Recently, a reader from Shaanxi's southern Fujian Province called the newspaper and said that there were not many flowers after the budding of the grapes in their own vineyard. I do not know what the cause was. In this connection, the reporter interviewed Zhang Zongqin, an associate professor at Northwest Forestry University. Zhang Zongqin said that there are many reasons for this, mainly related to flower bud differentiation, flower bud development, pruning, fertilizing and watering of vines. He told reporters that the flower bud differentiation of grape winter buds generally starts from the flowering phase of the main shoot, and the grape flowering period is also the first critical period of grape flower bud differentiation. After the continuous development of summer, autumn and winter, the second year after the spring budding, it enters the second. The critical period of differentiation and development gradually developed. Therefore, cultivation and management throughout the year are important.
He reminded fruit growers that, in actual production, in order to promote the differentiation and development of grape flower buds, comprehensive technical measures can be taken based on the conditions of flower bud differentiation, combining the actual grape production and the biological characteristics of the grapes. In addition to regulating environmental conditions, it is more important to adjust the tree vigor and regulate the balance between vegetative and reproductive growth. During this period we can start from the following seven points:
1, when the winter cut choose to leave buds full, shorter branches between the internodes, using the middle, long tip pruning, appropriate to leave more results of the mother branch, to be buds and then sparsely empty branches.
2, using cultivation mode to ease growth potential, such as inclined scaffolding, T-frame or horizontal scaffolding. Keeping the amount of branches should be sparse and keep the air and light transparent.
3. Properly tie up the new shoots so that the new shoots can hang freely at the appropriate level or level, and the auxiliary shoots can be wiped off to improve the differentiation ability of the flower buds in the first to third quarters of the base.
4. Bind new shoots, pick up hearts in time, suppress new shooters, promote flower bud differentiation at the base, increase their differentiation level, and create more flower spikes.
5, strictly control the amount of nitrogen fertilizer in the late growth period, increase the proportion of phosphorus, potassium fertilizer, re-applied organic fertilizer after fruit picking, and promote early maturation of shoots.
6. After the fruit is harvested, protect the leaves, increase the photosynthesis of the leaves, and promote the accumulation of nutrients.
7, prevent the occurrence of pests and diseases in a timely manner to ensure the healthy growth of the tree.
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