【摘 要】
：
对沈阳市大民屯镇蔬菜生产基地温室番茄栽培条件下0~30 cm土层土壤DTPA浸提态微量元素含量的调查表明,温室土壤DTPA浸提态Mn、Cu、Zn含量高于相邻的露地菜田,0~20 cm土层DTPA
【机 构】
：
中国科学院沈阳应用生态研究所,中国科学院沈阳应用生态研究所,沈阳农业大学土地与环境学院 辽宁沈阳110016,辽宁沈阳110016,辽宁沈阳110161
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对沈阳市大民屯镇蔬菜生产基地温室番茄栽培条件下0~30 cm土层土壤DTPA浸提态微量元素含量的调查表明,温室土壤DTPA浸提态Mn、Cu、Zn含量高于相邻的露地菜田,0~20 cm土层DTPA-Fe含量低于露地土壤。与露地菜田相比,高量施肥条件下温室土壤DTPA-Zn富集是微量元素变化的一个主要特征,11年和5年温室土壤0~20 cm土层DTPA-Zn平均含量分别是露地菜田的4.0和4.8倍。温室栽培条件下高量施用有机肥、土壤pH降低及土壤Eh变化是引起土壤DTPA浸提态微量元素变化的主要因素。
The investigation on the contents of trace elements (DTPA) in soils of 0-30 cm soil layer under the greenhouse tomato cultivation conditions in the vegetable production base of Damintun Town in Shenyang City showed that the DTPA content of Mn, Cu and Zn in greenhouse soil was higher than that of the adjacent In open field vegetable fields, DTPA-Fe content in 0-20 cm soil layer was lower than that in open soil. Compared with open field vegetable fields, DTPA-Zn enrichment in greenhouse soil under high-level fertilization is a major feature of trace element changes. The average DTPA-Zn contents in 0-20 cm soil layers in 11-year and 5-year greenhouses were respectively Field 4.0 and 4.8 times. High-level application of organic manure under greenhouse cultivation decreased soil pH and soil Eh, which was the main factor that caused the change of soil trace elements in DTPA.
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