Spring grape management points

The spring is the season when the grape sprouts grow leaves, shoots and elongation, heading and flowering. How to strengthen the grape management in spring and increase the grape yield and quality is a common concern for fruit growers. The following focuses on the main management tasks for the grape season in April and April.

First, in mid-to late February to early March, budding: irrigation water, application of nitrogen fertilizer.

The conditional orchards at this stage should be filled with water in a timely manner to ensure budding and orderliness. At this time, it is the time when the flower buds continue to differentiate and the new shoots begin to thrive. When a large amount of nutrients is needed, the human feces and urine is mixed with 0.2% urea. The amount of fertilizer this time is about 15% of the whole year.

Second, from March to mid-April: wipe buds, shoots, spikes and pest control.

After winter repairs, the winter buds on the mother tree often have 70% to 80% germination, and attention should be paid to leaving them at this time. Too many buds remain, it is easy to waste nutrients, weak tree vigor, is not conducive to fruit setting; However, if too few buds are left, it is easy to cause vigorous growth of branches, which can easily cause serious flowering and fruit drop.

Stubbles: Usually when one bud has germinated on one parent, one bud is left every 15-20 centimeters, leaving 2-5 new shoots per mother branch and the rest wiped off from the base. When the buds are wiped off, the apical buds or weak buds in the two buds are generally wiped out, and only one shoot is left in one bud. Of course, in order to ensure the yield, it is also possible to decide whether to leave the first coil when the new shoot grows to 4-5 leaves, but this wastes more nutrients.

Pin tip binding vines: The preserved shoots leave 5 leaves above the flower spike before flowering, and 8 leaves leave the hearts without flowers. After topping, a large number of axillary shoots will be sprouted, leaving only 1-2 apical shoots at the top and leaves 2 leaves repeatedly topping, and the rest of the auxiliary shoots will be wiped off. At the same time according to the growth of vines tied vines.

Spike processing: In order to ensure the fruit setting rate, one-fifth of the panicle spike is usually removed manually and 0.3% boron plus 0.5% urea is applied during the flowering period. Five days after flowering, artificial fruit thinning was performed on the ear with more results and then bagged.

Cultivated weeding and disease prevention and control: The grape begins to prevent disease when it germinates 3-5 leaves, spraying once every 7-10 days, especially after the rain, it is necessary to strengthen spraying protection, and pay attention to cultivating and weeding. This period is mainly to prevent grape black spot disease, gray mold, rust and so on. For example, black pox can be used Dupont Fuxing 8000 times, gray mold can be used to control 1500 times faster Keling. Here also can be used commonly used drugs, such as carbendazim 800 times, mancozeb 800 times, 800 times and other agents such as zinc control.

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