玉米全生物降解膜覆盖应用效果研究

Study on the application effect of corn full biodegradable film mulching

通过在昌吉市玉米地试验,研究全生物降解地膜膜降解、增温保墒性能及土下5 cm和15 cm土壤温度动态和对玉米生长发育进程的影响,明确生物降解膜在生产中对普通PE地膜的可替代性。结果表明:全生物降解地膜在覆膜70 d后开始降解,160 d地膜出现大面积碎裂;全生物降解地膜在保温保墒性能上基本和普通PE膜接近,玉米长势、生育期及产量方面与普通PE膜没有显著差异。以全生物降解地膜代替PE地膜应用于昌吉生产具有可行性,对作物无显著影响。

Through the corn field experiment in Changji City,the degradation,warming and moisture conservation properties of fully biodegradable plastic film,the soil temperature dynamics of 5 cm and 15 cm under the soil and its effects on the growth and development process of corn were studied,so as to clarify the substitutability of biodegradable film to ordinary PE plastic film in production.The results showed that the fully biodegradable plastic film began to degrade after 70 days,and a large area of fragmentation occurred after 160 days;The heat preservation and moisture retention performance of fully biodegradable plastic film is basically close to that of ordinary PE film,and there is no significant difference in corn growth,growth period and yield between fully biodegradable plastic film and ordinary PE film.It is feasible to use fully biodegradable plastic film instead of PE plastic film in Changji production,and there is no significant impact on crops.