地膜在促进增产的同时，带来一系列的污染问题，可降解地膜在一定程度上既能实现增产，又能减少污染。本研究进行了普通地膜和透明、黑色两种全生物可降解膜、裸地栽培玉米对比实验，来探讨和分析生物降解膜的降解性及对土壤含水量、温度和玉米生长的影响。结果表明：全生物降解膜的降解速度明显快于普通膜，其中黑色全生物降解膜略快于透明全生物降解膜。不同覆膜下各个土层的含水量都随着深度增加而增加，其中中层含水量增速最大；三种覆膜的土壤含水量在生长前期无显著差异，到后期透明全生物降解膜和黑色全生物降解膜下土壤含水量越来越接近裸地，与普通膜之间的差距越来越大。3种覆膜在玉米生长的各个时期均能有效提高土壤温度，但增温效果随着土层深度的增加而减弱，且越到后期两种全生物降解膜对土壤的增温效果越弱。覆膜能显著提高玉米的出苗率，加快玉米生育进程，使玉米的株高、茎粗、叶面积以及地上干物质重量增加，在一定程度上有利于经济效益的提高。因此，以全生物可降解地膜替代普通塑料地膜是具有可行性的。

Mulching film brings a series of pollution problems while promoting production increase. Biodegradable mulch can increase production and reduce pollution to some extent. In this study, a comparative experiment between ordinary plastic film, two kinds of full-biodegradable film (transparent film and black film), and bare-field cultivated was conducted to explore and analyze the degradability of biodegradable film and its effects on soil moisture, temperature, and corn growth. The results showed that the degradation rate of the full biodegradable film was significantly faster than that of the ordinary film, and that of the black full biodegradable film was slightly faster than that of the transparent full biodegradable film; the moisture content of each soil layer under different mulch films increased with the increase of depth, and the middle layer water content increased the most; in the early growth stage, there was no significant difference in soil moisture content of the three kinds of mulch films, but in the later stage, the soil moisture content of the transparent full biodegradable film and the black full biodegradable film was more and more close to the bare land and the difference with that of the ordinary film was getting bigger; all the three kinds of mulching films could effectively increase the ground temperature in all stages of corn growth, but the temperature increasing effect weakened with the increase of soil depth, moreover, the temperature increasing effect of the two full biodegradable films was getting weaker in the later growth stage; film mulching could significantly increase the germination rate of corn, speed up the process of corn growth, increase the plant height, stem thickness, leaf area and aboveground dry matter weight of corn, which was conducive to the improvement of economic benefits to a certain extent. Therefore, it is feasible to replace ordinary plastic mulch with full biodegradable mulch.