After the needles and pods of the peanuts are flowering, they are very seriously damaged by leaf spot, Spodoptera litura, and chalk disease. The leaves are covered with leaf spots and yellowing and falling off, or the leaves are bitten to form bald branches, so that the plants wither and die, the pods are not Full and rot in the ground. Therefore, in the middle and late stages of peanut growth, attention should be paid to the control of leaf spot, Spodoptera litura and chalk disease to protect stems and leaves. The specific prevention methods are as follows:

In the middle and late stages of peanut growth, pay attention to observe the stems and leaves of peanuts, and find that there are green leaf spots on the leaves. It is necessary to spray 3000~4000 times of aqueous solution of difenoconazole and propiconazole, or 800 times of 30% Copper aqueous solution, or 3000~4000 times 43% tebuconazole aqueous solution for prevention and control; when it is found that there is damage to Spodoptera litura (Blackheaded worm) on the leaf, the leaf surface is sprayed 1000 times 1.14% Aviline saline solution, or 1500 times 5% Avi An aqueous solution of bacteriocin, or 1000 times 5% aqueous solution of chlorantraniliprole, or 1500 times of aqueous solution of Helicoverpa armigera nuclear polyhedrosis virus; when brown rot occurs at the base of the stem, and white scorpion is attached, it is infected. For chalk disease, it is necessary to use 1500 times 50% aqueous solution of carbendazim wettable powder, or 1500 times 50% procymidone wet WP solution, or 600 times 78% Boer·manganese zinc wettable powder aqueous solution, or 1000 30% of the aqueous solution of carbendazim, or 1000 times of 50% ethylene sclerotium water dispersion granule aqueous solution, etc., sprayed on the stem base and drenched the roots for control. Spray once every 7~10 days, spray 2~3 times continuously, spray all the stems and leaves evenly, and start to drop the drops of water.