地膜不同覆盖方式对保护地黄瓜病害及生长发育的影响

Effects of different mulching methods on disease and growth of cucumber in green houses

用对比试验探讨了高畦畦面、畦沟地膜全覆盖(Ⅰ),高畦畦面地膜覆盖、畦沟不覆盖(Ⅱ),高畦畦面、畦沟地膜全不覆盖(CK)三种处理方式对兰州市红古区大棚春夏早熟黄瓜四种病害的发生及植株生长发育的影响问题。研究表明:Ⅰ、Ⅱ两种处理的四种病害的发病率和病情指数均明显低于对照;试验小区的产量各为102.24 t/hm2和80.745 t/hm2,比对照71.16 t/hm2分别增产30.4 %、21 %;且发病较晚,缓苗时间比对照(7～10 d)可分别少2～3 d和1～2 d;产品的上市时间也可分别提前10 d和3 d。

The study deals with the effects of three different mulching methods, ridges and gullies fully mulched method(as TREAT1), only ridges mulched (gullies unmulched) method (asTREAT2), and both ridges and gullies unmulched method (as CHECK), on diseases of Pseudoperonospora cubensis, Pseudomonas syringae PV lachrymans, Botrytis cinerea, Sclerotinia sclerotiorum and the growth of a prematuwe variety of cucumber grown during spring and summer in green houses at Honggu District of Lanzhou. The results showed that the incidence and disease index of the four diseases in TREAT1 and TREAT2 were obviously lower than those in CHECK, and the yields of TREAT1 (102.24 t/hm2) and TREAT2 (80.745 t/hm2) have been increased by 30.4 % and 21.0 % respectively in comparison with CHECK (71.16 t/m2). And also, the diseases in TREAT1 and TREAT2 came later than CHECK, the time for the seedlings to revive could be shortened by 2～3days and 1～2days respectively than CHECK (normally 7～10 days), and the products could be sold on market 10days and 3days earlier.