张掖绿洲玉米制种田地膜残留特征及对土壤理化性状的影响分析
张晋 , 王兴 , 李佳丽 , 刘鹏 , 何淑萍 , 白静 , 王娟 , 缪纯庆 , 王托和
甘肃农业大学学报 ›› 2023, Vol. 58 ›› Issue (04) : 218 -225.
张掖绿洲玉米制种田地膜残留特征及对土壤理化性状的影响分析
Analysis on characteristics of plastic film residue in maize planting fields in Zhangye Oasis and its effect on soil physical and chemical properties
目的 阐明地膜残留量对玉米田土壤理化性状的影响,为地膜的科学使用和残膜防治提供理论指导。 方法 对张掖绿洲玉米制种田连作5 a后(2023年3月)的10个样点土壤中地膜残留量和塑化剂主要成分进行检测,分析地膜残留量区域分布特征,并对各样点的塑化剂含量、土壤理化性质进行测定,分析地膜残留量对土壤理化性状的影响。 结果 土壤中地膜残留量与塑化剂含量成正相关,随着地膜污染的加重,土壤pH值呈上升趋势,有机质、全氮、全磷和全钾下降趋势明显,地膜残留对玉米制种田土壤理化性状产生明显的影响。 结论 张掖绿洲玉米制种田残膜污染较严重,严重危害到土壤健康,需科学防治残膜污染。
Objective The study aimed to elucidate the impact of residual plastic film on the physical and chemical properties of corn field soil,providing theoretical guidance for scientific use of plastic film and the control of its residue. Method The residual amount of plastic film and the main components of plasticizers in the soil of 10 sampling sites in the field for corn seed production in Zhangye Oasis were detected after 5 years of continuous cultivation (March 2023).The regional distribution characteristics of plastic film residual amount was analyzed and the content of plasticizers and soil physicochemical properties at various points were measured,followed by analyzing the impact of plastic film residue on soil physicochemical properties. Result There was a positive correlation between the residual amount of plastic film in soil and the content of plasticizers.With the plastic film pollution aggravated,the soil pH value showed an upward trend,while the organic matter,total nitrogen,total phosphorus,and total potassium showed a significantly downward trend.Plastic film residue had a significant impact on the physical and chemical properties of soil in the fields for corn seed production. Conclusion The residual film pollution in the field for corn production in Zhangye Oasis is relatively serious,which will generate much damage to soil health.It is advisable to scientifically prevent and control the pollution of the residual film.
residual amount of plastic film / regional distribution / soil nutrients / corn seed production field
M=10 000(W1+W2+W3)/3
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甘肃省重点研发计划-农业类项目(20YF3NG038)
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