The following fertilizers can be applied to home-grown grapevines: available nitrogen fertilizer, boron fertilizer, compound fertilizer, and microbial fertilizer.
1. Quick-acting nitrogen fertilizer
Grapes like fertilizer very much. In order to make the plants grow quickly, you must apply a sufficient amount of fertilizer. When the plants just start to sprout in early spring, apply quick-acting nitrogen fertilizer directly. Spread the fertilizer 10-20 cm away from the roots to prevent root burns and help the grapes grow new branches.
2. Boron fertilizer
Grapes are top-dressed two weeks before flowering. At this time, external fertilizer is mainly applied. The fertilizer is mainly boron fertilizer, and microbial sweeteners can also be applied. , Reasonable top dressing can promote better photosynthesis of grapes, and promote later flowering, pollination, fertilization, and fruit setting.
3. Compound fertilizer
After the grape flowers wither, the young fruit begins to expand. At this time, the demand for nutrients is large. In order to promote better results, nitrogen, phosphorus and potassium compound fertilizers should be applied. Fertilizer should be combined with plowing the soil, or digging holes for top dressing to avoid burning the roots.
4. Microbial fertilizer
When the grapes begin to color, top-dressing fertilizer is also required. Only with sufficient nutrients can the fruit quality be improved and the fruit ripened quickly. At this time, the main application is to apply potassium and calcium. Elemental fertilizers must not only be applied to the roots, but also diluted and sprayed on the leaves.
Key points for planting grapevines
1. Choose good soil. The suitable soil for grapes is fertile sandy loam or sandy soil with a pH between 5.5-8. Saline soils and heavy clay soils are not suitable. If the soil conditions are poor, you can also choose to plant them in pots.
2. The planting time is appropriate. Grape planting time is generally in early spring, from late March to early May. The temperature in this season is suitable, which is conducive to rooting and producing a developed root system. Planting too early or too late is not conducive to survival.
3. Sunshade and windproof. In the early stages of planting, shading measures should be taken, such as shade nets, etc., to reduce light intensity. At the same time, it is also necessary to prevent strong winds from damaging the seedlings by using windproof nets or walls.
4. Prune appropriately. After planting, the grape seedlings need to be initially pruned to facilitate the formation of the main trunk. Mature grapes should also be pruned regularly as needed to control tree vigor, ensure ventilation and light transmission, and promote fruiting.