花生应用光降解除草地膜覆盖栽培研究

Study on herbicidal photodegradable plastic film in peanut cultivation

对花生除草地膜、光降解除草地膜进行花生田间覆盖效应研究，结果表明：光降解除草地膜和花生除草地膜对田间杂草均有很好的防除效果，盖膜后30天的防效均达到85％以上；光降解除草地膜1号、光降解除草地膜2号在光照下能够自行降解，盖膜120天后的失重率在70％以上，其中光降解除草地膜2号的降解速度比光降解除草地膜1号快；花生应用光降解除草地膜和除草地膜覆盖栽培比普通地膜增产14．13％～30．79％．

The effects of different formulas of photogradable herbicidal plastic film （PHPF） and herbicidal plastic film （HPF） in peanut cultivation were studied in Yangjiang, Guangdong in 2005. The results showed that PHPF and HPF were very effective on controlling weeds in peanut field, which could prevent amount of weed by more than 85%. These PHPF （No. 1 and No. 2） could be resolved under sunlight, the weight loss rate of upper formulas for PHPF was above 70% after 120 days. Compared with PHPF No. 1, PHPF No. 2 has a higher resolution rate;The yield of peanuts covered PHPF or HPF increased 14.13% -30.79% than common plastic film.