The invention provides a method for promoting the normal fruit bearing of a lemon tree with
citrus limon yellow
vein clearing viruses. The method includes the following steps that: (a) after the shoots of the lemon tree germinate in each spring, and a
pesticide is sprayed once onto the whole tree when the 40-60% of the leaves of the shoots initially unfold, the spring shoots and flower buds of thewhole tree are sprayed with the
pesticide during days without rain, so that the spring shoots and flower buds can be withered due to dry, wherein the
pesticide comprises 500-1000mg / kg of
sodium naphthalene-1-acetate, 25-100mg / kg of fluoroglycofen-ethyl, 40-120mg / kg of lactofen, and 0.004%-0.006% of d-
limonene, and the pH of the solution is adjusted to 4 to 5; (b) when the length of 40 to 60% of the germinated summer shoots of the lemon tree is larger than or equal to 10 cm, 40-60g of
urea is sparsely sprayed near the
canopy drip line of the lemon tree, the
urea is prepared into a 0.5% solution so as to be poured onto the lemon tree in days without rain; (c) 15 to 20 days after the
urea is applied, 300 to 500g of a
nitrogen-
phosphorus-
potassium mixed
fertilizer is sprayed near the
canopy drip line of the lemon tree, and the
nitrogen-
phosphorus-
potassium mixed
fertilizer is prepared into a 1% solution so as to be applied onto the lemon tree in days without rain. With the method of the invention adopted, the time of the
sprouting of shoots and the
germination of flower buds can be controlled, the growth of the lemon tree can be delayed, so that the summer shoots of the lemon tree cansend forth, and the flowering and fruiting of the lemon tree can be also correspondingly delayed, and therefore, the harm of the
citrus limon yellow
vein clearing viruses can be effectively reduced,and high yield and quality can be ensured. The method is of great practical significance and application value for lemon production areas stricken with the
citrus limon yellow
vein clearing viruses.