转光农膜对莴苣生长和霜霉病发生的影响  

Effect of Light Conversion Shed Film on Growth of Lettuce and Occurrence of Downy Mildew

作　　者：刘双清[1] 易图永[1] 马骏[1] 高必达[1] 

机构地区：[1]湖南农业大学生物安全科学技术学院,湖南长沙410128

出　　处：《湖南农业科学》2011年第4期73-75,共3页Hunan Agricultural Sciences

基　　金：湖南省教育厅项目(99A05)

摘　　要：为了筛选出能够提高植物产量并可减轻病害发生的转光农膜,在大棚栽培条件下对转光农膜覆盖和普通农膜覆盖下莴苣的生长和霜霉病发生的情况进行了比较研究。结果表明,有些转光农膜能促进莴苣生长并提高产量,但未发现转光农膜对莴苣霜霉病具有防治作用。与普通农膜相比,转光农膜RB9903-2、RB9901、RB9902和RB9904覆盖下的莴苣植株商品产量分别增加了26.9%、28.1%、24.3%和32.4%;与普通地膜相比,商品产量分别增加了34.0%、35.3%、23.8%和39.8%。To screen light conversion shed films for increasing plant yield and reducing occurrence of diseases,the growth situation of lettuce and occurrence situation of downy mildew covering with light conversion shed film and normal film under greenhouse cultivation conditions were compared.The results showed that some light conversion shed films can promote growth of lettuce and increase yield,but no control effect for downy mildew of lettuce appeared.In comparison with normal films,the yield of lettuce covering with light conversion shed films of RB9903-3,RB9901,RB9902 and RB9904 increased by 26.9%,28.1%,24.3% and 32.4%,respectively;in comparison with normal field films,the yield of lettuce covering with light conversion shed films of RB9903-3,RB9901,RB9902 and RB9904 increased by 34.0%,35.3%,23.8%and 39.8%,respectively.

关 键 词：转光棚膜 莴苣 霜霉病 

分 类 号：TQ320.721[化学工程—合成树脂塑料工业]