摘要
为了给烟区合理使用地膜栽培提供依据,进行了不同覆膜方式对植烟土壤微生物含量变化影响的试验。结果表明:一垄双行烟各处理植烟土壤中的细菌、真菌、放线菌的含量均高于一垄单行烟各处理;全生育期覆膜对植烟土壤中硝化细菌的生长有抑制作用,在烟株生长前期对氨化细菌的生长有促进作用,后期则有抑制作用;35d揭膜则对硝化细菌、氨化细菌的生长都有一定的促进作用。地膜覆盖在烤烟生长中期能明显地提高植烟土壤中硝态氮和铵态氮的含量。
Different plastic film mulching patterns were tested in tobacco cultivation to study the effect of different mulching patterns on microorganism quantity in tobacco soil for rational utilization of plastic film in tobacco cultivation.The results showed that the bacterium,fungus and actinomyces quantity in different treatments with double-row on single ridge was higher than treatments with single-row on single ridge.The plastic film mulching during total tobacco growth period had the inhibitory effect on growth of nitrobacteria,the promoting effect on growth of ammonifying bacteria at early growth stage of tobacco plants but the inhibitory effect on growth of ammonifying bacteria at later growth stage of tobacco plants.The film uncovering after 35d had certain promoting effect on growth of nitrobacteria and ammonifying bacteria.The plastic film mulching could obviously increase the content of nitrate nitrogen and ammonium nitrogen at middle growth stage of tobacco plants.
出处
《贵州农业科学》
CAS
北大核心
2011年第12期97-99,共3页
Guizhou Agricultural Sciences
基金
贵州省烟草专卖局项目"贵州山地特色优质烟叶的研究与开发"(2007-04)
关键词
烤烟
地膜覆盖
覆膜方式
土壤微生物
tobacco
plastic film
mulching pattern
soil microorganism
