Grape Growing Techniques: How Should You Fertilize to Make Grapes Sweeter?
How should you fertilize to make grapes sweeter? Please explain the fertilization methods. To make grapes sweeter, you can refer to the following fertilization methods: 1. Focus on base fertilizer. Around October, that is, late autumn, is the best time to apply base fertilizer to grapes. When applying base fertilizer, pay attention to applying organic fertilizer together with microbial bacterial fertilizer, applying 4000 jin to 5000 jin of decomposed organic fertilizer per mu, and 2 to 3 kg of Jinbaobei microbial bacterial fertilizer; in addition, do not neglect the combination of chemical fertilizers (mainly nitrogen and phosphorus fertilizers), applying 15 to 20 kg of urea or 30 to 40 kg of ammonium sulfate per mu. The base fertilizer should be buried into the soil together with deep plowing. This fertilization method of organic fertilizer plus microbial bacterial fertilizer plus chemical fertilizer not only provides quick-acting nutrients to the grapes, but also improves the soil micro-ecological environment and plays a role in improving the soil. Reason: The beneficial microorganisms in Jinbaobei microbial bacterial fertilizer, through the secondary metabolites produced by their own life activities, activate the soil, increase the number of soil aggregates, enrich the soil, increase the absorption rate of grape roots, and make full preparations for the flowering and fruiting of grapes.
How should you fertilize to make grapes sweeter? Please explain the fertilization methods.
To make grapes sweeter, you can refer to the following fertilization methods:
I. Focus on base fertilizer
Around October, that is, late autumn, is the best time to apply base fertilizer to grapes. When applying base fertilizer, pay attention to applying organic fertilizer together with microbial bacterial fertilizer, applying 4000 jin to 5000 jin of decomposed organic fertilizer per mu, and 2 to 3 kg of Jinbaobei microbial bacterial fertilizer; in addition, do not neglect the combination of chemical fertilizers (mainly nitrogen and phosphorus fertilizers), applying 15 to 20 kg of urea or 30 to 40 kg of ammonium sulfate per mu. The base fertilizer should be buried into the soil together with deep plowing. This fertilization method of organic fertilizer plus microbial bacterial fertilizer plus chemical fertilizer not only provides quick-acting nutrients to the grapes, but also improves the soil micro-ecological environment and plays a role in improving the soil. Reason: The beneficial microorganisms in Jinbaobei microbial bacterial fertilizer, through the secondary metabolites produced by their own life activities, activate the soil, increase the number of soil aggregates, enrich the soil, increase the absorption rate of grape roots, and make full preparations for the flowering and fruiting of grapes.
II. Timely and reasonable topdressing
1. Topdressing before bud break: Carry out in early spring when buds begin to swell. At this time, quick-acting nitrogen fertilizer should be the main component, supplemented by microbial bacterial fertilizer, and root topdressing is preferable. The application amount accounts for about 10% to 15% of the annual fertilization amount. This topdressing will promote root absorption after the grapes enter the bleeding period. The application of Jinbaobei bacterial fertilizer can also increase the bud break rate, enlarge flower clusters, make new shoots grow robustly, and thereby increase yield. If sufficient base fertilizer was applied in autumn, topdressing at this stage can be omitted.
2. Topdressing before flowering: Spray fertilizer on the leaves two weeks before flowering. This time, boron fertilizer is mainly sprayed, and Jinbaobei microbial sweetening agent can also be sprayed. This sweetening agent not only plays a role in preserving flowers and fruits, but also improves the transformation of photosynthetic substances, and has a good effect on grape flowering, pollination, fertilization, fruit setting, and flower bud differentiation of the current year. It has a very good effect on preserving flowers and fruits for fresh-eating varieties that easily shed flowers and fruits, such as Kyoho, Zuijinxiang, and Yuxuan No. 4.
3. Topdressing during the young fruit stage: After flower drop, apply topdressing during the young fruit expansion stage, mainly nitrogen fertilizer, combined with phosphorus and potassium fertilizers. Combined with deep plowing of the land, bury the fertilizer 30 to 50 cm away from the plant, in shallow trenches or holes 15 to 20 cm deep. In addition, spray Jinbaobei sweetening agent once. This topdressing can not only promote the expansion of young fruits, but is also extremely important for the flower bud differentiation of new shoots and secondary shoots. Spraying the sweetening agent can promote earlier coloring of grapes and sugar accumulation.
4. Topdressing during the berry ripening stage: Spray microbial sweetening agent. When the fruit begins to color, apply a large amount of Jinbaobei sweetening agent mainly containing potassium and calcium. Do not apply nitrogen fertilizer in orchards with sufficient fertilizer at this stage. The fertilization method can be either root application or leaf spraying. Among these, Jinbaobei microbial sweetening agent plays an important role in increasing berry sugar content, improving fruit quality, and promoting the maturation of new shoots; it can increase sugar content by 0.8 to 1.5 degrees, and can promote earlier coloring and prolong storage period.
III. Issues to note in field operations. In addition to reasonable base fertilizer and timely topdressing, some aspects of field operations should not be ignored.
1. Base fertilizer must be applied after being thoroughly decomposed, especially chicken manure. It is best to use Jinbaobei fertilizer fermentation agent for decomposition and fermentation before applying it into the field. Base fertilizer should not always be applied in the same place, as this can easily hinder root growth and cause rot and death.
2. When topdressing, try to avoid damaging thick roots, and be sure to water thoroughly once after fertilization. According to the fertilizer content of the soil in the orchard, appropriately add deficient elements, especially some medium and trace elements.
In addition, be sure to combine this with reasonable pruning and clearing of field weeds. Reasonable fertilization is the key to increasing grape yield and sweetness. Among these, the application of organic fertilizer and Jinbaobei microbial bacterial fertilizer increases absorbable trace elements in the soil and various organic acids secreted by microorganisms. These are the main factors for increasing sugar accumulation in grapes and producing bright color.
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