Shed cultivation method of greenhouse grafting scion
Breeding scion seedlings: Loofah sowing in the seedling tray, can be conventional nursery management. Grafting method The connection method: also known as "tongue connection", "tongue docking", "tongue docking", first sowing loofah for 3-5 days, then sowing pumpkin, selecting the rootstock and scion of similar growth height for grafting. 10-12 days after sowing of the loofah, the first true leaf of the seedling has half-expanded, ie "1 leaf and 1 heart" is suitable for grafting. During the grafting operation, dig out the pumpkin and loofah seedlings from the seedling tray, do not injure the root system, and try to make the root system more soil. First remove the growing point of the pumpkin with a bamboo stick, and then use a knife at 0.5-1 below the growth point. At the centimeter, the embryos were cut diagonally from top to bottom with an incision angle of 30-40, an incision length of 0.5-0.7 cm, and a depth of about half of the thickened embryo stem. The direction of the scion incision is opposite to that of the rootstock. The length of the incision is similar to that of the rootstock. The scion incision is cut upwards from the growth point 1-1.5cm, and the depth is 3/5-2/3 of the thick m stem, and then the scion will be cut. The inserts are inserted into the cuts of the embryonic stems of the rootstock, so that the incisions of the rootstocks are matched together, the grafting sites are fixed with clips, or the plastics are wrapped and then fixed with clips so that the interfaces are tightly combined. After picking the seedlings, the cotyledons of the loofah lie on top of the cotyledons of the pumpkin and are in the shape of a "10". The two grafted seedlings were planted in a nutrient pod, and the two roots were left 1-2 cm. After 10-15 days, the wounds were healed. At this time, the first true leaf of the loofah was stretched and opened at the interface. The scion was cut at 1 cm below, ie "root cut". On the day before the root cut, it is best to pinch the embryo stem under the sponge gourd interface and destroy its vascular bundles. The advantage is that it basically does not need to be seedling after cutting off the roots. Remove the fixture 2-3 days after the root cut. Clip insertion method: Grafting is suitable for 7-8 days after loofah sowing. At this time, the first leaf of the rootstock has large finger belly, and two loofahs of loofah have just been developed. When grafting, firstly remove the growth points and leaves of the rootstock, then use the bamboo sticks that are the same as the thickness of the scion stems, insert 0.3-0.5cm diagonally from the base of one side of the cotyledon to the opposite side, do not insert the cut surface of the bamboo stick, do not Insert the pith. Scion under the cotyledon 0.8-1 cm under the knife, oblique cutting two knives, incision 0.6 cm long, after cutting, immediately pull out the bamboo stick, the scion inserted into the hole, and the scion with the rootstock of the cotyledon was "ten" Glyph. Plug-in method is simple and effective, but it has strict temperature requirements. Grafted seedlings management: grafted good seedlings put people in advance to build a small arch shed, sprinkle some water on the shed floor, cover the shed strict, the first 3 days with newspaper shading, daytime temperature at 251, 15 °C at night, air relative humidity 95%. Scattered light was given on the 4th day, after which the amount of light and illumination time were gradually increased, and ventilation was gradually performed to reduce the temperature. The daytime temperature was maintained at 22-24°C, nighttime at 13-15°C, and the relative humidity of the air was 70%-80%, the 7-8th day. Remove the shed for normal management. Keep the soil moist during the nursery and clear the sprouts at any time. Grafting seedlings can be planted 25-35 days after planting, planting should not be too deep, to prevent the grafted area then fluvo-aquic soil, the roots of sponge gourd produce adventitious roots and disease, lost the significance of grafting. Pumpkin Seeds,Roasted Pumpkin,Raw Pumpkin Seeds,Salted Pumpkin Seeds Wuyuan county dafeng oil food co.,ltd , https://www.dafengfood.com.cn