improving soil physical and chemical properties, increasing root growth, improving the soil ecological environment of the growth of tobacco plant.
Key words Biological organic fertilizer;Roots;Soil;Physical and chemical properties
攀枝花市位于四川西南部,是四川省重要煙区,烤烟产业已成为攀枝花市农业产业重要支柱之一。自20世纪90年代,烤烟恢复性发展以来,长年连作和化肥农药大量使用等原因,导致植烟土壤质量不断退化,现有土壤不仅不能为烤烟发展提供良好的生态基础,反而成为烤烟发展的瓶颈[1-4]。针对土壤质量退化,大量研究提出了合理轮作与休耕养息的修复措施,但受到耕地资源、交通条件、种植成本及土地流转等因素的影响,合理轮作与休耕养息难以实现[5-6]。为了有效解决土壤质量退化,全市学习先进烟区经验,开展了土壤冬地深翻、绿肥种植、农家肥施用、秸秆还田等技术推广[7-11],同时攀枝花从研发新型全元生物有机肥途径出发,施用全元生物有机肥改善土壤理化性质及调整根际微生物,借以实现减少烤烟化肥施用量、提高烟株根系生长活力的目……p>
