Grafting cultivation of cucumbers in winter can improve the plant's disease resistance and the ability to resist low temperature and chilling damage. It is one of the key measures to obtain high yield and high efficiency of cucumbers. Therefore, the quality of grafted seedlings has a very important impact on the growth of cucumber. In order to improve the survival rate of grafted cucumber seedlings, the following measures should be emphasized in seedbed management.  1. After controlling the temperature and humidity, cucumber seedlings should be planted in a seedbed immediately after grafting, and a small arch shed should be buckled immediately to seal the surroundings tightly to facilitate heat preservation and make the grafting wound heal as soon as possible. Within 3 days after grafting, in the small arch shed The temperature should be kept at 25℃～30℃ during the day and around 18℃ at night, and the relative humidity should be kept at 85%～95%. After 3 days, gradually reduce the temperature and humidity, keep the temperature at 22℃～25℃ during the day and keep it at 12℃ at night. ℃～15℃, the relative humidity drops to 70%～80%.  2. Pay attention to shade. After grafting, use straw curtains to shade the seedlings in time to avoid direct sunlight to the seedlings and cause scion wilting. Generally 2 to 3 days after grafting, the grass curtain can be opened in the dry morning and evening to receive astigmatism. Cover the shade when the sun is strong around noon, then gradually shorten the shade time and increase the light time to adapt to the natural light. Generally, you can see the light all day without shading after 6 days.  3. After 3 days of proper ventilation, start small ventilation, and gradually increase ventilation from small to large, and the ventilation time should be gradually extended as the number of grafting days increases. The small arch can be removed 7 days after grafting and transferred to normal management. At this time, 75% chlorothalonil 500 times solution should be sprayed once to prevent the invasion of pathogens. In the future, pay attention to frequently observe the seedling situation, if there is wilting. Shade and spray water in time.  4. Timely sprout rootstock pumpkin seedlings are easy to sprout new lateral buds at the growth point, competing with the scion for water and nutrients, affecting the normal growth and development of the scion. Therefore, it is necessary to check continuously and wipe out in time after discovery to reduce nutrient consumption and promote the normal growth of scion.  5. Cucumber grafted seedlings with timely root cutting and grafting method, 10-12 days after grafting, when the first true leaf of cucumber unfolds, cut the cucumber hypocotyl from 0.5 cm below the grafted wound with a blade, and pull it out at any time Take out the cucumber stubble. When cutting the roots, use grass curtains to shade and avoid strong light. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone
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How to improve the survival rate of grafted cucumber seedlings in greenhouse
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