Recently, the grapes have been ushered in the listing period. At this time, the management before the listing is the key to ensuring the quality of the fruit. Senior agricultural technician Song Taiyu said that the management during this period was mainly divided into three aspects: water and fertilizer management, pest management and fruit management.
Fertilization of water and fertilizer management: mainly nitrogen, phosphorus and potassium compound fertilizers, and the mature age tree generally applies about 1 kg of compound fertilizer per plant. The ripening fertilizer is applied when the fruit is close to maturity, and is usually sprayed with 0.3% potassium dihydrogen phosphate solution or root phosphorus and potassium compound fertilizer.
Watering: If the soil is dry, water it in time to prevent cracking. During the fruit ripening period, the soil moisture should be reduced, and the water holding capacity should be kept at 50% to 60% to increase the sugar content and storage stability of the fruit.
Pest management diseases: downy mildew can be sprayed with 68% Jinlei or moldy grams 600-700 times; white rot and anthrax can be mixed with 10% Shiga 2000 times or 50% carbendazim 600-800 times .
Pests: The grape-winged moth is mainly harmful to the leaves. It is controlled during the adult shoots and the newly hatched larvae, and sprayed once every half month for 3 times. The agent may be selected from pyrethroid pesticides, such as 20% chlorpyrifos 2500 times liquid; the chafer is mainly harmful to the fruit, and the methionin pesticide 2000 times liquid can be sprayed for prevention and control during the adult pest period.
When the fruit is managed to reach the size of the pea, the small fruit, the inferior fruit, the deformed fruit, the diseased fruit, the dense fruit and the wounded grain are removed. After the thinning, the fruit pieces are even and uniform, and 60 to 80 grains are retained per ear. After the fruit is fixed, the insecticide should be sprayed once. After the liquid is dried, the high-quality double-layer paper bag is used to pack the bag in time, and the bag is removed in time to promote coloring.
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