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1.甘薯灾后大田管理(1)及时清沟排渍。洪水过后,立即开机或人工排涝,抓紧清沟除渍、起垄,以增加土壤通透性,确保甘薯正常生长,最大限度地降低损失。进一步理清田间沟系,做好“三沟”配套,预防二次涝渍。甘薯是起垄栽培,容易形成局部渍水,水退之后要及时清沟排渍,尽快使田间干燥。(2)及时防病虫。水灾之后一般都是病虫发生快的时期,要及时防治病虫大发生。渍害之后,虫害往往发生多,应加强虫害防控,特别是防治甘薯食叶害虫甘薯卷叶虫和甘薯天蛾,两害虫水灾后极易爆发,应注意
1 sweet potato field management after the disaster (1) timely gully row of stains. Immediately after the flooding, start the machine or drain water manually, and pay close attention to clearing the ditch for stains and ridging so as to increase the soil permeability and ensure the normal growth of the sweet potato and minimize the loss. Further clarify the field ditch, do a good job, “three ditch” supporting, to prevent secondary waterlogging. Sweet potato is ridging cultivation, easy to form local waterlogging, water back after the timely ditch cleaning, as soon as possible to make the field dry. (2) timely pest control. After the floods are generally the period of rapid occurrence of pests and diseases, pest control in time to prevent a large occurrence. After waterlogging, pests often occur more, should be strengthened pest control, especially sweet potato leafworm sweet potato leafworm and sweet potato moth prevention and control, two pests vulnerable to the outbreak after the flood, should pay attention to