How to fertilize grapes in autumn management

Key points of autumn fertilization for grapes

Generally speaking, fruit farmers who plant grapes will carry out fertilization management after picking grapes in autumn, but the purpose of fertilization is vague. Some say it is to restore the tree, others say it is to increase the nutrient accumulation in grapes and promote the differentiation of grape flower buds. In fact, these statements are all right. Fertilization in autumn can really play this role after grape planting stops, but the main purpose of fertilization in autumn after grape picking is to maintain the root system and promote its growth.

Applying base fertilizer in autumn: in autumn, the autumn shoots of fruit trees stop growing one after another, and the root development of fruit trees enters the third peak. Fertilization in this period is not only beneficial to nutrient accumulation, but also beneficial to the healing and growth of damaged roots during fertilization. The base fertilizer can be applied before the end of 1 1, and the fertilizer is mainly soil mixed fertilizer with appropriate amount of chemical fertilizer. General 1-2-year-old young apple trees were applied with soil mixed fertilizer 10- 15kg, urea 100g and calcium superphosphate 250g g. For trees, according to the planned yield in the second year, topdressing 0.7 kg of pure nitrogen and 0.7 kg of available phosphorus per 100 kg of fruit. Applying base fertilizer to big trees in autumn is beneficial to high and stable yield of fruit trees. The fertilization method is the combination of furrow application and whole garden spreading application. Strip furrow application is to dig a strip furrow with a width of 30-40 cm and a depth of 50-60 cm at the periphery of the crown, which can be carried out alternately every other year, which can not only expand holes and improve soil, but also meet the nutritional needs of trees.

Reasonable watering: 1 1 can be watered with frozen water once in the middle and late of 10, so as to facilitate the overwintering of fruit trees.

Eliminate pests and diseases

Pest control: it is mainly used to control pests such as LEPIDOPTERA, pear net stinkbug, cotton aphid, shipworm, etc. It can be controlled by 1500 times of clofenurea 3 and 1500 times of Loeb. If leaf-eating pests are serious, pyrethroids can be used to control them.