Fertilization methods of Green Plum

Green plum is a unique fruit, its taste is sour and sweet, and its varieties are more than the price, in addition to some edible varieties, there are some for ornamental potted plants. It is widely cultivated in our country, so how to apply fertilizer in green plum planting? Come and have a look with the editor.

1. Early application of base fertilizer

Each growth period of green plum is relatively early, and the growth stops relatively early, so the application time of base fertilizer is generally carried out immediately when the new shoots stop growing from August to month. The base fertilizer is mainly organic fertilizer, calcium magnesium phosphate fertilizer and hydrated lime should be applied in acidic soil, and the specific amount of fertilizer should be determined by tree potential, tree age, fruit amount and so on. Generally, when 1000-1500 kg of organic fertilizer, 30-30 kg of superphosphate and 10-20 kg of potassium sulfate are applied per mu, ditch fertilization can be used to cover the soil after fertilization, while young trees generally apply 10-15 kg of farm manure per tree.

2. Suitable application of pre-flowering fertilizer

Pre-flowering fertilizer is mainly to ensure the green plum blossom and fruit and shoot nutrient supply, mainly available nitrogen fertilizer, with phosphorus and potassium fertilizer, generally applied in December-January. The amount of fertilizer application should also be determined according to the tree strength and the amount of base fertilizer, the plants with sufficient base fertilizer and strong tree strength can be applied less, while the plants with insufficient base fertilizer and weak tree strength should be applied more. In addition, spraying borax solution before flowering can also significantly increase the fruit setting rate.

3. Skillfully apply strong fruit fertilizer

From April to May, when the fruit is hardening, strong fruit fertilizer should be skillfully applied to the plants with large amount of fruit and weak tree potential, but not to the plants with strong tree potential. Generally, 0.3-0.4 kg of urea, 0.5-0.7 kg of potassium sulfate or 0.5-1 kg of compound fertilizer are applied to each plant, or 0.2% potassium dihydrogen phosphate plus 0.3% urea solution can be used for extra-root topdressing from April to May, foliar spraying every 10 days or so, 2-3 times in a row.

4. Fruit picking fertilizer

There is not much nutrient left in the plant after fruit ripening. In order to accelerate the accumulation of tree nutrients and lay the foundation for high yield in the coming year, fruit-picking fertilizer should be applied in time after fruit harvest. Generally, when urea 1 kg, potassium sulfate 1 kg, calcium superphosphate 1 kg or compound fertilizer 0.5-1 kg is applied to each adult tree, the fertilizer can be poured or sprinkled on the topsoil inside and outside the tree plate, and the application should be uniform. For young trees, 10-12 kg of feces from each tree can be applied and a small amount of urea can be poured on the ground below the crown.

The above is the introduction of Qingmei fertilization method, hope to help you, want to know more related knowledge, please pay attention to us.