摘要
残留农膜对土壤性状具有重要影响,如破坏土壤结构、危害作物正常生长发育并造成农作物减产,进而影响到农业环境。通过对临沂市义唐镇农膜残留量不同地块的土壤性状进行对比分析,得出,随着土壤中农膜残留量的增加,土壤团聚体含量、抗蚀指数、团聚度、土壤有机质含量、N、P、K含量、土壤微生物量均表现出下降的趋势,且CK与DK3间差异达到了显著水平(p<0.05),而土壤分散率并没有表现出相同趋势。这种规律在表层土壤(0～20cm)表现的更为明显。
The residue of mulching plastic film in the field has already become a negative factor that affected agricultural environment, which destroyed soil structure and harmed growth of crop. In this paper, influences of mulch film on soil properties were investigated through experiment with different mulch film levels in Yi tang town. Results showed that aggregate size, anti-erosion index, aggregate index, soil organic matter content ,soil available nutrient contents（N, P, K） and soil microbe number reduced with the increase of the amount of mulch film residues, especially that of CK was obviously larger than that of DK3 （p〈0.05）, but the disperse index did not show the same tendency. The trend was more obvious at 0-20 cm layer than other layers.
出处
《生态环境》
CSCD
北大核心
2008年第5期1853-1856,共4页
Ecology and Environmnet
基金
山东省自然科学基金项目(Y2007E10)
关键词
残留农膜
土壤性状
团聚体
有机质
微生物
mulch film residues
soil properties
aggregates
organic matter
microbe
