设施栽培对土壤环境质量的影响

Influence of installation cultivation on soil environmental quality

针对设施栽培引起的土壤环境质量下降问题,对甘肃省白银市水川镇不同使用年限（1、5、10、15 a）的12个日光温室的不同深度0~20 cm、20~40 cm的土壤进行研究,比较分析了不同种植年限日光温室土壤的环境质量.结果表明：日光温室土壤pH值随着种植年限延长出现逐渐降低的趋势;与邻近露地菜田相比,不同种植年限日光温室土壤全盐和硝酸盐含量显著高于菜田土壤,且随着种植年限的增加逐渐升高.根据土壤全盐、硝酸盐含量及pH值的变化规律,表明温室土壤环境质量随着种植年限的增加而逐渐下降.

Aiming at the decreasing of soil environmental quality caused by installation cultivation,an experiment was carried out in the Shuichuan Town,Baiyin City,Gansu Province.The soil of 0~20 cm and 20~40 cm layers was collected from 12 greenhouses that were used for 1,5,10 and 15 a,the soil environmental quality of each greenhouse was analyzed.The results showed that the pH value of greenhouse soil decreased with increasing of planting year.In addition,compared with open vegetable field,total salt and nitrate of greenhouse soil were both higher,and increased with planting year.All the results indicated that the soil environmental quality decreased with planting year.