Seeing that the grapes are ripe to be turned into banknotes, but in the event of drought and drought, many grapes will crack fruit, which can easily cause economic losses for farmers. What needs to be done in order to prevent this? Sit down and explain and hope to help you.
When selecting the grape varieties for the park, try to select the excellent grape varieties that are not easily cracked.
Rational and timely irrigation, effectively prevent cracking. Especially important are several times: In order to prevent water shortage 10 days before flowering, it is sufficient to fill 1 time, and watering should be prohibited within 10-15 days after flowering. From then on until the fruit is ripe, the grapes need the most amount of water. The water should be given once every 10 days. Each water must be added with fertilizer, and then the compound fertilizer should be used first. After ripening, the water should be given every 15 days before picking. Each water should be added. Phosphorus and potassium fertilizers. At the same time, the application of potassium dihydrogen phosphate and foliar fertilizer containing trace elements in the foliage is only reasonable watering without cracking fruit.
Prepare drainage facilities, fix drainage ditch, and drain water in time when there is heavy rainfall.
Other references: (1) In the spring, it is best to affix the mulch in the grape ditch. This will not only prevent the water from evaporating, but also prevent it from absorbing too much water when it rains, and at the same time it will keep the roots of heat preservation. (2) Experience has proved that calcium deficiency can easily lead to grape cracking. Therefore, it is very important for thin skin varieties to supplement calcium. It is possible to supplement the “calcium-rich beauty†after fruiting, or directly apply 600-1000 times more efficient Merrill Lynch calcium to fruits. -2 times the effect is obvious. (3) Although some varieties are also European and American hybrids, the skin is not too thin, but because the spikes are too tight and the fruit is inflated when the rain is large, at this time, "gibberellin" or "920" should be used 8-10 days before flowering. "1 g of water 8-10 kg, or the United States" Qibao "1 package of water spray 20-30 kg ear, so that the ear will grow longer, from the tight become loose, the fruit has a growth space can not be squeezed http: //
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