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当前位置: 首页 > 文章 > 云南丽江典型玉米种植区地膜残留研究 湖南农业科学 2013 (3) 64-66
Position: Home > Articles > Residual Plastic Film in Typical Maize Planting Areas in Lijiang City of Yunnan Province Hunan Agricultural Sciences 2013 (3) 64-66

云南丽江典型玉米种植区地膜残留研究

作  者：
康平德;胡强;鲁耀;雷宝坤;和根强;王朝文
单  位：
云南省农业科学院农业环境与资源研究所;云南省农业科学院高山经济植物研究所
关键词：
云南丽江;玉米种植区;地膜残留
摘  要：
分别对云南丽江典型玉米种植区连续覆膜≤5a、5～10a、10～20a和>20a的玉米山地的地膜残留量进行了调查研究,结果表明:覆膜年限对土壤中残膜含量有显著影响,覆膜年限越长,地膜残留量越高。连续覆膜≤5a、5～10a、10～20 a和>20a的玉米山地的平均残膜量分别为17.00、28.21、38.71、44.71kg/hm2,且土壤中的残膜数量分别为215万、357万、491万、567万片/hm2。土壤中残留地膜主要集中在0～20cm的表层土壤中,占残留总量的82.4%～87.4%,而20～30cm土壤层的残膜量很少,仅占12.6%～17.6%。不同覆膜年限地块的大部分残膜均为中(4～25cm2)、小块膜(<4cm2),占残膜总量的91.0%～92.8%,大块膜(>25cm2)只占残膜总量的7.2～9.0%;且覆膜年限越长,小块膜(<4cm2)数量越多。
译  名：
Residual Plastic Film in Typical Maize Planting Areas in Lijiang City of Yunnan Province
作  者：
KANG Ping-de1,HU Qiang1,LU Yao2,LEI Bao-kun2,HE Gen-qiang1,WANG Zhao-wen1(1.The Institute of Alpine Economic Plant,Yunnan Academy of Agricultural Sciences,Lijiang 674100,PRC;2.The Institute of Agricultural Environment and Resources,Yunnan Academy of Agricultural Sciences,Kunming 650205,PRC)
关键词：
Lijiang city of Yunnan province;maize planting area;residual plastic film
摘  要：
The residual quantity of plastic film in maize fields where were mulched with agricultural plastic film for less than 5 years,5 ~10 years,10 ~20 years and more than 20 years in typical maize planting areas in Lijiang city of Yunnan province was studied respectively.The results showed that the number of years mulched with plastic film had significant influence on content of residual plastic film in soil that the longer the mulching year is,the higher the residual content of plastic film obtain.The average residual content of plastic film in maize fields where were mulched with agricultural plastic film for continuing less than 5 years,5~10 years,10~20 years and more than 20 years was 17.00,28.21,38.71 and 44.71 kg/hm2,respectively;moreover,the residual quantity of plastic film in where was 2.15,3.57,4.91 and 5.67 million pieces/hm2,respectively.The most of residual plastic film distributed in 0-20 cm of surface soil,which accounts for 82.4% ～87.4% of total residual quantity;there were less residual plastic film in 20 ~30 cm of soil layer,which only accounts for 12.6 ～17.6% of total residual quantity.In each filed with different mulching years,the most of residual plastic film were medium size(4 ～25 cm2) or small size(<4 cm2),which accounts for 91.0% ～92.8% of total residual quantity,and large size of residual plastic film(>25 cm2) only accounts for 7.2～9.0% of total residual quantity.Moreover,the longer the mulching years are,the more the number of small size of plastic film is.

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