Balanced supply of moisture To prevent cracking caused by sudden increase in soil moisture, it is necessary to timely irrigation when the soil is dry, and to drain water in time after rain, to reduce the difference in soil dryness and humidity in different periods, and to ensure balanced water supply at all stages of fruit growth.
Reasonably adjust the load to keep the ratio of leaf to fruit 15-20:1; the robust branch maintains 2 ear fruit, the mean tree branch stays 1 ear, and the weak growing branch does not leave the ear. Timely eradication or shearing of the vice panicles, pods tip, so that the growth of the ear size is moderate.
Rational Calcium Supplementation and Water Supply Spraying 0.2% calcium chloride or 5000 times calcium hydroxide and 0.2% amino acid calcium before berry harvesting can effectively control cracking.
Timely use of conditioners Both the morning fruit and the seedless cultivation of grape fruits can be achieved through the use of plant growth regulators, but the use of such regulators often causes disruption and enlargement of fruit cells, resulting in fruit cracking. Can use ethephon, abscisic acid ripening agent, the appropriate concentration of ethephon is 500 mg / kg, abscisic acid is 100 mg / kg, must be used in the fruit 5% to 10% coloring.
Timely prevention and control of pests and diseases, pest forecast, capture the key to prevention and control, timely spraying. Rainy days, high temperature and humidity, and the most susceptible, should be observed once a day in the vineyard. See the disease first time, that is, symptomatic spraying. Grape disease can be sprayed to control 50% carbendazim WP 800 times, 800 times M-45 and thiophanate-methyl 1000 times; control of spider mites can be sneezing dead 2500 times; control of worms can be Spray puppet 3000 times liquid and so on.
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