How to plant grapefruit 1, select soil
When planting grapefruit, choose soil with deep soil layer, good drainage performance and slightly acidic soil to make it loose and fertile. Sandy loam with good air permeability is the best. Spraying a new high-fat film before planting can slow down the evaporation of water in the soil, isolate pests and diseases, accelerate the root development of seedlings, bury organic fertilizer and inorganic fertilizer, and level the land deeply.
2. Sowing and planting
The planting time of grapefruit is generally in the spring and autumn rainy season, with the best in February-April in spring and 5438+00 in September-June in autumn. The planting density is about 40 plants per mu. Before planting, apply organic fertilizer and appropriate phosphate fertilizer in the planting pit, which will be 20 to 30 cm higher than the ground when returning the soil. After planting, irrigate root-fixing water to increase the contact area between root system and soil and promote root-fixing.
3. Water and fertilizer management
Organic fertilizer and farmyard manure are the main fertilizers in grapefruit fertilization. Pay attention to the fact that fruit trees should not be fertilized with chlorine fertilizer. It is best to fertilize frequently in the young tree period and apply thin fertilizer 5 ~ 6 times a year to supplement the nutrition of grapefruit trees. Organic fertilizer should be applied three times before germination, and basic fertilizer should be applied after picking, with farmyard manure as the best, and the soil should be thoroughly watered to ensure moisture.
4, plastic pruning
The stem of grapefruit should be 40 to 60 cm high, and 5 to 6 main branches should be cultivated. When pruning, leafless branches that grow outside the crown should be kept, and branches that grow too vigorously should be pruned again. Branches that grow vertically should be pruned at the crown, and dry and diseased branches should be pruned in time to reduce nutrient consumption.