覆膜对蔗田土壤温湿度及出苗率的影响

Effect of plastic film mulching over sugarcanes seedbeds on soil temperature,soil moisture and seedling emergence rate

采用除草地膜全膜覆盖、普通地膜全膜覆盖、普通地膜半膜覆盖及不盖膜4种覆盖方式,对蔗田土壤水分、温度及甘蔗出苗情况进行比较。结果表明,全膜覆盖可以有效减少土壤水分蒸发,提高水分利用率,保持土壤温度,起到蓄水保墒、保温的作用。4种覆膜处理甘蔗出苗率及分蘖率大小依次为:除草地膜全膜覆盖>普通地膜全膜覆盖>普通地膜半膜覆盖>不盖膜。

The changes of soil moisture, soil temperature, and seedling emergence of sugarcane seedbeds under four different plastic fihn coverage treatments （ complete herbicide fihn mulching, complete conventional fihn mulching, half fihn mulching, and no fihn mulching） were studied. The results shouted that the lull fihn mulching could effectively reduce soil moisture evaporation, increase water use efficiency, maintain soil temperature, and play a role in water storage, preservation, and heat preservation. The seedling emergence rate and tillering rate of the four treatments was as follows ; lull herbicide fihn mulching〉fhll conventional fihn mulching〉halffihn mulching〉no fihn mulching.