Sapphire grows well and vigorously, and the whole flower bud moves forward, so it is suitable to adopt ultra-long tip pruning and small dragon stem technology. The ear is large, easy to color and mature, and easy to obtain high yield.
In northern Shandong, it usually germinates in early April, blooms in late May and blooms at the end of May. In mid-June, the young fruit expanded for the first time, and in mid-August, the fruit began to color and mature until late August. After ripening, it does not drop seeds or rot shoots, and it can be hung on trees for more than 1 month, which is resistant to storage and transportation.
This variety is easy to cultivate, and the fruit will not be squeezed, broken and rotten, and the fruits and vegetables are very labor-saving. This variety of grape fruit brush is tough, and it is not easy to lose seeds after maturity. Generally, it will form a large spike of 1000g, which is naturally seedless, and the fruit can expand to about 10g without hormones.
Fruit grains are resistant to anthracnose, black pox, white rot and powdery mildew, but leaves are not resistant to downy mildew, so it is suitable for planting in shed or shelter from rain. Using Xiaolong dry technology, the yield is doubled.
Management key:
(1) Fertilization and watering: Five days before the grape blooms, boron fertilizer should be sprayed to promote the flower and keep the fruit, control the wild growth of cuttings and improve the fruit setting rate. In addition, the supply of fertilizer and water should be properly controlled.
(2) Picking inflorescence: Before flowering, pick the inflorescence on the weak branch and leave one inflorescence on the medium-growing branch.
(3) tidbits shaping: remove the shoulder of inflorescence, and remove the top of inflorescence 1/5 3-5 days before flowering.