会宁县农田地膜使用与残留污染调查研究

Investigate of Plastic Mulching and It's Containmination in Huining Farmland

为了摸清会宁县农田地膜残留状况,依据生态区域及地膜应用特点,进行了会宁县地膜残留现状调查。结果表明,会宁县农田都有不同程度的地膜残留污染,地膜残留量为12.45~211.05 kg/hm^2,且存在区域差异。其污染程度受人为作用、种植作物、地膜厚度、利用次数等因素的影响。

In order to find out the farmland mulch residues of Huining county, we conducted a survey of the plastic film residual status based on the ecological region and membrane application characteristics of Huining county. The result shows that there are different degrees of plastic film farmland pollution at present, the farmland has different degree of membrane residual pollution, and they also have regional difference. The residual amount among 12.45--211.05 kg/hm2, the pollution degree affected at impact of human action, crops, thickness and use number of plastic film.