河南农业科学Issue(10)：46-50,5.
不同前作对烤烟土壤健康状况的影响
Effect of Different Preceding Crops on Soil Health of Flue-cured Tobacco
摘要
Abstract
For the soil samples of tobacco field with different previous crops in Sanmenxia area ,the soil micro-ecological health ,including the number of nitrogen function bacteria ,the enzyme activi-ty and the content of organic carbon ,was analyzed .The results showed that the trend of bacteria number ,organic carbon content ,sucrose enzyme activity and cellulose enzyme activity was same , and the order was sweet potato>oil-seed rape>chilli>corn>tobacco .The previous crops had the following sequence according to the amylase activity :sweet potato>corn>rape>chilli>tobacco . As for soil organic carbon content ,only sweet potato ,chilli and rape reached the requirements of high quality tobacco production while the organic carbon content of corn and tobacco soils was low .The analysis of function bacteria showed that the ammonification bacteria ,nitrification bacte-ria ,nitrogen-fixing bacteria and denitrifying bacteria of chilli ,sweet potato ,corn and tobacco were the most .The difference from the stubble ,to a certain extent ,affected the change trend of nitro-gen transformation bacterial colony group quantity ,among them ,the sweet potato ,rape ,chilli stubble more conducive to soil NO3- (suitable for root absorption ) transformation .Overall ,com-pared with continuous crops ,the soil health indicators of crop rotation remain at a high level , w hich is helpful to maintain soil quality and can relieve the continuous cropping obstacles effec-tively in tobacco field .关键词
前作/烟草/土壤健康机制/细菌/有机碳Key words
preceding corps/tobacco/soil health mechanism/bacteria/organic carbon分类
农业科技引用本文复制引用
董宁禹,焦永吉,杨建新,王永,蒋士君..不同前作对烤烟土壤健康状况的影响[J].河南农业科学,2013,(10):46-50,5.基金项目
河南省烟草公司科技攻关项目 （）
