What's the difference between Jufeng grape and summer black grape? How to manage planting?

With the improvement of people's living standards, there are many kinds of fruits on the market to meet their needs. Jufeng grape and summer black grape are the grape varieties that we often can't tell apart. So what's the difference between Jufeng grape and summer black grape? How should it be planted and managed? Let's take a look.

The summer black grape is produced in Japan and is the descendant of Jufeng. Sweet and delicious, slightly sour, the skin clings to the pulp, but does not spit out the skin. It is one of the most delicious grape varieties in the Chinese market.

Jufeng grape is a medium-ripe, tetraploid variety, European and American hybrid, originally from Japan. It was introduced into China in 1959 and popularized all over the country. It has become the main variety welcomed by fruit growers.

What is the difference between Xiahei grape and Jufeng grape?

The main results are as follows: 1. Jufeng grape is tetraploid and there will be seeds under normal circumstances, while Xiahei grape is triploid and can not develop seeds under normal circumstances. So the biggest difference between Jufeng grape and summer black grape is that Jufeng grape has seeds, while summer black grape has no seeds. If you eat summer black grapes with seeds, you may have eaten fake summer black grapes.

2. The peel of Jufeng grape can be easily peeled off and the integrity can be maintained, while the pericarp of summer black grape is not easy.

3. The Xiahei grape is characterized by early ripening, which is earlier than other grapes maturing in August, including the Jufeng grape.

4. Xiahei grapes mature earlier than other grapes, so the price is generally higher than other grapes.

Which is more expensive, Xiahei grape or Jufeng grape?

Summer black grapes are characterized by early ripening, seedless, high sugar and low acid, rich aroma, crisp meat, medium hardness, and ripening earlier than other August ripening grapes (including Jufeng grapes). So relatively speaking, summer black grapes are expensive.

III. Planting and management techniques of Xiahei grape

Xia Heisheng grows strongly, the flower bud differentiation is very good, and the full twigs can also produce flower ears. The leaf is erect, the leaf color is dark green, the photosynthetic efficiency is high, the cultivation management is easy, and the cultivation effect is better. It can be propagated by cutting or grafting.

The management frame of young trees adopts "high, wide and vertical T-frame". In addition, summer black is also suitable for scaffolding cultivation.

Dig ditch to fertilize, dig ditch to fertilize before planting, plant according to 1m plant distance, pour through root water and cover with plastic film after planting.

Wipe the buds and fix the shoots, wipe off the double buds, multiple buds and too weak buds after budding; after forming new shoots, tie the wire to both sides and fix the shoots according to 15~20cm spacing.

Thinning spikes to determine yield, after budding to the early stage of flowering, thinning large spikes and weak spikelets.

The fruit setting rate of summer black is very high, so the accessory ear and several branches under it should be removed one week before flowering, and the ear tip should be gently pinched or not pinched, so as to keep the conical ear. The fruit is thinned after the flower and fruit are stable.

Girdling, when dipping the swelling agent for the first time, the girdling is carried out on the trunk branch with a width of 2~3mm, reaching to the xylem, and then binding the wound with adhesive tape, which can promote the enlargement of the fruit. Peeling around the berries at the beginning of coloring can ripen early.

Topdressing inflatable fertilizer generally applied fully mature chicken manure or cake fertilizer in time after flowering, applying 200kg per mu, combined with ternary compound fertilizer 30kg and potassium sulfate 10kg, applied twice.

Topdressing coloring fertilizer and applying potassium sulfate 10~15kg per mu when the berries changed color. Combined with pesticide spraying, add 0.3% potassium dihydrogen phosphate or 0.6% Baolifeng 2 as foliar fertilizer.

To control the growth of new shoots, after fruit bagging, especially in the coloring period, the growth of new shoots should be strictly controlled, which is the key to summer black management. Otherwise, it will lead to slow coloring and delay of maturity. The growth of new shoots can be inhibited by coring or foliar spraying, but the most important thing is to control the amount of nitrogen fertilizer and increase the proportion of phosphorus and potassium fertilizer. After planting for several years, it can be thinned, expand the crown and keep the growth balance.

Base fertilizer is applied in autumn, and after fruit harvest, at the end of August and the beginning of September, rotten organic fertilizer (such as pig manure) 4000~5000kg, superphosphate 50kg can be applied per mu combined with deep ploughing to make high ridges.

IV. Planting and management techniques of Jufeng grape

1. Timely sprouting and reasonable pruning

In the planting techniques of Jufeng grape, after sprouting in spring, double buds and small buds should be removed as early as possible to retain strong buds. It is necessary to pick the heart of the main shoot 2 or 3 times before flowering, erase the secondary shoot, transport more nutrients to the part of the floral organ, and properly remove part of the inflorescence, and pinch off the 1max, 4pm and 5x5 at the end of the inflorescence 3 or 5 days before flowering, so that nutrients can be concentrated to supply the remaining fruit. In winter, medium-long shoots should be pruned, leaving about 10-15 new shoots per square meter, which should be staggered up and down to ensure that the growth of grapes per panicle can reach 15-25 leaves, and the yield per mu should be controlled within 2500 kg. This can make the ears tight, the grains neat, mature and consistent, and improve the flavor and color of the berries.

2. Strengthen the management of fertilizer and water to prevent premature senescence of trees.

In the cultivation technology of Jufeng grape, the growth potential of Jufeng grape is strong, and the requirement of fertilizer and water condition is high. But irrigation should be moderate, especially stop watering 15-20 days before picking. It is necessary to control the amount of nitrogen fertilizer and increase the application of phosphorus and potassium fertilizer. At the beginning of a large number of fruit-bearing vineyards, we should pay attention to the application of fertilizer, keep the trees strong and prolong the full fruit period.

Watering: sprouting water once after the grapes are unearthed in spring. If the soil is not too dry before flowering, try not to water it. After Xiehua, the fruit enters the period of rapid expansion, which needs the most water and can be watered every 10 days. Wait for the fruit to start coloring and stop watering to increase the soluble solids content of the fruit. Before overwintering and burying the soil, pour a flood to make the grapes survive the winter safely.

3. Measures to improve the fruit setting rate of Jufeng grape.

The flower and fruit drop of Jufeng grape is a common problem in production. The main reasons are dysplasia of floral organs, inability to pollinate and fertilize normally, adverse climatic conditions during flowering, and malnutrition in trees. The following technical measures should be taken in production to improve the fruit setting rate of Jufeng grape.