How to increase the seedling emergence rate of grafted seedlings
1. Rootstock cultivation (1) Germination. Rootstock seeds should be harvested from trees that have strong growth potential and are free from pests and diseases. Since the seeds of wolfberry easily lose their germination power, they should be washed, dried, and germinated. Pregermination is usually mixed with river sand and sawdust, a layer of mixture, a layer of seeds, and finally covered with a layer of film, which can be heat preservation and moisturizing to ensure early seed germination. (2) Site preparation. Seedlings and cultivars are afraid of the sun, and the seedbed should be built on drainage and irrigation facilities. The terrain is flat and the soil is fertile and semi-humid. About half a month before sowing, deep sowing, applied per acre about 1,000 kilograms of decomposed manure, 100 kilograms of phosphate fertilizer, 30 kilograms of urea, and 1- to 1.5-meter-wide width, 10- to 20-meter-long width, and 10 to 20 meters high. - 20cm, 50cm wide aisle to finish the bandits. When the seeds germinate 0.5 cm, they can be sowed, covered with a layer of 1-2-3 cm thick soil fertilizer, shade moisturizing. (3) Seedling management. After sowing, the seedbed should be kept moist, if water should be drained in time, avoid excessive humidity, and prevent bad seeds. Seedlings unearthed after 40 days can be combined with irrigation water application of thin decomposing human excrement, thin fertilizer before the application, applied every 15 - 30 days once, can be applied in the rainy season compound fertilizer, the amount of fertilizer gradually increased. In addition, weeds should also be removed in a timely manner. When the seedlings are 10–15 cm tall, they should be taken 1- or 2 times, while diseased and weak seedlings should be removed, and strong seedlings should be kept. The spacing is 10–15 cm. Seedlings are prone to leaf spot and blight, and 70% thiophanate-methyl 800 times. The pests such as yellow caterpillars, aphids, and moths can be controlled by 20% cypermethrin 2000 times solution and 2.5% kungfu 5000 times solution. 2. Grafting method (1) Grafting time. Grafting is divided into spring and autumn. In the Chaoshan region, autumn grafting is preferred (before and after the National Day), due to suitable climate, the rain does not move, and the grafting survival rate is high. (2) Scion processing. Peripheral branches of adult trees were harvested with full shoots and full-grown primary and secondary branch shoots for scion. The scion can be harvested and used or cut and hidden in wet sand with a wax seal. The scion is best cut ahead of time. After cutting, the leaves are removed the next day. The petioles are kept and the leaves lose their moisture. Be careful when cutting the petioles to protect the eyes from damage. The petioles left behind are regurgitated and slowly yellow. When the petioles are removed, they will naturally fall off. If the petioles are removed, they will not only fail to protect but will damage the buds. However, petiole can not stay too long, otherwise inconvenient binding, affecting the survival rate of grafting. Scions can be treated with naphthaleneacetic acid 50 ml/l to increase graft survival. The velvet hair is too dense and has strong adhesion. It is easy to stain the grafting surface during the grafting process. Especially in the spring, the rainwater is relatively large, and it is easy to absorb moisture and affect the survival rate. It is best to wipe off part of the hair with a towel before grafting. (3) Rootstock processing. 1 - 2 days before grafting will be left 15 - 20 cm to cut off the rootstock, retain 3- 5 pieces of compound leaves, or keep pulling the water branch, can reduce rootstock moisture, increase rootstock nutrient concentration and healing hormone concentration, reduce binding After the film moisture, improve the survival rate. If the rootstock is too short, it is inconvenient to graft, affecting the grafting rate and survival rate. (4) Grafting. Choose sunny weather. The scion has long flats on the flatter side. It first uses a knife with a knife at a 45-degree angle on the back of the scion, and then flips and cuts a knife. It is 1.5--2 cm long and is just cut to the xylem. Each scion was left with 1–2 shoots and cut at 0.3 cm above the shoot. Select the smoother side of the rootstock, cut a small piece obliquely with a knife, and then cut down between the phloem and the xylem to a length similar to that of the scion long-cut noodles to slightly cut off the part of the xylem. Finally, the scion long noodles and the rootstock cut-off layers were aligned and mixed with red mud and dichlorvos and coated on the film to increase the survival rate. 3. After the management. About 25-30 days after grafting, check the survival situation. If it is found that the buds are restrained by the binding, the field knife carefully breaks the film and helps the buds to germinate. When scion buds grow to 4--10 years. Grafting site: 1.2 meters short or short cut. The results showed that the short-lived trees of 5 years old or more were rooted in longan, and the high-yielding varieties were best paired with grass. The other varieties showed poor affinity, and the grass paving could be connected to any test stock. Blessing, Taixing can do all the test varieties of the rootstock. Trees that have been grafted for more than five years without direct grafting have lower grafting affinities than grafted grafts. Without short cuts and rootstocks being seeded, it is best to plant the seedlings high, otherwise it may cause serious incompatibility. Trees above 5 years of age are connected after a short cut, and then they can flower in the first year. As the tree grows, the yield increases year by year, resulting in quick results and significant benefits. Those who are over 5 years of age and who have not received direct but high direct access will be able to bear fruit in the first year of the year, but after that, the output will increase slowly and will not even increase. Older inferior varieties, preferably grafted after short cuts, can both change good breeds, and can also update the tree to extend the life of the result. Mouth Pieces,Disposable Mouth Pieces,Medical Mouth Pieces,Disposable Cardboard Mouthpieces Hengshui Qifei Paper Products Co. LTD , https://www.hengshuiqifei.com