How to fertilize the vineyard with the least effort (correct method of fertilizing the vineyard at different stages)

According to the growth and development characteristics of grapes throughout the year, in order to achieve the goal of high and stable yields, the following fertilization plan is specially formulated for all stages of grape production.

1. Topdressing before germination (germination fertilizer)

For those who applied base fertilizer in autumn : use 40-80kg of calcium ammonium zinc borate or calcium ammonium nitrate or potassium ammonium nitrate, apply by digging trenches or flushing with water or spreading after watering.

If no base fertilizer has been applied in autumn : 60-80kg of potassium nitrate and phosphate + 25-50kg of Spirax (or 40-60kg of organic-inorganic compound fertilizer). Mix the fertilizers evenly and apply them in trenches. For flushing, 80kg of potassium nitrate and phosphate can be used alone.

2. Topdressing before flowering

Base fertilizer applied in autumn : 40-60kg of nitrate, phosphorus and potassium.

If no basal fertilizer has been applied in autumn : 40kg of ammonium nitrate, boron zinc, calcium or ammonium nitrate potassium + 50-80kg of water-retaining and soil-loosening potassium sulfate 18-18-18.

Nitrogen fertilizer alone should not be used during this period, especially for Kyoho varieties, as using nitrogen fertilizer alone will cause flowers and fruits to fall off.

3. Topdressing during young fruit stage

40kg of high-tower nitrate-sulfur-based 16-6-18 + foliar spraying of calcium erythritol + zinc sulfate (2-3 times) + potassium dihydrogen phosphate can effectively prevent large and small grains and physiological fruit drop.

From this point on, you can spray calcium glycosides on the leaves when applying pesticides, or you can use it every other time.

4. Topdressing during the berry expansion period

20-40kg of rare earth potassium nitrate, or 30-40kg of composite microbial agent for flushing, apply 1-2 times, and use flushing fertilizer and composite microbial agent alternately once each.

5. Topdressing before fruit picking

Using 40kg potassium ammonium nitrate + spraying sugar alcohol calcium on the leaves can effectively improve the hardness, color and storage time of the fruit.

6. After fruit picking (base fertilizer)

Tianji water-retaining and soil-loosening type 18-18-18 or triammonium sulfate 80-120kg + compound microbial fertilizer 120-150kg + spirulina 40-50kg.

After the grapes enter the fruiting period, you must pay attention to supplementing calcium fertilizer. The grapes' demand for calcium is basically the same as their demand for potassium.

During the year-round fertilization of grapes, it is necessary to apply autumn base fertilizer heavily, which can effectively supplement the lack of nutrients in the grape tree during the growth period.

We can use the nearly half a year from fruit harvesting to germination in the following year to fully cultivate the root system, regulate the soil structure, and increase the looseness, air permeability and nutritional activity of the soil.

[ Summary ] This fertilization plan focuses on base fertilizer and combines it with reasonable topdressing. The target yield is above 4,000 jin/mu. During the topdressing process, the topdressing varieties should be flexibly adjusted based on the growth conditions of grapes in each season.