High-quality seedlings are the basis for the production of big cherries. The quality of seedlings not only has a direct impact on the speed of tree growth, but also results sooner or later and the level of yield. It also has great influence on the adaptability and resistance of trees. Therefore, we must pay attention to the breeding of high-quality, robust seedlings in production. The technical specifications for seedling breeding are described below. First, the choice of suitable rootstock. There are many types of large cherry rootstocks, such as Laiyang dwarf cherries and large-leaved grass cherries (also known as Daqingye) in Chinese cherries, Maochao, Mahali, and Cotte. Practice has proved that the large-leaved cherry has strong adaptability to soil, and it is most suitable for growth in sandy loam or gravel loam; it has good resistance to root cancer; it has strong grafting affinity with big cherry varieties, deep root distribution, thick roots, The grafted cherries grow robustly, have good solidity, are not easy to lodging, and are prone to high yields. Therefore, large-leaved grass cherries should be selected as the rootstock for cultivating large cherries. Second, the nursery to select and organize 1, suitable nursery breeding large varieties of cherry nurseries, the best choice for leeward sunny, fertile soil, not heavy, do not accumulate, well-drained, but also the conditions of irrigated neutral loam Or sandy loam. 2, nursery nursery land finishing, to be in winter before 5000-6000 g / square meter spread base fertilizer, deep plan after application. Before the seedlings are planted in Hunchun, they should be ploughed again to make it full and smooth. Third, the rootstock breeding method 1, the seedlings of large-leaf grassy cherry cherries easy to produce a large number of root around the rooted seedlings, production often through the propagation of the ramets to use it as a large cherry rootstock. The method is: in spring and summer, the root seedlings growing around the roots will be cultivated to a depth of about 30 centimeters of soil to make them rooted. After the fall, or before the budding of the late spring, the sprouts of the roots will be separated from the plants to concentrate the colonization or Planted in a nursery to grow large grafted cherries. 2, the method of seedling production in the production of large cherry rootstock seedlings, mainly upright and horizontal layering. (1) Upright strips: Large cherry rootstocks are planted in the nursery in the fall or early spring. When planting, first dig a groove about 30 centimeters deep at a row spacing of 1-1.5 meters, and then plant the rootstock seedlings into the trenches at a spacing of 50-60 centimeters. The root neck is lower than the ground. Leave 5-6 buds cut before the sprouts sprout. When the buds grow to about 20 cm in length, the first earthing will be done, and the thickness will be about 10 cm. When the new shoots grow to 40 cm, they will be 10 cm deeper. After each soil, top dressing and irrigation should be performed. In the future, the comprehensive management will be strengthened, and the soil will be suitably cultivated according to the situation. After falling leaves in autumn, the ramets can be sown. (2) Horizontal layering, also called buried layering, is one of the methods used for the propagation of large cherry rootstocks. In early spring, 60-70 centimeters of line spacing, 20 centimeters deep and 20 centimeters wide, and then an excellent 1 year old rootstock seedling planted along the ditch in the ditch. The angle between the rootstock and the ground is about 300, and the plant spacing is roughly Equal to the height of the seedlings, after planting practical and pouring enough water. After the seedlings survived, the lateral buds germinated and the new shoots were pumped. When the new shoots reach a length of about 10 cm, the rootstocks are pressed into the bottom of the trenches, fixed with small twigs, and the seedlings are covered with about 2 cm soil, and then watered. After growing with the new shoots, cover the soil in stages until it is flush with the ground. In order to promote the growth of seedlings, urea was applied in combination with 20 kg/mu of urea in the middle and early June. Seedlings grow well and can be grafted in the nursery from late June to early July. The poor growth can be grafted in September. In the autumn, the seedlings were cut into individual seedlings. Fourth, grafting seedlings 1, seedling grafting more use of "T"-shaped buds and budding plate connection method. (1) The "T"-shaped bud is connected to the large cherry production area in Yantai. The suitable time for "T"-shaped bud connection is divided into the early and late stages. The first period is 15-20 days in the first half of June; the latter period is from mid-July to the end of August, and it is sometimes extended to mid-September for a duration of about 50 days. Grafting too early (May), young scion, thin cortex, budding development is not substantial. Grafting too late (after mid-September), the shoots had stopped growing and the budding was not easy to peel off. In the middle and early July, it was a season of “subdued rainâ€. Afterwards, it was easy to flow and the interface was difficult to heal. Grasping budding time is one of the keys to improving the survival rate. Grafting at different times requires a different choice of scion and budding. In the early period (mid-to-mid-June), 5-6 full shoots in the middle of robust shoots should be used as shoots. In the late stage (July-August), when the buds are harvested, they can be used as buds in addition to basal shoots and autumn shoots. In September, budding shoots will be taken from the leg of an imperial dragonfly in the canopy. When grafting, cross a knife 0.5 cm above the bud, and then from the 1.5 cm below the bud, cut into the upper part of the xylem from the shallow deep into the upper incision, gently upwards a curl, and then hand to hold buds one Remove the 2 cm-sized shield buds on the side. At the base of the rootstock, about 10 centimeters, the smooth surface of the shade was selected, and a "T" shaped blade was cut with a bud knife to reach the xylem. Then gently peel the left and right skin layers from the top to the bottom with a knife edge, and then insert the cut buds into the cuts of the rootstocks so that the upper ends of the sprouts are aligned with the transverse incisions of the rootstocks, and then tightly tied with the plastic strips. (2) The method of sprouting the plate can be used throughout the year. Grafting stocks should have a thickness of 0.7 cm or more. Scions should collect one-year-old shoots and full shoots should be used for budding. When grafting, select a smooth part about 10 cm from the base of the rootstock, and cut the long oval-shaped noodles about 2.5cm in depth and about 2mm in depth in the vertical direction. When the buds were cut, they were placed under 1.5 cm below the shoots. The buds were gently cut from the scions, and the long oval-shaped buds 2.5 cm thick and about 2 mm thick were cut. Then, the buds are tightly affixed to the noodles of the rootstock, and tightly tied with plastic film. Fifth, then management 1, timely unbundling. About half a month after grafting, it was checked whether budding was alive or not. If buds were fresh and enlarged, they showed that they had survived. For those who do not survive, they should be patched in a timely manner. The survival buds will generally be unwound for about 25 days so as not to affect budding and germination. 2, cut anvil in addition to Meng. After grafting to survive or before sprouting in the spring, cut the anvil 1 cm above the shoot. When the anther buds germinate, the buds on the rootstocks must be promptly removed to promote budding. After that, we must continue to eliminate germination 3-4 times. When the new shoot grows to more than 20 cm, a pillar shall be inserted next to the seedlings, and the new shoots shall be tied and fixed on the pillar with hemp rope or plastic film tape to prevent the wind from breaking the new shoot. 3, fertilizer and water management. In order to promote the growth of seedlings, it is necessary to strengthen fertilizer and water management. According to drought and seedling growth, timely watering and top dressing. In the early stage, nitrogen fertilizer was dominant, and phosphorus and potassium fertilizers were the main components in the later period. After each top dressing, water should be applied, and weeding and weeding are often performed. Two to three extra-root top dressings are also available throughout the growing season. In order to improve the ability of the seedlings to resist cold during the winter, and to prevent draining, proper water control and fertilizer control should be carried out in the later period so as to prevent the seedlings from being greedy for greenery and the organization is not fulfilled. 4, pest control. During the growth of seedlings, pest prevention and control should be done well. After germination, we must guard against small gray elephant weevil, which can be captured manually, or we can use 80% crystal trichlorfon to make bait traps. From June to July, 50% of chlorpyrifos EC 1000 times or 2.5% of deltamethrin EC 2500 can be used to control the harm of P. edulis. 7-8 sprays 1-2 times 65% zeocin zinc wettable powder 500 times, or 40% more manganese zinc 600-800 times liquid, or zinc sulfate lime liquid (1 part of zinc sulfate, hydrated lime 4 parts, water 240 Serve and mix thoroughly) to prevent bacterial perforation and prevent early defoliation. Leaf roller moths, moths and
Other pests can be sprayed with 25% diflubenzuron 2,000 times solution or 50% dichlorvos EC 1000-1500 times solution. Six, seedlings out of the nursery. Generally, the seedlings are planted before the soil is frozen after the seedlings are defoliated, and the root system must be kept intact when raising the seedlings. First remove diseased seedlings and grafted non-viable seedlings, and then according to the height and thickness of the seedlings, and to graft and graft uncultured seedlings, and then classify the seedlings according to their height, height, thickness, and root development status. For local gardens, they can be planted directly. For the construction of gardens in Hunchun, you can choose to take a lee place without collecting water. Dig a sham planting ditch with a depth of about 1 meter, put the seedlings in a diagonal position, and then cultivate the soil to a height of 2/3 of the seedlings. The seedlings that are packaged for shipment can be bundled into 1 bundle per 50-100 strains, and the roots are wrapped in wet grass to prevent water loss in the root system. Then attach a label on each bundle of seedlings, indicate the variety, specification and quantity, and then deliver the shipment.
MMP Inhibitor
Our MMP Inhibitor products is good in quality and competitive in price.
We are manufacturer and supplier of MMP Inhibitor products following your specific requirement.
We are looking forward to your E-mail and establishing cooperative relationship with you.
We would provide professional MMP Inhibitor products with good services for you.
MMP Inhibitor
GM6001 Inhibitor, Matrix Metalloprotease Inhibitor, Nobiletin Inhibitor
Taizhou Crene Biotechnology Co., Ltd. , http://www.crenelab.com