The grapes grow big and black five times.

Many flower friends raise grapes on their own balcony, the fruit is always sparse, not enough, how to deal with it? In fact, grape cultivation and fertilizer and water management are related to the tree potential, yield and quality, as well as the harvest in the coming year, so it is necessary to apply fertilizer cautiously and make good use of five key fertilizers.

1. Sprouting fertilizer

Generally, people apply nitrogen fertilizer before the grape sprouts, so that the grapes can sprout neatly, the leaves are thick, and the inflorescences are large and strong. If the trees are vigorous and not dry in spring, fertilization should be avoided so as not to cause new shoots to grow.

2. Enlargement and fatness

After setting the fruit of the grape, apply the fruit from mung beans to big soybeans. Give priority to nitrogen fertilizer and apply phosphorus and potassium fertilizer at the same time. The amount of fertilizer should be large, it is generally recommended to use organic liquid fertilizer for fruits and vegetables, diluted 500 times to irrigate the root, once a week, can achieve very good results.

3. Accelerating ripening fertilizer

Potassium sulfate was applied 20-30 days before grape ripening, and once again when the grape berries began to soften and had not yet been colored.

4. Yuezi fat

After the grape harvest, pay close attention to the application of potassium dihydrogen phosphate to restore tree potential, promote flower bud differentiation and lay the foundation for a bumper harvest in the coming year. The general concentration is 0.5%, not too strong, which affects the differentiation of grape flower buds.

5. Overwintering fertilizer

From August to September, grapes were applied after harvest, mainly organic fertilizer, plus calcium fertilizer and a small amount of nitrogen, phosphorus and potassium fertilizer. Promote the grapes to grow a large number of fibrous roots, in order to strengthen the tree momentum, conducive to overwintering.