First, affinity
Affinity refers to the ability of rootstocks and scions to heal and survive and grow normally after grafting. The rootstock and scion are not compatible or have low affinity. The main manifestations are: poor wound healing, poor healing after healing or poor healing, and low survival rate; some can heal, but the graft does not germinate, the healing is poor, and the growth is late. Easy to break. The growth results were not normal. After grafting, the leaves were yellowed, the leaves were small and clustered, the growth potential was weak, and even died. In some cases, a large number of flower buds were formed in the early stage, and the fruit development was abnormal. The phenomenon of "big and small feet", the growth of the rootstock and the scion interface is not coordinated, some "big feet", some "small feet", and some are "rings". In the later period, it was not friendly, and it grew well in the early stage, but it was seriously incompatible in the later stage.
Second, the quality of the rootstock
Rootstocks and scions are developed and enriched. When storing nutrients, it is easy to survive after grafting. Therefore, you should choose to organize the branches that are full and strong and full of buds. The semi-lignification of grafted rootstocks and the survival rate of scion lignification were the highest; the survival rate of semi-lignification of rootstocks and semi-lignification of scion was also high; and the survival rate of lignification and scion lignification of rootstocks was lower; if lignification of rootstocks, lignification of scion The survival rate is lower. In the spring grafting, it is advisable to select the rootstock for lignification and the wood of the scion for grafting.
Third, the temperature
When the temperature is around 15 °C, the callus grows slowly; at 15 °C ~ 20 °C, the callus grows faster; at 20 °C ~ 30 °C, the callus grows faster. In the spring bud, try to graft the scion to the sunny side of the seedling to increase the temperature at the interface. When the spring branches, the large facets should also face the sun to increase the temperature at the interface.
Fourth, humidity
Maintain a certain humidity at the interface (relative humidity above 95%, but not water), which is conducive to callus production. Therefore, the interface must be in a humid environment. After grafting, the interface must be sealed and not breathable to prevent evaporation of water. Inspection standard: On the second day after grafting, if there is no water droplets in the bound film, the binding is not strict and needs to be re-grafted.
Five, lighting
After grafting, the callus grows faster under darker conditions. Therefore, when grafting, try to connect the scion to the shade of the seedling.
Sixth, operational technical requirements
Grafting operation has a skilled grafting technique. Under the correct grafting technology operating conditions, the faster the grafting speed, the higher the survival rate. Regardless of the rootstock or the scion, the cut and the noodles must be smooth, the joints should be tight, and the layers formed should be aligned.
Uhp 600 Graphite Electrode with premium quality, competitive price, top manufacturer in China, adequate stocks.
Graphite Electrodes mainly use needle coke, petroleum coke, as raw material, coal pitch as binder, calcination, ingredients, kneading, molding, baking and graphitization, machining and made, which is released in electric arc furnace in the form of arc conductor of electricity to heat melting furnace charge, Graphite Electrode with low resistivity, graphite electrode good conductivity, graphite electrode low ash, graphite electrode uniform and compact structure, good oxidation resistance, high mechanical strength, etc.
Uhp 600 Graphite Electrode,Price Uhp Graphite Electrode,Uhp Graphite Electrode With Nipples,Graphite Electrode For Steel Plant
Carbographite Industrial PTE.LTD , https://www.carbographite.com