Grape fruit enlargement management points
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February 19 04:06:12, 2023
1, 1, nutrient supply is generally applied in the early stage of fruit coloring 1 times, mainly phosphorus and potassium fertilizers. Potassium sulfate three-element compound fertilizer can be used for soil application, and it can also be sprayed together with pest control to increase the nutrition of leaves and fruits through the method of dressing fertilizer outside the roots. 0.5-1% potassium dihydrogen phosphate solution can be used, and even spray 2 can be used. -3 times. In order to improve the storability of grapes berry, calcium calcinate fertilizer can be sprayed twice a day before harvesting, such as Cui Kang Caobao 1000-1200 times, which can significantly increase the calcium content of grape berry, thus Improving the quality and storage of grapes also has a certain effect on preventing cracking. 2. After the water is fertilized and controlled, it should be filled with small water. In case of heavy rain, it should not be filled, and it should be drained in time. In order to guarantee the quality of grapes, it is required to strictly control the irrigation within one month before harvest to prevent the quality from decreasing. Before the advent of heavy rain, special attention should be paid to the prevention of flooding. Second, dendrite management on the new shoots, leaving enough leaves to pick up after 12-15 leaves. If the tips are taken before flowering, sub shoots have already occurred, then the top tips of the new shoots will be left 1-2, leaving 3-5 leaves topping and leaving the rest clear. The tendrils of the new shoots are all removed from the roots. The new shoots are tied to the wire in a timely manner to allow it to stand upright and the distance between the new shoots should be even. The sick, dry old vines were all cut off and cleared outside the garden. Third, ear management According to the growth of new shoots ear, the general law is: strong two in a weak do not stay. If there are 3 ears in a new shoot, it must be cleared 1-2. If the ear is not tipped before flowering, it can be done at this time, and the spike tip is 1/5-1/4. It is necessary to eliminate the sickness, disability, and deformity. If grapes are planned to be bagged, this period is the best period and it must be done quickly. IV. Pest control At this time, the grape shoots are in adolescence. Most regions in China are not prone to multiple pests. In case of rainy weather in the south, gray mold and the like will occur. This period is mainly prevention of disease. Can be 1:0.7:200 times the main Bordeaux mixture, during which interspersed or sprayed carbendazim, or chlorothalonil, or thiophanate-methyl, when the disease occurs, the symptomatic spraying. V. Soil Management Each time watering, keep the soil loose and protect the grasshoppers, and remove weeds in the field, paying special attention to removing high-grass weeds.