Effects of Drip Irrigation under Plastic Film and Full Maize Straw Returning with Deep Ploughing Mode on Main Pests and Natural En-emies in Maize Field and Their Prevention and Control Strategies
In order to determine the effects of species and quantity changes of pests and natural en-emies in maize field in full maize straw returning with deep ploughing mode and plastic film drip irri-gation,this experiment carried out a systematic field investigation.The results showed that the occur-rence of Mythimna separate(Walker),Monolepta hieroglyphica and Xylinophorus mongolicus Faust in drip irrigation under plastic film irrigation mode was significantly lower than that in conventional maize field.There was no significant difference in occurrence of underground pests,Ostrinia furnaca-lis(Guenée)and Aphidoidea.The number of M.hieroglyphica was significantly higher than that in conventional maize field,and the number of underground pests was significantly higher than that in conventional maize field.There was no significant difference in the occurrence of O.furnacalis,M.hi-eroglyphica,X.mongolicus and Aphidoidea.There was no significant difference in the species and quantity of the main natural enemies that occurred in the two types of maize fields compared with the conventional planting mode.
maizedrip irrigation under plastic filmfull maize straw returning with deep plough-ingstraw returningpestnatural enemy
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