Fruit and vegetable vegetables grown in early spring are mostly grafted and nursed in greenhouses in winter. By grafting and raising seedlings, the disease resistance of the plant itself can be improved, and the yield can be increased. This is a commonly used seedling raising method in the production of protected vegetables in recent years. So what technical points should be mastered in the process of vegetable grafting and nursery? Specific should pay attention to the following four points: First, choose the right rootstock Different rootstocks have great differences in drought tolerance, cold resistance, disease resistance, etc., and the corresponding rootstocks can be selected according to different cultivation purposes and methods. Such as cucumber grafted seedlings in the winter, you can choose low-temperature, good stretching Yunnan black black pumpkin. Second, choose the appropriate method The most basic grafting methods for fruit vegetables are plugging, splicing, and grafting. Plugging and docking are performed before and after the seedlings are broken, and are mainly applied to melon vegetables. Among them, the scion is small and the hypocotyl is finely inserted. The scion seedling, the thickness of the hypocotyl and the rootstock are similar to each Other, such as cucumber and pumpkin grafting. The splicing is carried out when the rootstock is very large, even when it is mature, and it is mainly used for the raising of eggplant and other vegetables. In the production, the grafting method should be selected flexibly according to the degree of mastery they possess, the type of vegetables, the grafting period, the ease of management after grafting, the operation conditions at the time of colonization, and the type of rootstock. Third, determine the sowing time The timing of rootstock and scion sowing depends on both the growth characteristics and the grafting method to be used. When cucumber and black-skinned squash are grafted by grafting, black-skinned squash should be planted 5 to 7 days earlier than cucumber. When grafting is used, cucumbers should be sown 5 to 6 days earlier than black-skinned squash. IV. Management after grafting The grafted bed needs to maintain the relative humidity of the air at more than 90%, so the seedbed should be poured into the bottom water and then covered with a small plastic shed. To prevent overheating, shading should be done for 3 to 7 days. When the young leaves of the seedlings are no longer wilting or new leaves have emerged, the seedbed can be properly ventilated, cooled, and gradually increased in light. About 8 days after grafting, the shelter can be completely removed and it can enter normal management.
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