1. The first critical period is before the grapes sprout

At this time, the grapes germinate, the new shoots will grow rapidly, the inflorescences will develop, and the roots are also in the vigorous active stage, which is one of the critical periods when the grapes require water. The north is arid in spring, and the grapes are covered by moist soil for a long time. After being unearthed, they are not watered immediately, and they are easily affected by dry wind, resulting in poor germination and even drying out of the branches.

2. 10 days before flowering is a key watering period

During this period, new shoots and inflorescences grew rapidly, and the root system began to produce a large number of new roots. The assimilation was vigorous, the transpiration gradually increased, and more water was required. During the flowering period, it is generally necessary to control water, because watering will lower the ground temperature, and at the same time, the soil moisture is too high, and the new shoots will grow too vigorously, which is not good for grape fertilization and fruit setting. In areas with strong water permeability, such as drought, proper watering during the flowering period can sometimes increase the fruit setting rate.

3. About 10 days after blooming is the third critical period

During this period, the new shoots grow thick rapidly, the base begins to lignify, the leaves rapidly increase, new inflorescence primitives are formed rapidly, a large number of new lateral roots are formed in the root system, and the root system absorbs water in the soil to the most vigorous degree, and the berries The arrival of a growth peak is the critical period of fertilizer and water demand.

4. The coloring of berries is the second peak period of berry growth

At this time, the temperature gradually rises, the berries grow extremely fast, and the sugar begins to accumulate in the berries. The new shoots grow thicker and begin to lignify, and the inflorescence develops rapidly. Supplying suitable fertilizer and water during this period can not only improve the yield and quality of the current year, but also have a good effect on the yield of the next year.

5. The berry ripening period

In general, in areas with better irrigation or water retention, soil moisture is sufficient. If rainfall is insufficient, soil water retention is poor, or fertilization is large, irrigation is required. During the ripening period of berries, the soil moisture is appropriate, the fruit grains are well developed, the yield is high, and the sugar content is also high. If the water content is large, the berries can also mature well, but the sugar content is reduced, the flavor is reduced, the fruit is easy to crack, and it is not resistant to storage. Therefore, doing a good job of water control at this time is particularly important for the later benefits.

6. When the grapes are buried in the soil for cold protection

If the soil is dry, it is inconvenient to bury the soil, so a small amount of water is required before burying the soil. In the arid areas of the north in winter and spring, there is a habit of pouring and sealing frozen water in winter.

Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone

Functional Food Ingredients

Shaanxi Kang New Pharmaceutical co., Ltd. , https://www.bodybuildingoil.com