Fertilization Technology of Jufeng Grape

Jufeng grape is very popular with many people because it tastes very sweet and its appearance is red and purple. It makes people feel delicious at first glance. Often in its last season, sales were very good. So how do you grow such delicious grapes? The following editor will tell you!

Fertilization Technology of Jufeng Grape

1. Base fertilizer. In the middle of September every year, the ditch is 0.7m deep and 0.5m wide, then the rotten farm manure is applied to 5000kg/ mu, and the compound fertilizer 20kg is added to fill the ditch with irrigation.

2. Topdressing: after the first grape was put on the shelf, 15% compound fertilizer 20kg/ mu of nitrogen, phosphorus and potassium was applied to promote flower bud differentiation and sprouting, and to promote the growth of new shoots. The second time, one week before flowering, the application of compound fertilizer 25kg/ mu promoted the rapid expansion of paddle fruit and made the size of fruit consistent. The third time, at the beginning of fruit coloring, mainly phosphorus and potassium, adding a small amount of instant nitrogen fertilizer, the above three times were urea 20kg/ mu. The fourth application of compound fertilizer 1kg/ mu and potassium sulfate 1kg/ mu when the fruit begins to soften and color, promote the second growth and full coloring of the fruit, increase the sugar content, which is beneficial to storage, and can also be carried out combined with autumn fertilization before the fifth harvest, which is beneficial to increase the nutrition of the tree and improve the overwintering ability of the tree.

3. Foliar fertilizer. Five times a year, starting from the middle of June, once a semimonthly, the first two times of spraying urea and the last three times spraying 350 times of potassium dihydrogen phosphate.

Winter cutting technique of Jufeng grape

1. Protect the cutting bud: cut at 3cm to 4cm above the cutting bud. If the internode is short, it can be cut in the first section of the cutting bud. The cut should be smooth to prevent rupture, so as not to affect the germination of the bud.

2. Leave short branches when thinning large branches: twigs can be removed from the base, short stakes should be left when large branches are thinned, and then cut short stakes in the second year. At the same time, avoid continuous wounds, so as not to affect the smooth flow of the dredging tissue.

3. Avoid mouth-to-mouth injuries: when thinning branches on the main vine, try to avoid mouth-to-mouth injuries.

4. Reasonably determine the length of cutting: the length of cutting must be fully mature, and the branches and vines should be properly grown where there is space, so as to fill the shelf as soon as possible. The varieties with prosperous growth and low seed setting rate of basal buds should be pruned by medium and long shoots, moderate or weak in growth, and medium and short shoots should be used in varieties with high seed setting rate of basal buds.

5. branch group renewal: if single branch renewal is adopted, the winter pruning is to prune the short shoot of the fruiting mother branch, leaving no reserve branch, the upper fruit in the new branch drawn by the fruiting mother branch in the second year, the thinning inflorescence in the lower part as the preparatory branch, and the fruiting branch is removed during winter pruning, and the reserve branch is pruned. If shoot regeneration is used, one fruiting mother branch and one upper part of the reserve branch are still pruned according to the middle and long shoots, and the lower branches are cut short by 2-3 buds.

6. pay attention to perennial vine renewal: for perennial vines that are weak at the end and still have good fruit at the back, retract to the branches that grow strong; for those perennial vines that still have good branches at the apex but are bare behind, press the vines to cultivate new plant fruit; for perennial vines with weak growth potential. If there is still fruiting ability, when there is no sprouting at the base, it can be combined with the method of truncating and vertical binding the mother branch on the old vine to help the weak vine become stronger and balance the tree potential; for perennial old vines, if there is no fruiting ability, it should be removed completely.

Management of budding stage of Jufeng grape

The germination period is no more than 10 days from the grape unearthed on the shelf to the bud germination, which is marked by the fact that the thick soil temperature of 20cm reaches 9 ℃ in mid-late April, the lowest temperature is above 10 ℃, and the germination rate enters the germination stage. Management techniques: timely unearthed on the shelf, do not put on the shelf early, early roots do not begin to move branches and buds are easy to sprout, too late buds germinate in the soil, easy to touch the bud eyes on the shelf, about April 10-15 unearthed. Irrigate in time after being unearthed on the shelf, straighten the branches when they are on the shelf, level the shelf surface, fill them once during irrigation, and the soil water capacity reaches 70%.

Management of Young Fruit stage of Jufeng Grape

1. From the time when the flower falls to the time when the young fruit stops growing. It will take about 30 days. The fertilized embryo undergoes a large number of cell division, the number of cells increases rapidly, and the young fruit grows rapidly, which requires a lot of nitrogen fertilizer and a lot of water.

2. The requirements for the tree phase: the tip of the new shoot grows rapidly. The color of the leaves changed from light red to dark green. The size of the leaf is kept in the palm of the human hand.

3. Cultivation techniques: irrigation with small water frequently. Irrigate a small amount of water every 5 times every 6 days, subject to about 1 inch of ground moisture. Topdressing nitrogen fertilizer. Can be fertilized outside the root, spray foliar fertilizer with 0.1% murine 0.3% urea. Rare fruit. Ensure that the mature fruit is more than 10g, the ear is about 0.5kg, and the ear is long and cylindrical. I will go to the assistant post in the middle of June. There are 8 leaves on a new tip, and the reasonable standard of the shelf surface is that the light transmittance of the shelf surface reaches 30% at noon on a sunny day.

Usually we eat grapes, it turns out that there are so many matters needing attention in fertilization. So every excellent fruit is hard to come by! Growing grapes is a good choice, it can not only make delicious raisins, but also into wine, I believe it will bring you a good profit.