1 red milk grapes must have a certain intensity of light during normal growth, but the light is too strong, especially when the grapes into the hard core period is more prone to sunburn, then you can take the bag or plant to stay as much as possible to stay in the leaves that can cover the fruit of the grapes. When the sunshine is insufficient, it is easy to cause poor corolla shedding in the flowering period, the fertilization rate is low; the bud differentiation period of poor bud differentiation, unisexual fruit; the growth period of the plant is long, the internode is long. Do not bear fruit or knot unisexual fruit; fruit expansion period disease and poor quality; poor coloring during maturity, sugar level decline.
2 After the soil thawed in early spring, rake the ground in time to preserve moisture. The cuttings are divided into flat bed cuttings, raised bed cuttings and ridge cuttings, flat beds are mainly used in drier areas to facilitate irrigation; raised beds and ridge cuttings are mainly used in areas where the soil is more humid so that they can drain in a timely manner and prevent the beds from being excessively humid. Whether cuttings are taken in flat beds or raised beds, a good seedbed should be made before taking cuttings. The size of the seedbed should be decided according to the shape of the plot, generally 1 meter wide and 8-10 meters long, with cuttings spaced 12-15 centimeters apart and rows spaced 30-40 centimeters apart, and 3-4 rows inserted in each bed. Cuttings, cuttings inserted diagonally into the soil, the ground exposed a bud eye, to make the bud eye in the back of the cuttings above, so that the end of the new shoots straight.
3 base fertilizer is the most important part of the vineyard fertilizer, base fertilizer in the fall, from the grape harvest to the soil before freezing can be carried out. However, production practice shows that the earlier the base fertilizer is applied in autumn, the better. Base fertilizer is usually used rotted organic fertilizer (stable manure, compost, etc.) in the grape harvest immediately after the application, and add some quick-acting fertilizers, such as ammonium nitrate, urea and calcium superphosphate, potassium sulfate and so on. Base fertilizer has a good effect on restoring tree strength, promoting root absorption and bud differentiation. The method of applying base fertilizer has a whole garden withdrawal and furrow application of two kinds, trellis grapes are mostly used withdrawal, and then use shovels or ploughs to turn the fertilizer buried after application.
4 After the emergence of the soil spray cloth 5 degrees of thiosulfuric acid or 100 times Chlorothalonil; young fruit period began (June on) every 15 days or so spraying prevention, until harvest. In the south, to seize the inflorescence separation period (late April to early May), 7 days after the flower shedding, half a month before maturity of the prevention and control work, the main agents are half, equal or doubled type Bordeaux liquid, 75% Chlorothalonil 800 times liquid.