How to Prevent and Treat Aphid Disease in Rice

Rice aphid disease is a species-borne disease, and A. meliloti is spread in rice husks along with rice seeds. When nematode rice germinates, the nematode begins to invade the growth point of the rice seedlings and feeds, grows and reproduces at the growing point. Seed soaking with pesticides is the best method for killing the A. nematophila in rice glume. Once missed this period, A. nemanilis is difficult to control with drugs after invading the growing point.
How to prevent Aechinia sclerotiorum? (1) Implement quarantine: Prevent spreading of seed in infected area. (2) Seed selection and selection of disease-free seeds; the establishment of disease-free fields to breed disease-free varieties, and gradually reduce the wards. (3) Seed disinfection: 1 soaking seed soup. Rice seeds were first pre-soaked in cold water for 24 hours, then transferred to 45-47°C warm water for 5 minutes, then moved to 52-54°C warm water for 10 minutes, and finally germinated after cooling in cold water. 2 Pharmaceutical soaking, can use 80% of dichlorvos 0.5 kg of emulsifiable concentrate, 500 kg of water, soaking for 48 hours, remove and wash the net liquid, germination sowing. Or use 40% souryl acetate 500 times soaking for 24 hours, the control effect is good, and harmless to rice seeds; if 400 times liquid, it has certain inhibition effect on rice seed germination. (4) Removal of pathogens: The diseased plants were found to be removed in a timely manner and burned or buried in a concentrated manner. When the diseased straw was not stacked and used as compost material, it must be fully decomposed.

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