After the cuttings are collected, they should be stored in the ditch in time. Before entering the ditch, they should be soaked in 100 times the new high-fat membrane to avoid mold deterioration during storage, moisture evaporation, infection prevention, freeze-resistance, and germination.
The storage ditch should be selected where the terrain is high, the drainage is good, the groundwater level is low and the shade is cloudy. The ditch is 1 meter deep and 1 to 1.5 meters wide. The ditch length depends on the number of cuttings, usually 10 meters. After the ditch is dug, a layer of 10 cm thick clean wet sand is laid on the bottom of the ditch. The cuttings are bundled in a sequence of one bale and one bale, and the bales are separated from the bale by fine sand. After laying a layer of cuttings, a layer of 10 cm thick wet sand is laid and the gaps in the cuttings are fully filled to prevent lyophilization. Usually put 2 to 3 layers on the line. Another way is to put the cuttings obliquely in the ditch. The cuttings are also filled with wet sand. Finally in the rows of soil covered 20 to 30 cm, sprayed 800 times the new high-fat film can protect the water vaporization, evaporation, sun drought, insulation, antifreeze, anti-soil compaction, suffocation and isolation of pests and diseases. The roof of the trench is ridged to facilitate cold protection.
The temperature in the ditch should be maintained at about 1°C, and it must not be higher than 5°C or lower than -1°C. The sandy soil of cuttings should be kept at a humidity of 70%~80%, that is, it should be suitable for hand-grouped and loose-wounded groups. When the temperature of the ditch is close to 7 to 8°C, when the cuttings have a fever phenomenon, the ditch should be turned back in time to thin the cover soil. When it is too dry, it can be sprayed with an appropriate amount of fresh water.