However, autumn and winter celery seedlings are in the high temperature season from June to August. Because of the high temperature (generally 30--40 °C), strong sunshine and easy to suffer from drought, it is necessary to adopt measures such as shading, cooling and moisturizing. The cost is higher and the effect is not very good. To this end, it will be changed to a high-altitude region with cool climate and humid air. After autumn, it will be transported to low mountains for transplanting. Because of the suitable nursery environment, celery not only has quick emergence, strong growth, less pests and diseases, but also cultivated celery seedlings. Very robust and the cost of seedlings is also significantly reduced.
The specific method is as follows: in the mountains above 800 meters above sea level, the transportation is convenient, the soil is moist and fertile, the weeds are less, the water source is guaranteed, and the management is convenient. The ploughing and fertilizing, the grass roots are selected and the raft is 1.5 meters wide. The kneading surface is poured with clear water. After the water is completely infiltrated, the celery seed which has been soaked and germinated and thrushed is mixed with fine soil evenly on the kneading surface, and the seed is tightly covered with sieved fine soil, and then a layer of reed leaves is covered. Or other branches, to ensure that there is a flower sun on the face. If there is pest, you can use the crystal trichlorfon to stir the fragrant wheat bran and smash it on the noodles and around. After the celery seedlings, the glutinous coverings are gradually removed in time, paying attention to the water spray to keep the glutinous surface moist. About 20 days after emergence, the first inter-emergence seedlings were combined, and the weeding seedlings were once every 7-10 days, and the grass surface was kept without grass and the seedlings were evenly spaced. After the three-leaf stage of seedlings, the topdressing is started with decomposed thin manure water, and the topdressing is performed every 5-7 days. Pay attention to proper control of water and fertilizer supply before transplanting seedlings, and promote seedling growth and robustness. When transplanting, the seedlings should be pulled up as much as possible, and they are neatly discharged into the carton with vent holes, and quickly transported to low mountains for planting.
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