蔬菜连作对保护地土壤养分变化的影响  

Effect of continuous vegetable cropping on soil nutrient variation in plastic greenhouse

作　　者：姜佰文[1] 孙玲[1] 王春宏[1] 高妍[1] 王虹[1] 

机构地区：[1]东北农业大学资源与环境学院,哈尔滨150030

出　　处：《东北农业大学学报》2014年第3期85-90,共6页Journal of Northeast Agricultural University

基　　金：黑龙江省自然基金项目(C201106);黑龙江省应用技术研究与开发计划项目(GC13B111)

摘　　要：文章研究哈尔滨市不同种植年限不同层次的保护地土壤养分变化趋势及其积累特征。结果表明，蔬菜保护地土壤随着种植年限的增加，缓效钾和速效磷含量总体呈上升趋势，全磷和速效钾含量呈阶段性变化规律；而全氮和碱解氮含量变化则表现为，在0~20 cm土层中其含量随种植年限增加而增加，20~40 cm和40~60 cm土层中含量随种植年限增加而降低。随着土层深度的增加，其余各种养分含量逐渐降低。It was studied that the soil nutrient variation tendency and accumulation situation in plastic greenhouse with different cultivation years and different soil layers in Harbin City. The results showed that with the increasing of using period of the protect vegetable filed, the content of the slowly released potassium and available phosphorus in each layer were increased with the period of tillage, the total phosphorus and available potassium showed periodical variation in the growing season. But the contents of total nitrogen and alkali-hydrolysable nitrogen in each soil layer were different, in the profile of 0-20 cm soil, which were increased and in the profile of 20-40 cm and 40-60 cm were declined. Other soil nutrient contents were all declined gradually with the soil layer depth increasing.

关 键 词：蔬菜连作 保护地土壤 土壤养分 土壤层次 

分 类 号：S626[农业科学—园艺学]