全生物降解地膜的降解效果及其对烤烟产质量的影响

为全生物降解地膜在烤烟生产上的推广应用提供参考,采用田间试验研究全生物降解地膜的降解效果及其对烤烟覆盖栽培产质量的影响。结果表明:采用1m×0.010mm白色全生物降解地膜进行烤烟覆盖栽培的效果最好,产量和产值分别达2 162.70kg/hm~2和50 426.70元/hm~2,分别比PE膜覆盖栽培(2 098.20kg/hm~2和4 8651.90元/hm~2)增加64.50kg/hm~2和1 774.80元/hm~2,增长3.07%和3.65%;上中等烟率增加3.58百分点,节约成本199.20元/hm~2,且烟叶的物理结构适中、化学成分协调;在覆膜135d时,全生物降解地膜的降解率达63%,比PE膜(3.5%)增加59.5百分点,有效解决了环境白色污染问题。

Effects of Full Biodegradable Mulching Film on Degradation,Tobacco Yield and Tobacco Quality

The effects of full biodegradable mulching film on degradation,tobacco yield and tobacco quality were studied by a field test to provide a reference for popularization and application of full biodegradable mulching film in flue-cured tobacco production.Results:The yield and output value of Yunyan 87 under the cultivation pattern of white full biodegradable mulching film with 1 m× 0.010 mm can reach 2 162.7 kg/hm2 and 5 0426.70 Yuan/hm2.The yield,output value and first and medium-class tobacco rate of Yunyan 87 under the cultivation pattern of white full biodegradable mulching film are 64.50 kg/hm2(3.07％),1 774.80 Yuan/hm2 (3.65％) and 3.58％ higher than under the cultivation pattern of PE film respectively.The cost of full biodegradable mulching film is 199.20 Yuan/hm2 lower than PE film.The tobacco leaves of Yunyan 87 under the cultivation pattern of white full biodegradable mulching film have the moderate physical structure and harmony chemical components.The degradation rate of full biodegradable mulching film 135 d after mulching is up to 63％,59.5％ higher than PE film(3.5％).Application of full biodegradable mulching film can solve the environmental white pollution effectively.