1. The scion was collected on the parent tree of the elite cultivar, and the one-year-old shoots on the middle and upper part of the periphery of the crown were well-grown, thick green leaves, full shoots, no pests and diseases, and scion. About 10 days before harvesting, the young shoots or spikes on the upper ends of the spikelets are removed to promote full axillary buds. The scion is best used with harvesting. The cuttings should be dried after sunny dew. The scion should be cut immediately to remove the leaves and the young part of the end, leaving only the short petiole to protect the buds. Immediately after cutting, wrap it with plastic film and hang it. Label, indicate variety, date and place, scion wrapped with plastic film in the shade of the room. Membrane breathe about half an hour every day, can be stored for 6 days. If the storage period exceeds 6 days, moist river sand can be used for layered storage and covered with straw. Insulate and protect against cold, and turn it every 3 days to check the dryness of the scion and river sand. To collect long-distance transportation from outside the field, use carton packaging, and moss and moisture should be laid around the wall. Second, the period of grafting and changing is generally from December to March of the following year, with the period of January to February before the spring shoots as the best change period. Third, grafting and other methods 1, cut and then cut connection method is easy to operate, high survival rate, sprouting fast shooter, scion amount of province, is the best grafting alternative grafting method. Saw (shear) anvil: In the alternate tree, choose 1-2 branches distributed 2-3, 15-20 cm from the branches sawing off, the cut should be smooth, slightly inclined, not torn crack. The keratotomy skin is smooth with a grafting knife, slightly inclined and not torn. The keratotomial section of the cortex was smoothed with a grafting knife, and 1-2 branches of the slanting lateral branch with a large branching angle below the grafting part were designated as “pumping branchesâ€. The rest of the branches were sawn from the main branches and the height of the grafting site was approximately 1 from the ground. Meters around. Cut the anvil: Select the bark smooth place, at the junction of the cortex and xylem, lean slightly to the xylem 5-10 degrees, slightly with a xylem longitudinally cut a knife, depth 2-2.5 cm, incision straight, rough diameter of the joint more than 6 cm Two incisions were made on the section opposite the cut surface, and two scions were grafted to facilitate the healing of the cross section. Scion Scion: Hold the scion with your left hand and hold the knife in your right hand. Cut the 2-2.5 cm long noodles slightly at the base of the scion. Cut a 45-degree bevel on the opposite side of the scion. Cut a short 1-1.5 cm long face. In one line, switch to the ear, leave 1-2 bud eyes cut off, scion cut wedge-shaped, 3-4 cm long, with 1-2 full bud eyes, buds should be between the two noodles, long and short two noodles to be flat straight. Cuttings and dressings: The scion and rootstock forming layer must be aligned and closely cling to each other. The cutting depth is appropriate to the micro-extravagence, so as to facilitate the wound healing of the rootstock section. Immediately after the cuttings, bandages are used to wrap them in a thin film band. Twist two times in the upper part of the joint to fix the scion so that the scion and the rootstock cut form a layer. After that, the rootstock section is covered with a film, and the film band is continued to be wrapped around the entire grafting area. , The scion part is wrapped with mulching eyes. 2. The grafting is applicable to the tree which is high in trunk and the stem diameter is 15cm or more in the grafting area. The embedding operation is difficult, the survival rate is lower than that of the cutting, and the scion requirement is coarse and the amount is large. Anvil: The anvil is usually sawed 40-50 centimeters from the ground. The trunk should be left with 1/4 of the anvil and should not be sawn. If the canopy is large, large branches of the canopy should be sawed before the saw anvil to reduce the weight of the canopy and prevent the trunk from tearing or breaking the anvil. Rootstock Saw Groove: Use a saw blade with a wedge-shaped notch of about 1 cm width, 1.2-1.5 cm depth, and 5-6 cm length on the smooth side of the saw section. Use a grafting knife to cut the saw groove to make the groove slightly wider than the groove. Width, slot slightly wider than the slot, 2 cm from the bottom of the groove from the inside out, the sides of the slot to straighten. Open the same slot on the opposite side. Cutting scion: on both sides of the stalk, the sympodial branches, with a slight xylem growth cut 4-5 cm slope, inward side of the lower side of a long cut about 2 cm short slope, deep wood scion of the scion, was wedge-shaped, its The shape and the size of the interface are similar. After the ear is cut into pieces, insert the interface on both sides to form a layer, and tap it slightly to make the anvil snug. Wrapping: The interface gap is blocked with sawdust, the joint is tightly tied with a thin film band, the section is covered with a film and tightened, and the scion part is wrapped with a mulching film.
Crepis Base,Huanyang Alkali,Tamoxifen Nolvadex
Pharmaceutical and Medical Co., Ltd. , http://www.chphmedical.com