地膜残留时空分布特征分析  

Study on spatial and temporal distribution characteristics of plastic film residue

作　　者：吴湘琳 马红红 马兴旺 单娜娜 杨志莹 WU Xianglin;MA Honghong;MA Xingwang;SHAN Nana;YANG Zhiying(Key Laboratory of Northwest Oasis Agro-Environment,Ministry of Agriculture and Rural Affairs/Institute of Soil Fertilizer and Agricultural Water Conservation,Xinjiang Academy of Agricultural Sciences,Urumqi 830091,China;Xinjiang Agricultural Green and Low Carbon Production Technology Innovation and Application Center,Urumqi 830091,China;Xinjiang Cultivated Land Science and Technology Innovation Center,Urumqi 830091,China)

机构地区：[1]新疆农业科学院土壤肥料与农业节水研究所/农业农村部西北绿洲农业环境重点实验室,乌鲁木齐830091 [2]新疆农业绿色低碳生产技术创新与应用中心,乌鲁木齐830091 [3]新疆耕地科技创新中心,乌鲁木齐830091

出　　处：《新疆农业科学》2024年第7期1786-1792,共7页Xinjiang Agricultural Sciences

基　　金：国家自然科学基金项目“多元农业经营主体地膜累积治理行为选择机制研究”(41967025)。

摘　　要：【目的】研究覆膜5、10、15、20、25、30年0~40 cm土层残膜量变化特征。【方法】(1)每个采样点5个样方,每个样方规格100 cm×100 cm,逐层测定0~40 cm土层残膜量;(2)地膜回收情况调查。【结果】(1)5~30年0~40 cm土层土壤残膜量排序20>15>5>10>25>30年,介于92.83~195.13 kg/hm^(2),平均值128.88 kg/hm^(2);(2)随着年限增加0~10 cm土层残膜量排序为5>10>30>15>25>20年,残膜量差异不显著;10~20 cm土层残膜量排序依次为15>20>30>10>5>25年,15、20年残膜量高,较5、10、25、30年差异显著;20~30 cm土层残膜量排序依次为15>20>10>25>5>30年,15、20年残膜量高,与5、30年对比有显著性差异;30~40 cm土层残膜量排序依次为20>25>5>15>30>10年,20、25年残膜量高,与5、10、15、30年有显著差异。(3)随着土层深度增加5年各土层之间残膜量差异不显著;10年0~30 cm各土层残膜量差异不显著,30~40 cm较其它土层残膜量差异显著;15年10~20 cm与0~10 cm、30~40 cm土层残膜量差异显著,30~40 cm与10~20 cm,20~30 cm土层残膜量差异显著;20~30年各土层之间残膜量差异不显著。【结论】(1)随着覆膜年限的增加,5~30年0~40 cm土层内残膜量呈先增后减的趋势,在覆膜20年时达到峰值,呈略下降的趋势;(2)随着覆膜年限增加5~30年0~10 cm土层残膜量呈先减后增的趋势,总体量呈下降趋势;10~20 cm土层残膜量呈先增后减的趋势,总体变化不明显;20~30 cm土层残膜量呈先增后减的趋势,总体量呈略下降趋势;30~40 cm土层残膜量呈先增后减的趋势,总体呈上升趋势。(3)随着土层深度增加,5~30各年份残膜量呈下降趋势,残膜主要在0~30 cm累积,30~40 cm也有少量残片:覆膜5、10年0~10 cm土层为主要累积区;覆膜15、25、30年10~20 cm土层为主要累积区;覆膜20年0~10与10~20 cm土层残膜量基本相同。【Objective】To study the variation characteristics of residual film amount in soil layer of 5,10,15,20,25,30 a 0-40 cm.【Methods】(1)Each sampling point had 5 quadrats,each quadrat size was 100 cm×100 cm,and the residual film amount of 0-40 cm soil layer was measured layer by layer.(2)Investigation of the basic situation of plastic film recycling.【Results】(1)The order of soil residual film in 0-40 cm soil layer was 20>15>5>10>25>30 a,ranging from 92.83-195.13 kg/hm^(2),with an average of 128.88 kg/hm^(2).(2)With the increase of years,the order of residual film amount in 0-10 cm soil layer was 5>10>30>15>25>20 a,and the difference of residual film amount was not significant.The order of residual film amount in 10-20 cm layer was 15>20>30>10>5>25 a,and the residual film amount in 15 and 20 a was higher than that in 5,10,25 and 30 a,and the difference was significant.The order of residual film amount in 20-30 cm soil layer was 15>20>10>25>5>30 a,and the residual film amount in 15 and 20 a was high,which was significantly different from that in 5 and 30 a.The order of residual film amount in 30-40 cm soil layer is 20>25>5>15>30>10 a,and the residual film amount in 20 and 25 a is higher,which is significantly different from that in 5,10,15 and 30 a.(3)With the increase of soil depth:there is no significant difference in residual film amount between soil layers in 5 a;The residual film amount of 10 a 0-30 cm soil layer was not significantly different,and the residual film amount of 30-40 cm soil layer was significantly different from that of other soil layers.There were significant differences in the residual film amount between 10-20 cm and 0-10 cm and 30-40 cm soil layers at 15 a,and significant differences between 30-40 cm and 10-20 cm and 20-30 cm soil layers.There was no significant difference in the amount of residual film between the soil layers from^(2)0 to 30 a.【Conclusion】(1)With the increase of mulching years,the amount of residual film in the 5-30 a 0-40 cm soil layer first increased and then

关 键 词：土壤 地膜残留 时空分布 

分 类 号：S19[农业科学—农业基础科学]