不同蔬菜生产模式对日光温室土壤质量的影响

Effect of organic,low-input and conventional production model on soil quality in solar greenhouse vegetable growing system

有机农业作为常规农业的一种替代模式,其对土壤及作物的影响研究逐渐受到学术界的关注。该文通过对日光温室有机、无公害和常规生产模式的比较试验,分析有机生产模式对土壤养分、土壤微生物碳氮以及土壤酶活性的影响。结果表明,经过6年的试验,有机生产模式可显著提高土壤全碳、全氮含量以及土壤微生物量碳、氮含量,并提高土壤主要酶的活性,各项指标均表现为有机模式优于无公害模式优于常规模式。有机生产模式能够显著提高土壤质量,有利于土壤的可持续利用。3种生产模式下夏茬番茄产量有机模式高于无公害模式高于常规模式,且随着种植年限的增加有机模式秋茬作物产量呈增加趋势。

There has been increased scientific interest in the organic framing system which is one alternative to conventional agriculture. A long-term greenhouse soil of organic, low-input and conventional farming systems was studied, contrast analyses of the effects of organic farming system on soil nutrients, soil microbial biomass carbon and nitrogen and soil enzyme activities were made. The results showed after six-year experiments, the application of organic fanning system could significantly increase soil total carbon and nitrogen content, and soil microbial biomass carbon and nitrogen content. The soil enzyme activities were improved. The performance indicators were organic system 〉 low-input system 〉 conventional system. The application of organic farming system could significantly improve soil quality and be conductive to the sustainable use of soil. The order of the yields of summer tomatoes was organic system 〉 low-input system 〉 conventional system. The autumn crop yields of organic system increased with planting years.