改治结合,根除蝗害的关键因子是“水”!

改治结合,根除蝗害的关键因子是“水”。其主要原因为:(1)水灾是为东亚飞蝗创造发生地和转移到临近地区危害的关键因子;(2)东亚飞蝗产卵的适宜的土壤含水量为10%～20%(沙土为10%～12%,壤土为15%～18%,粘土为18%～20%);(3)先涝后旱,飞蝗成片;(4)黄(河)患是东亚飞蝗蝗害发生的源泉。南水北调东线工程的实施,有利于滨湖(库)蝗区东亚飞蝗的持续控制。

Water is the key factor in management of the Oriental migratory locust

Water is the key factor for controlling the Oriental migratory locust. The reasons are as the following: (1) flood creates the breeding area for the Oriental migratory locust outbreak; (2) the suitable water contents of soils for the Oriental migratory locust oviposition are 10%～20% although there are some variation in different types of soil (sand: 10%～12%, rich soil: 15%～16%, sticky soil:18%～20%); (3) drought after flood results in the Oriental migratory locust outbreaks seriously; (4) flooding of Yellow River is the source of Oriental migratory locust outbreak in the region. the water conservancy project for transferring the water from the South (Yangtze River) to the North has been under construction. This project not only relaxes the scarcity of water in the North Region, but also is useful for controlling and stabilizing the water level of the following lakes: Hongzehu, Luomahu, Nansihu, Dongpinghu as well as Beidagang reservoir. Then the relevant locust breeding areas nearby the mentioned lakes will be reduced by managing water, reclaiming waste land, improving farm tillage and reforestation. The Oriental migratory locust plagues in these regions will be under sustainable control in the future.