甘蔗光降解地膜与普通地膜不同覆盖方式对比试验

Comparative Experiment of Photodegradable and Nondegradable Plastic Film under Different Mulching Sugarcane Pattern

通过新植甘蔗采用光降解地膜与普通地膜不同覆盖方式对比试验,结果表明:两种地膜全膜覆盖较半膜覆盖与不盖膜具有较好的增温保湿作用,农艺性状表现较好,增产增糖效果明显。全膜覆盖平均蔗茎产量10595kg/667m2,较半膜覆盖增产1748 kg/667m2、增19.8%,差异达5%显著水平;较不盖膜增产2650 kg/667m2、增33.4%,差异达1%极显著水平。试验实施90d未发现光降解膜降解破口迹象,降解效果不理想。

The comparative experiment of photodegradable and nondegradable plastic film under different mulching patterns （full covering and half covering, no covering） at plant crop of sugarcane was conducted. The results indicated that there was a good effect of warming moisture under full plastic film covering pattern, the sugarcane agronomic trait, sugar content and sugar yield were improved, cane yield was increased by 19.8%, up to 10595 kg/667m2 in comparison with half covering pattern; and it was increased by 33.4%, i.e., 2650 kg/667m2, in comparison with no covering. Mulching film pattern were better in keeping soil temperature and moisture, but the cane yield and sugar yield were significantly higher than that of row covering and no covering practice. However, light degradation of photodegradable plastic film was not found after treating 90 days.