Grafting cultivation of watermelon has many advantages, such as preventing watermelon wilt and promoting growth.
Prevent blight. Fusarium wilt is one of the main diseases that harm watermelon. Once it happens, it is difficult to control, which may lead to reduced production or even no harvest. Practice has proved that grafting can effectively prevent the occurrence of Fusarium wilt, shorten the rotation cycle and make continuous cropping possible.
High and stable yield. Grafting can effectively prevent the occurrence of Fusarium wilt, and rootstock has developed root system and strong ability to absorb water and fertilizer, so grafting can make watermelon obtain high and stable yield. Practice has proved that the yield of watermelon grafting is 20%~80% higher than that of control.
Enhance the cold tolerance of plants and promote the early development of seedlings. Grafting watermelon with gourd and pumpkin can improve the cold tolerance of seedlings to a certain extent and make watermelon grow at lower temperature. Because the root system of rootstock is developed, it can adapt to low temperature, which increases the absorption ability of grafted seedlings in the early growth stage; On the other hand, the cotyledon area of rootstock is large, which increases the assimilation area of grafted seedlings, so grafted seedlings grow smoothly once they survive.
Save fertilizer and water. Compared with self-rooted seedlings with the same growth, grafted seedlings can improve the utilization rate of fertilizer and water, thus saving fertilizer and water.
Preserve breeding materials and expand propagation coefficient. For precious breeding materials, in order to prevent losses caused by accidental factors or pests, some organs can be grafted to preserve species or expand reproduction. In addition, grafting technology can also be used to overcome the difficulty of inducing rooting of asexual seedlings obtained by biotechnology and improve the vitality of asexual seedlings.