Occurrence and Control Countermeasures of Wheat Yellow Dwarf Disease

Wheat yellow dwarf disease is a viral disease mainly transmitted by aphids, and its damage is quite serious in some years. When the symptom is susceptible to disease at the seedling stage, the leaves lose green and turn yellow, and the plants are seriously dwarfed, and the leaves of seriously diseased plants often cannot survive the winter, or cannot jointing and heading after overwintering. The dwarfing of the later susceptible plants was not obvious, and the upper young leaves began to yellowing from the leaf tip and gradually expanded downwards. The yellowing leaves were bright yellow, bright and shiny, and there were yellow stripes between the veins. Only the flag leaves of the susceptible plants at panicle stage turned yellow, and the leaves of some varieties turned purple after infection. Disease-resistant or disease-tolerant varieties were selected for control of ①. ② removes weeds in and around the field. ③ strengthened the cultivation management of water and fertilizer, and foliar spraying Tianda 2116 and Tianda Yufeng could significantly enhance the plant disease resistance.