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通过测试分析凉州区建棚年限5~14年的日光温室土壤养分、理化性质及重金属残留现状,并将各项指标与露地大田相比较,总体表现是建棚年限在5年以上的日光温室土壤养分明显增加,土壤有机质、全氮、全磷、碱解氮、有效磷、速效钾均表现明显的累积,分别比露地农田高出3.18 g kg-1,0.48 g kg,8.73 mg kg-1,98.38 mg kg-1,45.83 mg kg-1和230.88 mg kg-1;土壤微量元素也比露地大田明显增加,同时土壤盐分及重金属砷、汞的残留也呈现明显的累积趋势,但尚未超出阻碍作物生长的指标范围。
By analyzing and analyzing the soil nutrients, physico-chemical properties and heavy metal residues in solar greenhouse with a built-up period of 5 to 14 years in Liangzhou District, and comparing the indicators with open field, the overall performance is to build a solar greenhouse with a shelf life of more than 5 years Soil nutrients significantly increased, and soil organic matter, total nitrogen, total phosphorus, available nitrogen, available phosphorus and available potassium all showed obvious accumulation, which were 3.18 g kg -1, 0.48 g kg and 8.73 mg kg -1 respectively , 98.38 mg kg-1, 45.83 mg kg-1 and 230.88 mg kg-1, respectively. The contents of soil trace elements and arsenic and mercury in soil also showed a significant trend of accumulation, Indicators of crop growth.